Celestial Atlas
(NGC 550 - 499) ←     NGC Objects: NGC 500 - 549 Link for sharing this page on Facebook     → (NGC 550 - 599)
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500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516,
517, 518, 519, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532, 533,
534, 535, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546, 547, 548, 549

Page last updated April 11, 2016
Checked Corwin positions, original NGC entries
WORKING 500: Update Steinicke data, add/update historical/physical data

NGC 500 (= PGC 5013)
Discovered (Dec 6, 1850) by
Bindon Stoney
A magnitude 14.2 lenticular galaxy (type E/S0?) in Pisces (RA 01 22 39.4, Dec +05 23 14)
Historical Identification: Per Dreyer, NGC 500 (= GC 290, 3rd Lord Rosse, 1860 RA 01 15 23, NPD 85 20.3) is "very faint, very small, much brighter middle, 11th magnitude star 1 arcmin to northeast".
Discovery Notes: Although Dreyer credits the discovery to William Parsons, 3rd Earl of Rosse, he notes that many of Rosse's nebular discoveries were actually made by one of his assistants, in this case Bindon Stoney.
Physical Information: Based on a recessional velocity of 12315 km/sec, a straightforward calculation indicates that NGC 500 is about 575 million light years away. But for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 545 million light years away when the light by which we see it was emitted, about 560 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of 0.8 by 0.6 arcmin, NGC 500 is about 125 thousand light years across.
SDSS image of region near lenticular galaxy NGC 500
Above, a 12 arcmin wide SDSS image centered on NGC 500
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 500

NGC 501 (= PGC 5082)
Discovered (Oct 28, 1856) by
R. J. Mitchell
A magnitude 14.5 elliptical galaxy (type E0?) in Pisces (RA 01 23 22.4, Dec +33 25 59)
Historical Identification: Per Dreyer, NGC 501(= GC 284, 3rd Lord Rosse, 1860 RA 01 15 33, NPD 57 17.7) is "very faint, small (E in Birr diagram)".
Discovery Notes: Although Dreyer credits the discovery to William Parsons, 3rd Earl of Rosse, he notes that many of Rosse's nebular discoveries were actually made by one of his assistants, in this case R. J. Mitchell.
Physical Information: Apparent size 0.5 by 0.5 arcmin?
SDSS image of region near elliptical galaxy NGC 501, also showing NGC 495, NGC 498, NGC 499 and NGC 510, and part of NGC 496, NGC 503 and IC 1684
Above, a 12 arcmin wide SDSS image centered on NGC 501
Also shown are NGC 495, 498, 499, 510, and part of NGC 496, NGC 503 and IC 1684
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of elliptical galaxy NGC 501

NGC 502 (= PGC 5034)
Discovered (Sep 25, 1862) by
Heinrich d'Arrest
A magnitude 12.8 lenticular galaxy (type SA0(r)?) in Pisces (RA 01 22 55.6, Dec +09 02 57)
Historical Identification: Per Dreyer, NGC 502 (= GC 293, d'Arrest, 1860 RA 01 15 36, NPD 81 41.0) is "considerably bright, small, round, brighter middle and nucleus".
Physical Information: Apparent size 1.1 by 1.0 arcmin?
SDSS image of region near lenticular galaxy NGC 502
Above, a 12 arcmin wide SDSS image centered on NGC 502
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 502

NGC 503 (= PGC 5086)
Discovered (Aug 13, 1863) by
Heinrich d'Arrest
A magnitude 14.1 lenticular galaxy (type E/S0?) in Pisces (RA 01 23 28.4, Dec +33 19 54)
Historical Identification: Per Dreyer, NGC 503 (= GC 5169, d'Arrest, 1860 RA 01 15 37, NPD 57 24.2) is "extremely faint, extremely small, double star 4 arcmin to southwest".
Physical Information: Apparent size 0.9 by 0.7 arcmin?
SDSS image of region near lenticular galaxy NGC 503, also showing NGC 501, NGC 507, NGC 508, NGC 510 and IC 1687; also shown is the star listed as NGC 506
Above, a 12 arcmin wide SDSS image centered on NGC 503
(also shown are NGC 501, 506, 507, 508 and 510, IC 1687, and 8th magnitude star HD 8347)
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 503

NGC 504 (= PGC 5084)
Discovered (Nov 22, 1827) by
John Herschel
Also observed (date?) by Heinrich d'Arrest
A magnitude 13.0 lenticular galaxy (type S0?) in Pisces (RA 01 23 27.9, Dec +33 12 16)
Historical Identification: Per Dreyer, NGC 504 (= GC 291 = GC 292 = JH 107, d'Arrest, 1860 RA 01 15 37, NPD 57 31.7) is "very faint, small".
Physical Information: Apparent size 1.7 by 0.4 arcmin?
SDSS image of region near lenticular galaxy NGC 504, also showing NGC 507, NGC 508 and IC 1687, and part of NGC 494; also shown is the star listed as NGC 506
Above, a 12 arcmin wide SDSS image centered on NGC 504
(also shown are NGC 494, 506, 507 and 508, and IC 1687)
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 504

NGC 505 (= PGC 5036)
Discovered (Oct 1, 1864) by
Albert Marth
A magnitude 13.8 lenticular galaxy (type S0?) in Pisces (RA 01 22 57.1, Dec +09 28 08)
Historical Identification: Per Dreyer, NGC 505 (= GC 5170, Marth #46, 1860 RA 01 15 37, NPD 81 16) is "very faint, very small, stellar".
Physical Information: Apparent size 0.9 by 0.6 arcmin?
SDSS image of region near lenticular galaxy NGC 505
Above, a 12 arcmin wide SDSS image centered on NGC 505
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 505

