Celestial Atlas
(NGC 550 - 499) ←     NGC Objects: NGC 500 - 549     → (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 Sep 17, 2013
WORKING 526: Finalize Steinicke data, add/update basic pix, captions, tags

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 39.3, Dec +05 23 16)
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 lenticular galaxy NGC 500
Above, a 2.4 arcmin wide closeup of NGC 500
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near 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 26 01)
Apparent size 0.5 by 0.5 arcmin?
SDSS image of elliptical galaxy NGC 501
Above, a 2.4 arcmin wide closeup of NGC 501
Below, a 12 arcmin wide region centered on the galaxy
Also shown are NGC 495, 498, 499, 510, and part of NGC 496, NGC 503 and IC 1684
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

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 58)
Apparent size 1.1 by 1.0 arcmin?
SDSS image of lenticular galaxy NGC 502
Above, a 2.4 arcmin wide closeup of NGC 502
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near 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 56)
Apparent size 0.9 by 0.7 arcmin?
SDSS image of lenticular galaxy NGC 503
Above, a 2.4 arcmin wide closeup of NGC 503
Below, a 12 arcmin wide region centered on the galaxy
(also shown are NGC 501, 506, 507, 508 and 510, IC 1687, and 8th magnitude star HD 8347)
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

NGC 504 (= PGC 5084)
Discovered (Nov 22, 1827) by
John Herschel
A magnitude 13.0 lenticular galaxy (type S0?) in Pisces (RA 01 23 28.1, Dec +33 12 14)
Apparent size 1.7 by 0.4 arcmin?
SDSS image of lenticular galaxy NGC 504
Above, a 2.4 arcmin wide closeup of NGC 504
Below, a 12 arcmin wide region centered on the galaxy
(also shown are NGC 494, 506, 507 and 508, and IC 1687)
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

NGC 505 (= PGC 5036)
Discovered (Oct 1, 1864) by
Albert Marth (#46)
A magnitude 13.8 lenticular galaxy (type S0?) in Pisces (RA 01 22 57.1, Dec +09 28 08)
Apparent size 0.9 by 0.6 arcmin?
SDSS image of lenticular galaxy NGC 505
Above, a 2.4 arcmin wide closeup of NGC 505
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near 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 35.5, Dec +33 14 38)
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 region 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
A magnitude 11.2 lenticular galaxy (type SA0(r)?) in Pisces (RA 01 23 40.0, Dec +33 15 24)
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 lenticular galaxy NGC 507 (also known as Arp 229), also showing elliptical galaxy NGC 508 and the star listed as NGC 506
Above, a 4 arcmin wide closeup of NGC 507, NGC 508, and the star listed as NGC 506
Below, a 12 arcmin wide region centered on NGC 507, also showing NGC 503, 504, 506, 508, and IC 1687
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
The bright star at right is 8th magnitude HD 8347

NGC 508 (= PGC 5099)
Discovered (Sep 12, 1784) by
William Herschel
A magnitude 13.1 elliptical galaxy (type E0?) in Pisces (RA 01 23 40.7, Dec +33 16 49)
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 00)
Apparent size 1.6 by 0.6 arcmin?
SDSS image of lenticular galaxy NGC 509
Above, a 2.4 arcmin wide closeup of NGC 509
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near lenticular galaxy NGC 509

NGC 510
Recorded (Nov 11, 1867) by
Herman Schultz (Nova V)
A pair of magnitude 14.9 and 15.1 stars in Pisces (RA 01 23 55.5, Dec +33 29 51)
SDSS image of region near the pair of stars listed as NGC 510
Above, a 12 arcmin wide region centered on NGC 510

NGC 511 (= PGC 5103)
Discovered (Oct 26, 1876) by
Édouard Stephan (8-4)
A magnitude 13.7 lenticular galaxy (type S0(r)?) in Pisces (RA 01 23 30.7, Dec +11 17 27)
Apparent size 1.0 by 0.9 arcmin. Contains multiple concentric rings.
SDSS image of lenticular galaxy NGC 511
Above, a 2.4 arcmin wide closeup of NGC 511
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near 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 59.8, Dec +33 54 26)
Apparent size 1.6 by 0.4 arcmin?
SDSS image of spiral galaxy NGC 512
Above, a 2.4 arcmin wide closeup of NGC 512
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 512

