Celestial Atlas
(NGC 2500 - 2549) ←     NGC Objects: NGC 2550 - 2599     → (NGC 2600 - 2649)
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Page last updated Apr 4, 2013
WORKING "2550A": Add basic pix, tags

NGC 2550 (= PGC 23604)
Discovered (Sep 7, 1885) by
Lewis Swift (2-34)
A 13th-magnitude spiral galaxy (type Sb pec?) in Camelopardalis (RA 08 24 33.7, Dec +74 00 43)
Based on a recessional velocity of 2270 km/sec, NGC 2550 is about 100 million light years away, in reasonable agreement with redshift-independent distance estimates of 115 to 120 million light years. Given that and its apparent size of 1.0 by 0.4 arcmins, it is about 30 thousand light years across.
DSS image of spiral galaxy NGC 2550
Above, a 2.4 arcmin wide closeup of NGC 2550
Below, a 12 arcmin wide region centered on the galaxy
DSS image of region near spiral galaxy NGC 2550

PGC 23781 (= "NGC 2550A")
Not an NGC object, but sometimes called NGC 2550A since in general area of
NGC 2550
A 13th-magnitude spiral galaxy (type Sc) in Camelopardalis (RA 08 28 39.1, Dec +73 44 53)
Apparent size 1.6 by 1.4 arcmin. Just as close or closer to NGC 2551 than NGC 2550, so its sometime designation as NGC 2550A is neither useful nor significant.

NGC 2551 (= PGC 23608)
Discovered (Aug 9, 1882) by
Wilhelm Tempel (VI-2)
A 12th-magnitude spiral galaxy (type Sa) in Camelopardalis (RA 08 24 50.2, Dec +73 24 45)
Apparent size 1.6 by 1.0 arcmin

NGC 2552 (= PGC 23340)
Discovered (Mar 9, 1788) by
William Herschel
A 12th-magnitude spiral galaxy (type SBm) in Lynx (RA 08 19 19.6, Dec +50 00 25)
Apparent size 3.6 by 2.1 arcmin

NGC 2553 (= PGC 23240)
Discovered (Feb 17, 1865) by
Albert Marth (116)
A 14th-magnitude spiral galaxy (type S) in Cancer (RA 08 17 35.1, Dec +20 54 12)
Apparent size 1.7 by 0.8 arcmin

NGC 2554 (= PGC 23256)
Discovered (Feb 28, 1785) by
William Herschel
A 12th-magnitude lenticular galaxy (type S0/a) in Cancer (RA 08 17 53.4, Dec +23 28 20)
The second IC states (per d'Arrest) "Minute of RA is 9, not 10". Apparent size 3.2 by 2.4 arcmin.

NGC 2555 (= PGC 23259)
Discovered (Dec 20, 1784) by
William Herschel
A 12th-magnitude spiral galaxy (type SBab) in Hydra (RA 08 17 56.3, Dec +00 44 42)
Apparent size 1.9 by 1.4 arcmin

NGC 2556 (= PGC 23325)
Discovered (Feb 17, 1865) by
Albert Marth (117)
A 15th-magnitude lenticular galaxy (type S0) in Cancer (RA 08 19 00.8, Dec +20 56 15)
Apparent size 0.4 by 0.2 arcmin

NGC 2557 (= PGC 23329)
Discovered (Feb 2, 1877) by
Édouard Stephan (8-29)
A 13th-magnitude lenticular galaxy (type SB0) in Cancer (RA 08 19 10.9, Dec +21 26 10)
Apparent size 1.2 by 1.0 arcmin

NGC 2558 (= PGC 23337)
Discovered (Feb 13, 1787) by
William Herschel
A 13th-magnitude spiral galaxy (type Sab) in Cancer (RA 08 19 12.7, Dec +20 30 41)
Apparent size 1.8 by 1.3 arcmin

NGC 2559 (= PGC 23222)
Discovered (Feb 5, 1837) by
John Herschel
An 11th-magnitude spiral galaxy (type SBbc) in Puppis (RA 08 17 06.1, Dec -27 27 25)
Apparent size 3.0 by 1.4 arcmin

NGC 2560 (= PGC 23367)
Discovered (Mar 17, 1862) by
Heinrich d'Arrest
A 13th-magnitude lenticular galaxy (type S0/a) in Cancer (RA 08 19 51.9, Dec +20 59 05)
Apparent size 1.4 by 0.3 arcmin

NGC 2561 (= PGC 23351)
Discovered (Mar 23, 1887) by
Lewis Swift (6-31)
A 13th-magnitude spiral galaxy (type SBc) in Hydra (RA 08 19 36.7, Dec +04 39 24)
Apparent size 1.1 by 0.6 arcmin.

NGC 2562 (= PGC 23395)
Discovered (Feb 13, 1787) by
William Herschel
A 13th-magnitude lenticular galaxy (type S0/a) in Cancer (RA 08 20 23.5, Dec +21 07 54)
Apparent size 1.0 by 0.7 arcmin.

NGC 2563 (= PGC 23404)
Discovered (Feb 13, 1787) by
William Herschel
A 12th-magnitude lenticular galaxy (type S0) in Cancer (RA 08 20 35.7, Dec +21 04 05)
Apparent size 2.0 by 1.7 arcmin.

NGC 2564 (= PGC 23290)
Discovered (Jan 28, 1837) by
John Herschel
A 12th-magnitude lenticular galaxy (type E/S0) in Puppis (RA 08 18 30.0, Dec -21 48 58)
Apparent size 1.2 by 0.8 arcmin.