NGC 506
Recorded (Nov 7, 1874) by
Lawrence Parsons, 4th Earl of Rosse
A magnitude 14.9 star in Pisces (RA 01 23 35.3, Dec +33 14 40)
Historical Identification: Per Dreyer, NGC 506 (= GC 5171, 4th Lord Rosse, 1860 RA 01 15 47, NPD 57 29.8) is "very faint, very small, southwest of h 108", (JH) 108 being NGC 507.
SDSS image of region near the star listed as NGC 506, also showing NGC 504, NGC 507 and NGC 508
Above, a 6 arcmin wide SDSS image centered on the star listed as NGC 506
also shown are NGC 504, 508 and 507 (which see for wider images)

NGC 507 (= PGC 5098 =
Arp 229)
Discovered (Sep 12, 1784) by William Herschel
Also observed (date?) by John Herschel
A magnitude 11.2 lenticular galaxy (type SA0(r)?) in Pisces (RA 01 23 39.9, Dec +33 15 22)
Historical Identification: Per Dreyer, NGC 507 (= GC 294 = JH 108 = WH III 159, 1860 RA 01 15 49, NPD 57 28.6) is "very faint, pretty large, round, brighter middle, southern of 2", the other being NGC 508.
Physical Information: Apparent size 3.0 by 2.5 arcmin. Recessional velocity 4935 km/sec. Thought to be a group member with NGC 508, but not necessarily a physical pair, as there is no evidence of interaction between the galaxies. Used by the Arp Atlas as an example of a galaxy with concentric rings.
SDSS image of region near lenticular galaxy NGC 507 (also known as Arp 229), also showing NGC 503, NGC 504, NGC 506, NGC 508 and IC 1687
Above, a 12 arcmin wide SDSS image centered on NGC 507
Also shown are NGC 503, 504, 506, 508, IC 1687, and 8th magnitude star HD 8347
Below, a 4 arcmin wide SDSS image of the galaxy, also showing NGC 508 and the star listed as NGC 506
SDSS image of lenticular galaxy NGC 507 (also known as Arp 229), also showing NGC 508 and the star listed as NGC 506

NGC 508 (= PGC 5099, but not part of
Arp 229)
Discovered (Sep 12, 1784) by William Herschel
A magnitude 13.1 elliptical galaxy (type E0?) in Pisces (RA 01 23 40.6, Dec +33 16 50)
Historical Identification: Per Dreyer, NGC 508 (= GC 295 = JH 109 = WH III 160, 1860 RA 01 15 49, NPD 57 27.0) is "very faint, small, northern of 2".
Physical Information: Apparent size 1.1 by 1.1 arcmin? Recessional velocity 5525 km/sec. Thought to be a group member with NGC 507 (which see for images), but not necessarily a physical pair, as there is no evidence of interaction between the galaxies. Generally treated as part of Arp 229, which is an example of a galaxy with concentric rings, but that description and Arp's comment about the entry apply only to NGC 507, so the term "Arp 229" should also be applied only to the larger galaxy.

NGC 509 (= PGC 5080)
Discovered (Oct 1, 1864) by
Albert Marth (#47)
A magnitude 13.4 lenticular galaxy (type SB0/a?) in Pisces (RA 01 23 24.1, Dec +09 26 01)
Historical Identification: Per Dreyer, NGC 509 (= GC 5172, Marth #47, 1860 RA 01 16 03, NPD 81 18) is "very faint, small, extended".
Physical Information: Apparent size 1.6 by 0.6 arcmin?
SDSS image of region near lenticular galaxy NGC 509
Above, a 12 arcmin wide SDSS image centered on NGC 509
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 509

NGC 510
Recorded (Nov 11, 1867) by
Herman Schultz
A pair of magnitude 14.9 and 15.1 stars in Pisces (RA 01 23 55.6, Dec +33 29 48)
Historical Identification: Per Dreyer, NGC 510 (= GC 5173, Schultz (Nova V), 1860 RA 01 16 04, NPD 57 14.1) is "very faint, very small, a little extended".
SDSS image of region near the pair of stars listed as NGC 510
Above, a 12 arcmin wide SDSS image centered on the pair of stars listed as NGC 510

NGC 511 (= PGC 5103)
Discovered (Oct 26, 1876) by
Édouard Stephan
A magnitude 13.7 lenticular galaxy (type S0(r)?) in Pisces (RA 01 23 30.7, Dec +11 17 28)
Historical Identification: Per Dreyer, NGC 511 (= GC 5174, Stephan list VIII (#4), 1860 RA 01 16 08, NPD 79 26.5) is "extremely faint, very small, small (faint) star involved, small star attached".
Physical Information: Apparent size 1.0 by 0.9 arcmin. Contains multiple concentric rings.
SDSS image of region near lenticular galaxy NGC 511
Above, a 12 arcmin wide SDSS image centered on NGC 511
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 511

NGC 512 (= PGC 5132)
Discovered (Nov 17, 1827) by
John Herschel
A magnitude 13.2 spiral galaxy (type Sab?) in Andromeda (RA 01 23 59.7, Dec +33 54 28)
Historical Identification: Per Dreyer, NGC 512 (= GC 296 = JH 110, 1860 RA 01 16 08, NPD 56 49.9) is "very faint, very small".
Physical Information: Apparent size 1.6 by 0.4 arcmin?
SDSS image of region near spiral galaxy NGC 512
Above, a 12 arcmin wide SDSS image centered on NGC 512
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 512

NGC 513 (= PGC 5174)
Discovered (Sep 13, 1784) by
William Herschel
Also observed (date?) by John Herschel
A magnitude 13.0 spiral galaxy (type Sc? pec) in Andromeda (RA 01 24 26.8, Dec +33 47 58)
Historical Identification: Per Dreyer, NGC 513 (= GC 297 = JH 111 = WH III 169, 1860 RA 01 16 34, NPD 56 56.5) is "faint, small, stellar".
Physical Information: Apparent size 0.9 by 0.6 arcmin? A Seyfert galaxy (type Sy 1h).
SDSS image of region near spiral galaxy NGC 513
Above, a 12 arcmin wide SDSS image centered on NGC 513
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 513