NGC 513 (= PGC 5174)
Discovered (Sep 13, 1784) by
William Herschel
A magnitude 13.0 spiral galaxy (type Sc? pec) in Andromeda (RA 01 24 26.9, Dec +33 47 56)
Apparent size 0.9 by 0.6 arcmin?. A Seyfert galaxy (type Sy 1h).
SDSS image of spiral galaxy NGC 513
Above, a 2.4 arcmin wide closeup of NGC 513
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 513

NGC 514 (= PGC 5139)
Discovered (Oct 16, 1784) by
William Herschel
A magnitude 11.7 spiral galaxy (type SAB(rs)c) in Pisces (RA 01 24 03.9, Dec +12 55 02)
Apparent size 3.7 by 3.0 arcmin?
SDSS image of spiral galaxy NGC 514
Above, a 4 arcmin wide closeup of NGC 514
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 514

NGC 515 (= PGC 5201)
Discovered (Sep 13, 1784) by
William Herschel
A magnitude 13.0 lenticular galaxy (type SB0?) in Pisces (RA 01 24 38.7, Dec +33 28 20)
Apparent size 1.4 by 1.1 arcmin?
SDSS image of lenticular galaxy NGC 515
Above, a 2.4 arcmin wide closeup of NGC 515
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 517
SDSS image of region near lenticular galaxy NGC 515, also showing NGC 517

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 08.0, Dec +09 33 07)
Apparent size 1.4 by 0.5 arcmin?
SDSS image of lenticular galaxy NGC 516
Above, a 2.4 arcmin wide closeup of NGC 516
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near lenticular galaxy NGC 516

NGC 517 (= PGC 5214)
Discovered (Sep 13, 1784) by
William Herschel
A magnitude 12.5 lenticular galaxy (type S0?) in Pisces (RA 01 24 43.8, Dec +33 25 44)
Apparent size 1.4 by 0.5 arcmin?
SDSS image of lenticular galaxy NGC 517
Above, a 2.4 arcmin wide closeup of NGC 517
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 515
SDSS image of region near lenticular galaxy NGC 517, also showing NGC 515

NGC 518 (= PGC 5161)
Discovered (Dec 17, 1864) by
Albert Marth (#48)
A magnitude 13.3 spiral galaxy (type Sa?) in Pisces (RA 01 24 17.7, Dec +09 19 51)
Apparent size 1.6 by 0.6 arcmin?
SDSS image of spiral galaxy NGC 518
Above, a 2.4 arcmin wide closeup of NGC 518
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 518

NGC 519 (= PGC 5182)
Discovered (Nov 20, 1886) by
Lewis Swift (6-8)
A magnitude 14.3 elliptical galaxy (type E4?) in Cetus (RA 01 24 28.7, Dec -01 38 29)
Apparent size 0.5 by 0.3 arcmin?
SDSS image of elliptical galaxy NGC 519
Above, a 2.4 arcmin wide closeup of NGC 519
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 530 and IC 1696
SDSS image of region near elliptical galaxy NGC 519, also showing NGC 530 and IC 1696

NGC 520 (= PGC 5193 =
Arp 157)
Discovered (Sep 13, 1784) by William Herschel
A magnitude 11.4 spiral galaxy (type Sa? pec) in Pisces (RA 01 24 34.7, Dec +03 47 39)
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 peculiar spiral galaxy NGC 520, also known as Arp 157
Above, a 4 arcmin wide closeup of NGC 520
Below, a HST image overlaid on the upper half of the image above (Image credits shown below)
Composite of HST and SDSS images of peculiar spiral galaxy NGC 520, also known as Arp 157
Below, a HST closeup of the central portion of the galaxy (North is to the upper left)
(Image Credits: 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
Below, a 12 arcmin wide region centered on the pair
SDSS image of region near peculiar spiral galaxy NGC 520, also known as Arp 157

NGC 521 (= PGC 5190)
Discovered (Oct 8, 1785) by
William Herschel
A magnitude 11.7 spiral galaxy (type SB(r)bc) in Cetus (RA 01 24 33.6, Dec +01 43 53)
Apparent size 2.7 by 2.4 arcmin?
SDSS image of spiral galaxy NGC 521
Above, a 3 arcmin wide closeup of NGC 521
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near 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 42)
Apparent size 2.8 by 0.5 arcmin?
SDSS image of spiral galaxy NGC 522
Above, a 2.4 arcmin wide closeup of NGC 522
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near 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 (Sep 25, 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 20.7, Dec +34 01 31)
Apparent size 2.5 by 0.7 arcmin? Used by the Arp Atlas as an example of a disturbed galaxy with interior absorption.
SDSS image of peculiar spiral galaxy NGC 523, also known as Arp 158
Above, a 3 arcmin wide closeup of NGC 523
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near peculiar spiral galaxy NGC 523, also known as Arp 158

NGC 524 (= PGC 5222)
Discovered (Sep 4, 1786) by
William Herschel
A magnitude 10.2 lenticular galaxy (type SA0/a(rs)?) in Pisces (RA 01 24 47.8, Dec +09 32 19)
Apparent size 4.2 by 4.0 arcmin.
SDSS image of lenticular galaxy NGC 524
Above, a 5 arcmin wide closeup of NGC 524
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near 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 52.8, Dec +09 42 14)
Apparent size 1.5 by 0.7 arcmin?
SDSS image of lenticular galaxy NGC 525
Above, a 2.4 arcmin wide closeup of NGC 525
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near lenticular galaxy NGC 525

WORKING HERE

NGC 526 (= PGC 5120 + PC 5135)
Discovered (Sep 1, 1834) by
John Herschel
A pair of lenticular galaxies in Sculptor
PGC 5120 ("NGC 526A") = A 13th magnitude galaxy (type S0) at RA 01 23 54.3, Dec -35 03 56
PGC 5135 ("NGC 526B") = A 13th magnitude galaxy (type S0) at RA 01 23 56.9, Dec -35 04 09
Per Dreyer, NGC 526 (= GC 309, 1860 RA 01 17 35, NPD 125 48.1) is "faint, small, a little extended, the preceding of 2", the other object being NGC 527. As it happens, "a little extended" is probably due to NGC 526 itself 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.
DSS image of the pair of lenticular galaxies listed as NGC 526
Above, a 2.4 arcmin wide view of NGC 526
Below, a partial closeup of the galaxies (Image Credits: Hubble Legacy Archive, Wikimedia Commons)
Raw HST closeup of the pair of lenticular galaxies listed as NGC 526
Below, a 12 arcmin wide region centered on the pair, also showing NGC 527
DSS image of region near the pair of lenticular galaxies listed as NGC 526, also showing lenticular galaxy NGC 527 and its spiral companion, PGC 5142

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 58.0, Dec -35 06 55)
Per Dreyer, NGC 527 (= GC 310, 1860 RA 01 17 38, NPD 125 51.0) is "faint, small, a little extended, brighter middle, the following of 2", the other object being NGC 526. Apparent size 1.6 by 0.3 arcmin. Recessional velocity 5800 km/sec. (PGC 5142 may have contributed to Herschel's overall impression of the object, but is too faint to be considered a certain part of NGC 527. It is, however, a companion of NGC 527 and sometimes referred to as NGC 527B, so it is discussed immediately below.)
DSS image of lenticular galaxy NGC 527 and its spiral companion, PGC 5142
Above, a 2.4 arcmin wide view of NGC 527 and PGC 5142
Below, a 12 arcmin wide region centered on the pair, also showing NGC 526
DSS image of region near lenticular galaxy NGC 527 and its spiral companion, PGC 5142, also showing the pair of lenticular galaxies listed as NGC 526

PGC 5142 (= "NGC 527B")
Not an NGC object, but sometimes called NGC 527B due to its proximity to
NGC 527
A 14th magnitude spiral galaxy (type S?) in Sculptor (RA 01 23 59.1, Dec -35 07 41)
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 14)
Apparent size 1.2 by 0.8 arcmin.