NGC 514 (= PGC 5139)
Discovered (Oct 16, 1784) by
William Herschel
Also observed (date?) by John Herschel
A magnitude 11.7 spiral galaxy (type SAB(rs)c?) in Pisces (RA 01 24 03.9, Dec +12 55 03)
Historical Identification: Per Dreyer, NGC 514 (= GC 298 = JH 112 = WH II 252, 1860 RA 01 16 36, NPD 77 49.2) is "faint, large, a little extended, very gradually a little brighter middle, double star to east".
Physical Information: Apparent size 3.7 by 3.0 arcmin?
SDSS image of region near spiral galaxy NGC 514
Above, a 12 arcmin wide SDSS image centered on NGC 514
Below, a 4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 514

NGC 515 (= PGC 5201)
Discovered (Sep 13, 1784) by
William Herschel
Also observed (date?) by John Herschel
A magnitude 13.0 lenticular galaxy (type SB0?) in Pisces (RA 01 24 38.5, Dec +33 28 22)
Historical Identification: Per Dreyer, NGC 515 (= GC 299 = JH 113 = WH III 167, 1860 RA 01 16 46, NPD 57 15.5) is "pretty faint, very small, round, northwestern of 2", the other being NGC 517.
Physical Information: Apparent size 1.4 by 1.1 arcmin?
SDSS image of region near lenticular galaxy NGC 515, also showing NGC 517
Above, a 12 arcmin wide SDSS image centered on NGC 515, also showing NGC 517
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 515

NGC 516 (= PGC 5148)
Discovered (Sep 25, 1862) by
Heinrich d'Arrest
A magnitude 13.1 lenticular galaxy (type SB0/a?) in Pisces (RA 01 24 08.1, Dec +09 33 06)
Historical Identification: Per Dreyer, NGC 516 (= GC 300, d'Arrest, 1860 RA 01 16 48, NPD 81 10.1) is "extremely faint, small, very difficult, I 151 forty-one seconds of time to east", (WH) I 151 being NGC 524.
Physical Information: Apparent size 1.4 by 0.5 arcmin?
SDSS image of region near lenticular galaxy NGC 516
Above, a 12 arcmin wide SDSS image centered on NGC 516
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 516

NGC 517 (= PGC 5214)
Discovered (Sep 13, 1784) by
William Herschel
Also observed (date?) by John Herschel
A magnitude 12.5 lenticular galaxy (type S0?) in Pisces (RA 01 24 43.8, Dec +33 25 47)
Historical Identification: Per Dreyer, NGC 517 (= GC 301 = JH 114 = WH III 168, 1860 RA 01 16 52, NPD 57 18.1) is "pretty faint, round, stellar, southeastern of 2", the other being NGC 515.
Physical Information: Apparent size 1.4 by 0.5 arcmin?
SDSS image of region near lenticular galaxy NGC 517, also showing NGC 515
Above, a 12 arcmin wide SDSS image centered on NGC 517, also showing NGC 515
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 517

NGC 518 (= PGC 5161)
Discovered (Dec 17, 1864) by
Albert Marth
A magnitude 13.3 spiral galaxy (type Sa?) in Pisces (RA 01 24 17.6, Dec +09 19 52)
Historical Identification: Per Dreyer, NGC 518 (= GC 5175, Marth #48, 1860 RA 01 16 57, NPD 81 25) is "faint, very small, round".
Physical Information: Apparent size 1.6 by 0.6 arcmin?
SDSS image of region near spiral galaxy NGC 518
Above, a 12 arcmin wide SDSS image centered on NGC 518
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 518

NGC 519 (= PGC 5182)
Discovered (Nov 20, 1886) by
Lewis Swift
A magnitude 14.3 elliptical galaxy (type E4?) in Cetus (RA 01 24 28.6, Dec -01 38 28)
Historical Identification: Per Dreyer, NGC 519 (Swift list VI (#8), 1860 RA 01 17 14, NPD 92 23.7) is "most extremely faint, very small, round, very difficult".
Physical Information: Apparent size 0.5 by 0.3 arcmin?
SDSS image of region near elliptical galaxy NGC 519, also showing NGC 530 and IC 1696
Above, a 12 arcmin wide SDSS image centered on NGC 519, also showing NGC 530 and IC 1696
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of elliptical galaxy NGC 519

NGC 520 (= PGC 5193 =
Arp 157)
Discovered (Dec 13, 1784) by William Herschel
Also observed (date?) by John Herschel
A magnitude 11.4 spiral galaxy (type Sa? pec) in Pisces (RA 01 24 34.9, Dec +03 47 30)
Historical Identification: Per Dreyer, NGC 520 (= GC 303 = JH 116 = WH III 253, 1860 RA 01 17 19, NPD 86 56.1) is "faint, considerably large, extended 137°".
Physical Information: Apparent size 3.4 by 1.7 arcmin? A pair of colliding galaxies. Used by the Arp Atlas as an example of a disturbed galaxy with interior absorption.
SDSS image of region near peculiar spiral galaxy NGC 520, also known as Arp 157
Above, a 12 arcmin wide SDSS image centered on NGC 520
Below, a 4 arcmin wide SDSS image of the pair of interacting galaxies
SDSS image of peculiar spiral galaxy NGC 520, also known as Arp 157
Below, the image above with a HST image overlaid on central region (Image credit as for following image)
Composite of HST and SDSS images of peculiar spiral galaxy NGC 520, also known as Arp 157
Below, a ? arcmin wide HST image of the central portion of the galaxy (North on upper left)
(Image Credit NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and B. Whitmore (STScI)NASA)
HST closeup of a portion of the peculiar spiral galaxy NGC 520, also known as Arp 157, rotated to allow a more detailed view