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 40.2, Dec +34 42 47)
Apparent size 2.4 by 2.1 arcmin. A member of Hickson Compact Group 10, consisting of NGC 529, 531, 536 (which see for images) and 542.

NGC 530 (=
IC 106 = PGC 5210 = PGC 73947)
Discovered (Nov 20, 1886) by Lewis Swift (6-9) (and later listed as NGC 530)
Discovered (Nov 16, 1887) by Guillaume Bigourdan (and later listed as IC 106)
A 13th magnitude lenticular galaxy (type SB0+) in Cetus (RA 01 24 41.7, Dec -01 35 13)
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). 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 lenticular galaxy NGC 530
Above, a 2.4 arcmin wide closeup of NGC 530
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 519 and IC 1696
DSS image of region near lenticular galaxy NGC 530, also showing elliptical galaxies NGC 519 and IC 1696

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)
Apparent size 1.8 by 0.5 arcmin. A member of Hickson Compact Group 10, consisting of NGC 531, 529, 536 (which see for images) and 542.

NGC 532 (= PGC 5264)
Discovered (Sep 21, 1786) by
William Herschel
A 13th magnitude spiral galaxy (type Sab) in Pisces (RA 01 25 17.1, Dec +09 15 51)
Apparent size 3.1 by 1.0 arcmin.
SDSS image of spiral galaxy NGC 532
Above, a 3 arcmin wide closeup of NGC 532
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of spiral galaxy NGC 532

NGC 533 (= PGC 5283)
Discovered (Oct 8, 1785) by
William Herschel
An 11th magnitude elliptical galaxy (type E3) in Cetus (RA 01 25 31.4, Dec +01 45 33)
Apparent size 3.8 by 2.3 arcmin.

NGC 534 (= PGC 5215)
Discovered (Oct 23, 1835) by
John Herschel
A 13th magnitude lenticular galaxy (type SB0) in Sculptor (RA 01 24 44.5, Dec -38 07 44)
Apparent size 1.0 by 0.9 arcmin. (For now, see NGC 546 for an image)

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 31.0, Dec -01 24 32)
Apparent size 1.0 by 0.3 arcmin.

NGC 536 (= PGC 5344), part of Hickson Compact Group 10
Discovered (Sep 13, 1784) by
William Herschel
A 12th magnitude spiral galaxy (type SB(r)b) in Andromeda (RA 01 26 21.6, Dec +34 42 12)
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 spiral galaxy NGC 536, also showing part of spiral galaxy NGC 542
Above, a 3.6 arcmin wide closeup of NGC 536, also showing part of NGC 542
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 531 and 542
SDSS image of region near spiral galaxy NGC 536, also showing lenticular galaxy NGC 531 and spiral galaxy NGC 542
Below, a wide-field view of Hickson Compact Group 10, consisting of NGC 536, 529, 531 and 542
(Image Credits: Gary White and Verlenne Monroe/Adam Block/NOAO/AURA/NSF)
NOAO image of Hickson Compact Group 10, consisting of spiral galaxies NGC 536 and 542, and lenticular galaxies NGC 529 and 531 (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 (Sep 25, 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 20.7, Dec +34 01 31)
(this entry will probably contain mostly historical information; for anything else see NGC 523)

NGC 538 (= PGC 5275)
Discovered (Nov 20, 1886) by
Lewis Swift (6-10)
A 14th magnitude spiral galaxy (type SB(s)ab) in Cetus (RA 01 25 26.1, Dec -01 33 03)
Apparent size 1.3 by 0.6 arcmin.
SDSS image of spiral galaxy NGC 538
Above, a 2.4 arcmin wide closeup of NGC 538
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 538

NGC 539 (=
NGC 563 = PGC 5269)
Discovered (Oct 31, 1885) by Francis Leavenworth (I-28) (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 52)
Apparent size 1.6 by 1.3 arcmin.
DSS image of spiral galaxy NGC 539
Above, a 2.4 arcmin wide closeup of NGC 539
Below, a 12 arcmin wide region centered on the galaxy
DSS image of region near spiral galaxy NGC 539

NGC 540 (= PGC 5410)
Discovered (Oct 15, 1885) by
Francis Leavenworth (I-29)
A 15th magnitude lenticular galaxy (type SB0) in Cetus (RA 01 27 08.8, Dec -20 02 12)
Apparent size 0.9 by 0.4 arcmin.