NGC 521 (= PGC 5190)
Discovered (Oct 8, 1785) by
William Herschel
Also observed (date?) by John Herschel
A magnitude 11.7 spiral galaxy (type SB(r)bc?) in Cetus (RA 01 24 33.8, Dec +01 43 53)
Historical Identification: Per Dreyer, NGC 521 (= GC 304 = JH 115 = WH II 461, 1860 RA 01 17 21, NPD 89 00.0) is "faint, pretty large, round, gradually brighter middle".
Physical Information: Apparent size 2.7 by 2.4 arcmin?
SDSS image of region near spiral galaxy NGC 521
Above, a 12 arcmin wide SDSS image centered on NGC 521
Below, a 3 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 521

NGC 522 (= PGC 5218)
Discovered (Sep 25, 1862) by
Heinrich d'Arrest
A magnitude 12.9 spiral galaxy (type Sbc?) in Pisces (RA 01 24 45.9, Dec +09 59 41)
Historical Identification: Per Dreyer, NGC 522 (= GC 305, d'Arrest, 1860 RA 01 17 23, NPD 80 44.4) is "extremely faint, pretty large, irregular figure, perhaps cluster plus nebula".
Physical Information: Apparent size 2.8 by 0.5 arcmin?
SDSS image of region near spiral galaxy NGC 522
Above, a 12 arcmin wide SDSS image centered on NGC 522
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 522

NGC 523 (=
NGC 537 = PGC 5268 = Arp 158)
Discovered (Sep 13, 1784) by William Herschel (and later listed as NGC 537)
Discovered (Aug 23, 1862) by Heinrich d'Arrest (and later listed as NGC 523)
A magnitude 12.7 spiral galaxy (type Sbc? pec) in Andromeda (RA 01 25 20.8, Dec +34 01 30)
Historical Identification: Per Dreyer, NGC 523 (= GC 306 = WH III 170?, d'Arrest, 1860 RA 01 17 25, NPD 56 42.4) is "a double nebula, very faint, very small, position angle 90°, distance 30 arcsec", the question mark after (WH) III 170 being a suggestion that this might be a duplicate of NGC 537 (which turned out to be correct).
Physical Information: Apparent size 2.5 by 0.7 arcmin? Used by the Arp Atlas as an example of a disturbed galaxy with interior absorption. Probably the result of a collision between two galaxies, its "double" appearance being due to their two nuclei, and most likely destined to merge into a single galaxy.
SDSS image of region near peculiar spiral galaxy NGC 523, also known as Arp 158
Above, a 12 arcmin wide SDSS image centered on NGC 523
Below, a 3 arcmin wide SDSS image of the galaxy
SDSS image of peculiar spiral galaxy NGC 523, also known as Arp 158

NGC 524 (= PGC 5222)
Discovered (Sep 4, 1786) by
William Herschel
Also observed (date?) by John Herschel
A magnitude 10.2 lenticular galaxy (type SA0/a(rs)?) in Pisces (RA 01 24 47.8, Dec +09 32 20)
Historical Identification: Per Dreyer, NGC 524 (= GC 307 = JH 117 = WH I 151, 1860 RA 01 17 27, NPD 81 11.6) is "very bright, pretty large, much brighter middle, 4 small (faint) stars near".
Physical Information: Apparent size 4.2 by 4.0 arcmin.
SDSS image of region near lenticular galaxy NGC 524
Above, a 12 arcmin wide SDSS image centered on NGC 524
Below, a 5 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 524

NGC 525 (= PGC 5232)
Discovered (Sep 25, 1862) by
Heinrich d'Arrest
A magnitude 13.3 lenticular galaxy (type S0/a?) in Pisces (RA 01 24 52.9, Dec +09 42 12)
Historical Identification: Per Dreyer, NGC 525 (= GC 308, d'Arrest, 1860 RA 01 17 32, NPD 81 01.7) is "very faint, very small, 11th or 12th magnitude star 5 seconds of time to west".
Physical Information: Apparent size 1.5 by 0.7 arcmin?
SDSS image of region near lenticular galaxy NGC 525
Above, a 12 arcmin wide SDSS image centered on NGC 525
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 525

WORKING HERE

NGC 526 (= PGC 5120 + PC 5135)
Discovered (Sep 1, 1834) by
John Herschel
An interacting pair of lenticular galaxies in Sculptor
PGC 5120 = A 13th magnitude galaxy (type S0??) at RA 01 23 54.4, Dec -35 03 56
PGC 5135 = A 13th magnitude galaxy (type S0??) at RA 01 23 56.7, Dec -35 04 09
Historical Identification: Per Dreyer, NGC 526 (= GC 309 = JH 2408, 1860 RA 01 17 35, NPD 125 48.1) is "faint, small, a little extended, the preceding (western) of 2", the other being NGC 527.
Physical Information: The description "a little extended" is probably due to NGC 526 consisting of two galaxies, as listed above: 1.2 by 0.6 arcmin wide PGC 5120, and 0.8 by 0.4 arcmin wide PGC 5135. The DSS image suggests and the HST image shows that the galaxies are almost certainly a physically interacting pair.
DSS image of region near the pair of lenticular galaxies listed as NGC 526, also showing NGC 527 and its companion, PGC 5142
Above, a 12 arcmin wide DSS image centered on NGC 526, also showing NGC 527 and its companion
Below, a 2.4 arcmin wide DSS image of the interacting pair of galaxies comprising NGC 526
DSS image of the pair of lenticular galaxies listed as NGC 526
Below, a ? arcmin wide HST image of part of the pair (Image Credit Hubble Legacy Archive)
Raw HST image of the pair of lenticular galaxies listed as NGC 526

NGC 527 (= PGC 5128 = PGC 5141)
Discovered (Sep 1, 1834) by
John Herschel
A 13th magnitude lenticular galaxy (type SB(r)0/a?) in Sculptor (RA 01 23 58.2, Dec -35 06 54)
Historical Identification: Per Dreyer, NGC 527 (= GC 310 = JH 2409, 1860 RA 01 17 38, NPD 125 51.0) is "faint, small, a little extended, brighter middle, the following (eastern) of 2", the other being NGC 526.
Physical Information: Apparent size 1.6 by 0.3 arcmin. Recessional velocity 5800 km/sec. (PGC 5142 is too faint to be considered part of NGC 527, but it is a companion of NGC 527 and sometimes called NGC 527B, so it is discussed immediately below.)
DSS image of region near lenticular galaxy NGC 527 and its spiral companion, PGC 5142, also showing NGC 526
Above, a 12 arcmin wide DSS image centered on NGC 527, also showing NGC 526 and PGC 5142
Below, a 2.4 arcmin wide DSS image of the galaxy and its companion
DSS image of lenticular galaxy NGC 527 and its spiral companion, PGC 5142

PGC 5142 (= "NGC 527B")
Not an NGC object but listed here since sometimes called NGC 527B
A 14th magnitude spiral galaxy (type S?) in
Sculptor (RA 01 23 59.1, Dec -35 07 41)
Physical Information: Apparent size 0.6 by 0.2 arcmin?? Recessional velocity 5880 km/sec. A companion of NGC 527, which see for images.

NGC 528 (= PGC 5290)
Discovered (Aug 22, 1865) by
Heinrich d'Arrest
A 13th magnitude lenticular galaxy (type S0??) in Andromeda (RA 01 25 33.6, Dec +33 40 17)
Historical Identification: Per Dreyer, NGC 528 (= GC 5176, d'Arrest, 1860 RA 01 17 41, NPD 57 03.7) is "faint, pretty large, round, a little brighter middle".
Physical Information: Apparent size 1.2 by 0.8 arcmin?
SDSS image of region near lenticular galaxy NGC 528
Above, a 12 arcmin wide SDSS image centered on NGC 528
Below, a 2 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 528

NGC 529 (= PGC 5299), part of Hickson Compact Group 10
Discovered (Nov 17, 1827) by
John Herschel
A 12th magnitude lenticular galaxy (type E/S0) in Andromeda (RA 01 25 40.3, Dec +34 42 47)
Historical Identification: Per Dreyer, NGC 529 (= GC 311 = JH 118, 1860 RA 01 17 46, NPD 56 01.0) is "pretty bright, very small, suddenly brighter middle, western of 2", the other being NGC 536.
Physical Information: Apparent size 2.4 by 2.1 arcmin. A member of Hickson Compact Group 10, consisting of NGC 529, 531, 536 (which see for additional images) and 542.
SDSS image of region near lenticular galaxy NGC 529
Above, a 12 arcmin wide SDSS image centered on NGC 529
Below, a 3 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 529

NGC 530 (=
IC 106 = PGC 5210 = PGC 73947)
Discovered (Nov 20, 1886) by Lewis Swift (and later listed as NGC 530)
Discovered (Nov 16, 1887) by Guillaume Bigourdan (and later listed as IC 106)
Also observed (date?) by Herbert Howe (while listed as NGC 530 and IC 106)
A 13th magnitude lenticular galaxy (type SB0+??) in Cetus (RA 01 24 41.7, Dec -01 35 14)
Historical Identification: Per Dreyer, NGC 530 (Swift list VI (#9), 1860 RA 01 17 49, NPD 92 19.4) is "extremely faint, small, much extended, faint star to southeast". The second Index Catalog lists a corrected 1860 RA (per Howe) of 01 17 34 and notes "Is = IC 106" (which see for a discussion of the double listing).
Physical Information: Part of galaxy cluster Abell 194. Based on a recessional velocity of 5005 km/sec, NGC 530 is about 235 million light years away. Given that and its apparent size of 1.5 by 0.4 arcmin, it is about 100 thousand light years across.
SDSS image of region near lenticular galaxy NGC 530, also showing NGC 519 and IC 1696
Above, a 12 arcmin wide SDSS image centered on NGC 530, also showing NGC 519 and IC 1696
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 530

NGC 531 (= PGC 5340), part of Hickson Compact Group 10
Discovered (Oct 16, 1855) by
R. J. Mitchell
A 14th magnitude lenticular galaxy (type SB0/a) in Andromeda (RA 01 26 18.8, Dec +34 45 15)
Historical Identification: Per Dreyer, NGC 531 (= GC 312, 3rd Lord Rosse, 1860 RA 01 17 55, NPD 55 58.4) is "faint, small, round".
Discovery Notes: Although Dreyer credits the discovery to William Parsons, 3rd Earl of Rosse, he notes that many of Rosse's nebular discoveries were actually made by one of his assistants, in this case R. J. Mitchell.
Physical Information: Apparent size 1.8 by 0.5 arcmin. A member of Hickson Compact Group 10, consisting of NGC 531, 529, 536 (which see for additional images) and 542.
SDSS image of region near lenticular galaxy NGC 531, also showing NGC 536 and NGC 542
Above, a 12 arcmin wide SDSS image centered on NGC 531, also showing NGC 536 and 542
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 531

NGC 532 (= PGC 5264)
Discovered (Sep 4, 1786) by
William Herschel
Also observed (date?) by John Herschel
A 13th magnitude spiral galaxy (type Sab??) in Pisces (RA 01 25 17.3, Dec +09 15 51)
Historical Identification: Per Dreyer, NGC 532 (= GC 313 = GC 314 = JH 119 = WH III 556, 1860 RA 01 17 59, NPD 81 28.0) is "very faint, pretty large, extended 30°, brighter middle".
Physical Information: Apparent size 3.1 by 1.0 arcmin?
SDSS image of region near spiral galaxy NGC 532
Above, a 12 arcmin wide SDSS image centered on NGC 532
Below, a 3 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 532