NGC 541 (= PGC 5305 =
Arp 133)
Discovered (Oct 30, 1864) by Heinrich d'Arrest
A 12th magnitude lenticular galaxy (type E/S0) in Cetus (RA 01 25 44.3, Dec -01 22 46)
Apparent size 2.2 by 1.7 arcmin. Chosen by Halton Arp for his Atlas of Peculiar Galaxies as an example of an elliptical galaxy with a nearby fragment, hence its designation as Arp 133.
SDSS image of lenticular galaxy NGC 541, also known as Arp 133
Above, a 2.4 arcmin wide closeup of NGC 539
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 535, 543, 545 and 547
SDSS image of region near lenticular galaxy NGC 541, also known as Arp 133, also showing lenticular galaxies NGC 535, NGC 541 and NGC 545 and elliptical galaxy NGC 547

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 30.9, Dec +34 40 34)
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
Above, a 2.4 arcmin wide closeup of NGC 542
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 531 and 536
SDSS image of spiral galaxy NGC 542, a member of Hickson Compact Group 10, with fellow group members spiral galaxy NGC 536 and lenticular galaxy NGC 531

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 33)
Apparent size 0.6 by 0.3 arcmin.

NGC 544 (= PGC 5253)
Discovered (Oct 23, 1835) by
John Herschel
A 13th magnitude lenticular galaxy (type SAB0^-) in Sculptor (RA 01 25 11.8, Dec -38 05 40)
Apparent size 1.5 by 1.1 arcmin. A member of a group with NGC 546 (which see for images).

NGC 545 (= PGC 5323)
Discovered (Oct 1, 1785) by
William Herschel
A 12th magnitude lenticular galaxy (type E/S0) in Cetus (RA 01 25 59.0, Dec -01 20 26)
Apparent size 2.6 by 1.6 arcmin. A double system with NGC 547. (For now, see the image at NGC 541)

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 12.6, Dec -38 04 09)
Apparent size 1.4 by 0.5 arcmin. A member of a group with NGC 544.
DSS image of spiral galaxy NGC 546, also showing the northern edge of lenticular galaxy NGC 544
Above, a 2.4 arcmin wide closeup of NGC 546, also showing part of NGC 544
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 534, 544 and 549
DSS image of spiral galaxy NGC 546, also showing spiral galaxy NGC 549 and lenticular galaxies NGC 534 and NGC 544

NGC 547 (= PGC 5324)
Discovered (Oct 1, 1785) by
William Herschel
A 12th magnitude elliptical galaxy (type E1) in Cetus (RA 01 26 00.7, Dec -01 20 42)
Apparent size 1.9 by 1.8 arcmin. A double system with NGC 545. (For now, see the image at NGC 541)

NGC 548 (= PGC 5326)
Discovered (Nov 2, 1867) by
George Searle (25, HN 33)
A 14th magnitude elliptical galaxy (type E4) in Cetus (RA 01 26 02.5, Dec -01 13 31)
Apparent size 0.8 by 0.5 arcmin.

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 07.0, Dec -38 00 26)
Apparent size 0.5 by 0.4 arcmin. (Note: A Wikisky search for NGC 549 shows the wrong object (PGC 5278), incorrectly labeled as NGC 549; however, a search for PGC 5243 shows the correct NGC 549, labeled as PGC 5243.)
DSS image of spiral galaxy NGC 549
Above, a 2.4 arcmin wide closeup of NGC 549
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 544 and 546
DSS image of region near spiral galaxy NGC 549, also showing spiral galaxy NGC 546 and lenticular galaxy NGC 544
Celestial Atlas
(NGC 550 - 499) ←     NGC Objects: NGC 500 - 549     → (NGC 550 - 599)