NGC 533 (= PGC 5283)
Discovered (Oct 8, 1785) by
William Herschel
Also observed (date?) by John Herschel
An 11th magnitude elliptical galaxy (type E3??) in Cetus (RA 01 25 31.4, Dec +01 45 33)
Historical Identification: Per Dreyer, NGC 533 (= GC 315 = JH 121 = WH II 462, 1860 RA 01 18 19, NPD 88 58.2) is "pretty bright, pretty large, round, gradually brighter middle".
Physical Information: Apparent size 3.8 by 2.3 arcmin?
SDSS image of region near elliptical galaxy NGC 533
Above, a 12 arcmin wide SDSS image centered on NGC 533
Below, a 4.8 arcmin wide SDSS image of the galaxy
SDSS image of elliptical galaxy NGC 533

NGC 534 (= PGC 5215)
Discovered (Oct 23, 1835) by
John Herschel
A 13th magnitude lenticular galaxy (type SB0??) in Sculptor (RA 01 24 44.6, Dec -38 07 45)
Historical Identification: Per Dreyer, NGC 534 (= GC 316 = JH 2410, 1860 RA 01 18 23, NPD 128 52.2) is "most extremely faint, small, round, very gradually brighter middle, 1st of 4", the others being NGC 544, 546 and 549.
Physical Information: Apparent size 1.0 by 0.9 arcmin?
DSS image of region near lenticular galaxy NGC 534, also showing NGC 544 and NGC 546
Above, a 12 arcmin wide DSS image centered on NGC 534, also showing NGC 544 and 546
Below, a 1.8 arcmin wide DSS image of the galaxy
DSS image of lenticular galaxy NGC 534

NGC 535 (= PGC 5282)
Discovered (Oct 31, 1864) by
Heinrich d'Arrest
A 14th magnitude lenticular galaxy (type S0/a) in Cetus (RA 01 25 31.1, Dec -01 24 29)
Historical Identification: Per Dreyer, NGC 535 (= GC 5177, d'Arrest, 1860 RA 01 18 23, NPD 92 07.8) is "very faint, very small, 1st of 3"; which the other 2 of 3 are is not specified by Dreyer, but based on their position and their discovery by d'Arrest, they are probably NGC 541 and 543.
Physical Information: Apparent size 1.0 by 0.3 arcmin.
SDSS image of region near lenticular galaxy NGC 535, also showing NGC 541
Above, a 12 arcmin wide SDSS image centered on NGC 535, also showing NGC 541
Below, a 1.2 arcmin wide DSS image of the galaxy
DSS image of lenticular galaxy NGC 535

NGC 536 (= PGC 5344), part of Hickson Compact Group 10
Discovered (Sep 13, 1784) by
William Herschel
Also observed (date?) by John Herschel
A 12th magnitude spiral galaxy (type SB(r)b) in Andromeda (RA 01 26 21.8, Dec +34 42 11)
Historical Identification: Per Dreyer, NGC 536 (= GC 317 = GC 325 = JH 120 = WH III 171, 1860 RA 01 18 27, NPD 56 01.4) is "pretty bright, pretty large, gradually brighter middle, eastern of 2", the other being NGC 529.
Physical Information: Apparent size 3.3 by 1.2 arcmin. A member of Hickson Compact Group 10, consisting of NGC 536, 529, 531 and 542.
SDSS image of region near spiral galaxy NGC 536, also showing NGC 531 and NGC 542
Below, a 12 arcmin SDSS image centered on NGC 536, also showing NGC 531 and 542
Below, a 3.6 arcmin wide SDSS image of NGC 536, also showing part of NGC 542
SDSS image of spiral galaxy NGC 536, also showing part of NGC 542
Below, a ? arcmin wide image of Hickson Compact Group 10, consisting of NGC 536, 529, 531 and 542
(Image Credit Gary White and Verlenne Monroe/Adam Block/NOAO/AURA/NSF); north on right, east on top
NOAO image of Hickson Compact Group 10, consisting of NGC 529, NGC 531, NGC 536 and NGC 542, with North at the right to show more detail

NGC 537 (=
NGC 523 = PGC 5268 = Arp 158)
Discovered (Sep 13, 1784) by William Herschel (and later listed as NGC 537)
Discovered (Aug 23, 1862) by Heinrich d'Arrest (and later listed as NGC 523)
A magnitude 12.7 spiral galaxy (type Sbc? pec) in Andromeda (RA 01 25 20.8, Dec +34 01 30)
Historical Identification: Per Dreyer, NGC 537 (= GC 319 = WH III 170, 1860 RA 01 18 27, NPD 56 39.1) is "stellar (perhaps = GC 306?)", GC 306 being NGC 523, so Dreyer's suggestion of the duplicate entry turned out to be correct.
Physical Information: Given the duplicate entry, see NGC 523 for anything else.

NGC 538 (= PGC 5275)
Discovered (Nov 20, 1886) by
Lewis Swift
A 14th magnitude spiral galaxy (type SB(s)ab) in Cetus (RA 01 25 26.1, Dec -01 33 02)
Historical Identification: Per Dreyer, NGC 538 (Swift list VI (#10), 1860 RA 01 18 29, NPD 92 16.4) is "extremely faint, small, much extended, faint star to north".
Physical Information: Apparent size 1.3 by 0.6 arcmin.
SDSS image of region near spiral galaxy NGC 538
Above, a 12 arcmin wide SDSS image centered on NGC 538
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 538

NGC 539 (=
NGC 563 = PGC 5269)
Discovered (Oct 31, 1885) by Francis Leavenworth (and later listed as NGC 539)
Discovered (1886) by Francis Leavenworth (and later listed as NGC 563)
A 14th magnitude spiral galaxy (type SB(rs)c?) in Cetus (RA 01 25 21.7, Dec -18 09 50)
Historical Identification: Per Dreyer, NGC 539 (Leavenworth list I (#28), 1860 RA 01 18 30, NPD 108 55.4) is "very faint, very small, round".
Physical Information: Apparent size 1.6 by 1.3 arcmin?
DSS image of region near spiral galaxy NGC 539
Above, a 12 arcmin wide DSS image centered on NGC 539
Below, a 2.4 arcmin wide DSS image of the galaxy
DSS image of spiral galaxy NGC 539

NGC 540 (= PGC 5410)
Discovered (Oct 15, 1885) by
Francis Leavenworth
A 15th magnitude lenticular galaxy (type SB0??) in Cetus (RA 01 27 08.9, Dec -20 02 12)
Historical Identification: Per Dreyer, NGC 540 (Leavenworth list I (#29), 1860 RA 01 18 30, NPD 110 41.4) is "very faint, very small, round, suddenly brighter middle and nucleus".
Physical Information: Apparent size 0.9 by 0.4 arcmin?
DSS image of region near lenticular galaxy NGC 540
Above, a 12 arcmin wide DSS image centered on NGC 540
Below, a 1.2 arcmin wide DSS image of the galaxy
DSS image of lenticular galaxy NGC 540

WORKING HERE

NGC 541 (= PGC 5305 =
Arp 133)
Discovered (Oct 30, 1864) by Heinrich d'Arrest
A magnitude 12.1 lenticular galaxy (type E/S0??) in Cetus (RA 01 25 44.3, Dec -01 22 46)
Historical Identification: Per Dreyer, NGC 541 (= GC 5178, d'Arrest, 1860 RA 01 18 36, NPD 92 06.1) is "faint, small, round, brighter middle". The position precesses to RA 01 25 44.3, Dec -01 22 18
Physical Information: Apparent size 1.9 by 1.4 arcmin (from image below) Used by the Arp Atlas of Peculiar Galaxies as an example of an elliptical or lenticular galaxy with nearby fragments.
SDSS image of region near lenticular galaxy NGC 541, also known as Arp 133, also showing NGC 535, NGC 541, NGC 545 and NGC 547
Above a 12 arcmin wide SDSS image centered on NGC 541, also showing NGC 535, 541, 545 and 547
Below, a 2.4 arcmin wide SDSS image of NGC 541
SDSS image of lenticular galaxy NGC 541, also known as Arp 133

NGC 542 (= PGC 5360), part of Hickson Compact Group 10
Discovered (Oct 16, 1855) by
R. J. Mitchell
A 15th magnitude spiral galaxy (type Sb??) in Andromeda (RA 01 26 30.8, Dec +34 40 31)
Historical Identification: Per Dreyer, NGC 542 (= GC 318, 3rd Lord Rosse, 1860 RA 01 18 38, NPD 56 03.3) is "extremely faint, difficult".
Discovery Notes: Although Dreyer credits the discovery to William Parsons, 3rd Earl of Rosse, he notes that many of Rosse's nebular discoveries were actually made by one of his assistants, in this case R. J. Mitchell.
Physical Information: Apparent size 1.0 by 0.2 arcmin? A member of Hickson Compact Group 10, consisting of NGC 542, 529, 531 and 536 (which see for more images).
SDSS image of spiral galaxy NGC 542, a member of Hickson Compact Group 10, with fellow group members NGC 531 and NGC 536
Above, a 12 arcmin wide SDSS image centered on NGC 542, also showing NGC 531 and 536
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 542, a member of Hickson Compact Group 10

NGC 543 (= PGC 5311)
Discovered (Oct 31, 1864) by
Heinrich d'Arrest
A 13th magnitude lenticular galaxy (type E/S0??) in Cetus (RA 01 25 50.0, Dec -01 17 34)
Historical Identification: Per Dreyer, NGC 543 (= GC 5179, d'Arrest, 1860 RA 01 18 42, NPD 92 01.8) is "extremely faint, extremely small".
Physical Information: Apparent size 0.6 by 0.3 arcmin?
SDSS image of lenticular galaxy NGC 543, also showing NGC 541, NGC 545, NGC 547 and NGC 548
Above, a 12 arcmin wide SDSS image centered on NGC 543, also showing NGC 541, 545, 547 and 548
Below, a 1.2 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 543

NGC 544 (= PGC 5253)
Discovered (Oct 23, 1835) by
John Herschel
A 13th magnitude lenticular galaxy (type E/SAB0?) in Sculptor (RA 01 25 12.0, Dec -38 05 40)
Historical Identification: Per Dreyer, NGC 544 (= GC 320 = JH 2411, 1860 RA 01 18 51, NPD 128 49.0) is "most extremely faint, small, round, very gradually brighter middle, 2nd of 4", the others being NGC 534, 546 and 549.
Physical Information: Apparent size 1.5 by 1.1 arcmin?
DSS image of region near lenticular galaxy NGC 544, also showing NGC 534, NGC 546 and NGC 549Above, a 12 arcmin wide DSS image centered on NGC 544, also showing NGC 534, 546 and 549
Below, a 1.8 arcmin wide DSS image of the galaxy
DSS image of lenticular galaxy NGC 544

WORKING HERE

NGC 545 (= PGC 5323, and with
NGC 547 = Arp 308)
Discovered (Oct 1, 1785) by William Herschel
A magnitude 12.2 lenticular galaxy (type E/SA0? pec) in Cetus (RA 01 25 59.1, Dec -01 20 25)
Historical Identification: Per Dreyer, NGC 545 (= GC 322 = WH II 448, 1860 RA 01 18 51, NPD 92 04.0) is "stellar, preceding (western) of double nebula", the other being NGC 547. The position precesses to RA 01 25 59.3, Dec -01 20 13,
Physical Information: Vr 5340 km/sec. 54.7 to 91.6 Mpc. Apparent size 3.65 by 1.55 arcmin (from images below). A double system with NGC 547, with which it is used by the Arp Atlas as an example of "Unclassified Objects" (most of which are galaxy pairs). Misidentified by MCG as NGC 547A.
SDSS image of region near lenticular galaxy NGC 545 and elliptical galaxy NGC 547, which comprise Arp 308, also showing NGC 541 and NGC 543
Above, a 12 arcmin wide SDSS image centered on NGC 545 and 547, also showing NGC 541 and 543
Below, a 4 arcmin wide SDSS image of Arp 308
SDSS image of lenticular galaxy NGC 545 and elliptical galaxy NGC 547, which comprise Arp 308

NGC 546 (= PGC 5255)
Discovered (Oct 23, 1835) by
John Herschel
A 14th magnitude spiral galaxy (type SB(s)b? pec) in Sculptor (RA 01 25 12.8, Dec -38 04 09)
Historical Identification: Per Dreyer, NGC 546 (= GC 321 = JH 2412, 1860 RA 01 18 52, NPD 128 47.3) is "most extremely faint, small, round, very gradually better middle, 3rd of 4", the others being NGC 534, 544 and 549.
Physical Information: Apparent size 1.4 by 0.5 arcmin?
DSS image of spiral galaxy NGC 546, also showing NGC 534, NGC 544 and NGC 549
Above, a 12 arcmin wide DSS image centered on NGC 546, also showing NGC 534, 544 and 549
Below, a 1.8 arcmin DSS image of the galaxy
DSS image of spiral galaxy NGC 546

WORKING HERE

NGC 547 (= PGC 5324, and with
NGC 545 = Arp 308)
Discovered (Oct 1, 1785) by William Herschel
A magnitude 12.2 elliptical galaxy (type E2?) in Cetus (RA 01 26 00.6, Dec -01 20 42)
Historical Identification: Per Dreyer, NGC 547 (= GC 323 = WH II 449, 1860 RA 01 18 53, NPD 92 04.3) is "stellar, following (eastern) of double nebula", the other being NGC 545. The position precesses to RA 01 26 01.3, Dec -01 20 31,
Physical Information: Vr 5470 km/sec. 44.4 to 84.7 Mpc. Apparent size 1.6 by 1.35 arcmin. A double system with NGC 545 (which see for images), with which it is used by the Arp Atlas as an example of "Unclassified Objects" (most of which are galaxy pairs). Per NED, misidentified as NGC 547B by MCG.

NGC 548 (= PGC 5326)
Discovered (Nov 2, 1867) by
George Searle
A 14th magnitude elliptical galaxy (type E4?) in Cetus (RA 01 26 02.5, Dec -01 13 32)
Historical Identification: Per Dreyer, NGC 548 (Searle (25, HN 33), 1860 RA 01 18 53, NPD 91 57.3) is "extremely faint, extremely small".
Physical Information: Apparent size 0.8 by 0.5 arcmin?
SDSS image of region near elliptical galaxy NGC 548, also showing NGC 543
Above, a 12 arcmin wide SDSS image centered on NGC 548, also showing NGC 543
Below, a 1.6 arcmin wide SDSS image of the galaxy
SDSS image of elliptical galaxy NGC 548

NGC 549 (= PGC 5243)
Discovered (Nov 29, 1837) by
John Herschel
A 15th magnitude spiral galaxy (type (R)SB(s)a?) in Sculptor (RA 01 25 07.1, Dec -38 00 28)
Historical Identification: Per Dreyer, NGC 549 (= GC 324 = JH 2413, 1860 RA 01 19 07, NPD 128 44.7) is "most extremely faint, small, round, very gradually brighter middle, 4th of 4", the others being NGC 534, 544 and 546. (Need to add discussion of how the correct object was identified.)
Historical Misidentification: The SGC (Southern Galaxy Catalog) misidentified NGC 549 as PGC 5278, and though that mistake has been corrected in many places, it still exists in a number of others (Example: A Wikisky search for NGC 549 shows PGC 5278, so to see the correct NGC 549 you have to enter the coordinates or PGC designation for PGC 5243). As a result of that error, PGC 5278 is discussed in the next entry.
Physical Information: Apparent size 0.5 by 0.4 arcmin?
DSS image of region near spiral galaxy NGC 549, also showing NGC 544 and NGC 546
Above, a 12 arcmin wide DSS image centered on NGC 549, also showing NGC 544 and 546
Below, a 2.4 arcmin wide DSS image of the galaxy
DSS image of spiral galaxy NGC 549

PGC 5278 (not =
NGC 549)
Not an NGC object but listed here since sometimes misidentified as NGC 549
A magnitude 13.5 lenticular galaxy (type SB0(s)a?) in Sculptor (RA 01 25 28.5, Dec -38 16 03)
Historical Misidentification: As will be noted in the discussion of NGC 549, PGC 5278 was misidentified as that object in the SGC (Southern Galaxy Catalog). Though not yet posted there, Herschel's position was poor, but his description of the nebula and the relative position of its neighboring galaxies makes it absolutely certain that NGC 549 is PGC 5243, and not PGC 5278; but the mistaken identification is still found in a number of places, hence this warning about the mistake.
Physical Information:
DSS image of region near lenticular galaxy PGC 5278, which is sometimes misidentified as NGC 549
Above, a 12 arcmin wide DSS image centered on PGC 5278
Below, a 3 arcmin wide DSS image of the galaxy
DSS image of enticular galaxy PGC 5278, which is sometimes misidentified as NGC 549
Celestial Atlas
(NGC 550 - 499) ←     NGC Objects: NGC 500 - 549     → (NGC 550 - 599)