NGC 2565 (= PGC 23362)
Discovered (1886) by
Gerhard Lohse
A 13th-magnitude spiral galaxy (type SBbc) in Cancer (RA 08 19 48.2, Dec +22 01 53)
Apparent size 1.9 by 0.9 arcmin.

NGC 2566 (= PGC 23303)
Discovered (Mar 6, 1785) by
William Herschel
An 11th-magnitude spiral galaxy (type SBab) in Puppis (RA 08 18 45.5, Dec -25 30 02)
The second IC adds (per Howe) "very small nebula or nebulous 11th magnitude star with 12th magnitude star close". Apparent size 2.9 by 1.7 arcmin.

NGC 2567 (= OCL 708)
Discovered (Mar 4, 1793) by
William Herschel
A 7th-magnitude open cluster (type III2m) in Puppis (RA 08 18 32.0, Dec -30 38 24)
Apparent size 11 arcmin.

NGC 2568 (= OCL 727)
Discovered (1881) by
Edward Barnard (c)
An 11th-magnitude open cluster (type I3p) in Puppis (RA 08 18 18.1, Dec -37 06 19)
Apparent size 3.0 arcmin.

NGC 2569 (= PGC 23442)
Discovered (Feb 19, 1862) by
Heinrich d'Arrest
A 14th-magnitude lenticular galaxy (type E/S0) in Cancer (RA 08 21 21.1, Dec +20 52 05)
Apparent size 0.6 by 0.5 arcmin.

NGC 2570 (= PGC 23443)
Discovered (Feb 20, 1873) by
Ralph Copeland
A 15th-magnitude spiral galaxy (type Sab) in Cancer (RA 08 21 22.6, Dec +20 54 38)
Apparent size 1.1 by 0.6 arcmin.

NGC 2571 (= OCL 701)
Discovered (Mar 3, 1793) by
William Herschel
A 7th-magnitude open cluster (type IV1p) in Puppis (RA 08 18 56.3, Dec -29 44 57)
Apparent size 7.0 arcmin.

NGC 2572 (= PGC 23441)
Discovered (Feb 2, 1877) by
Édouard Stephan (8-30)
A 14th-magnitude spiral galaxy (type Sa) in Cancer (RA 08 21 24.7, Dec +19 08 52)
Apparent size 1.3 by 0.5 arcmin.

NGC 2573 (= PGC 6249), Polarissima Australis
Discovered (Mar 29, 1837) by
John Herschel
A 14th-magnitude spiral galaxy (type SBc) in Octans (RA 01 41 53.2, Dec -89 20 03)
Apparent size 1.9 by 0.7 arcmin. Due to its extreme southern position (hence its name, "Polarissima Australis") a striking example of the effect of precession on the apparent position of objects, having moved from about 8 hours RA in 1860 coordinates to about 2 hours in 2000 coordinates simply because the Pole is moving past the location of the galaxy.
DSS image of spiral galaxy NGC 2573, also known as Polarissima Australis
Above, a 2.4 arcmin wide closeup of NGC 2573
Below, a 12 arcmin wide region centered on the galaxy
DSS image of region near spiral galaxy NGC 2573, also known as Polarissima Australis

PGC 70680 (= "NGC 2573A")
Not an NGC object but sometimes called NGC 2573A because in the general area of
NGC 2573
A 14th-magnitude spiral galaxy (type SBb? pec) in Octans (RA 23 12 14.6, Dec -89 07 27)
Based on a recessional velocity of 2475 km/sec, PGC 70680 is about 115 million light years away, in reasonable agreement with the 120 million light year recessional velocity distance estimate for PGC 70533. This supports the supposition, based on their distorted shapes, that they are gravitationally interacting. Given that and its apparent size of 2.1 by 0.6 arcmin, PGC 70680 is about 70 thousand light years across.
DSS image of spiral galaxy PGC 70680, sometimes called NGC 2573A, and irregular galaxy PGC 70533, sometimes called NGC 2573B
Above, a 3 arcmin wide closeup of apparently interacting galaxies PGC 70680 and PGC 70533
Below, a 12 arcmin wide region centered on PGC 70680
DSS image of region near spiral galaxy PGC 70680, sometimes called NGC 2573A, and irregular galaxy PGC 70533, sometimes called NGC 2573B

PGC 70533 (= "NGC 2573B")
Not an NGC object but sometimes called NGC 2573B because in the general area of
NGC 2573
A 15th-magnitude irregular galaxy (type IBm? pec) in Octans (RA 23 07 32.0, Dec -89 06 55)
Based on a recessional velocity of 2560 km/sec, PGC 70533 is about 120 million light years away, in reasonable agreement with the 115 million light year recessional velocity distance estimate for PGC 70680, which see for images. This supports the supposition, based on their distorted shapes, that they are gravitationally interacting. (There is also a redshift-independent distance estimate of 100 million light years, but whatever the correct value, the pair of galaxies are probably at the same distance.) Given that and its apparent size of 1.5 by 0.5 arcmin, PGC 70533 is about 50 thousand light years across.

NGC 2574 (= PGC 23418)
Discovered (1886) by
Ormond Stone (II-401)
A 12th-magnitude spiral galaxy (type Sab) in Hydra (RA 08 20 48.1, Dec -08 55 06)
Apparent size 2.3 by 1.2 arcmin.

NGC 2575 (= PGC 23501)
Discovered (Feb 23, 1878) by
Édouard Stephan (9-14)
A 13th-magnitude spiral galaxy (type Sc) in Cancer (RA 08 22 45.0, Dec +24 17 49)
Apparent size 1.7 by 1.3 arcmin<

NGC 2576 (= PGC 23512)
Discovered (Mar 29, 1865) by
Albert Marth (118)
A 14th-magnitude spiral galaxy (type Sb) in Cancer (RA 08 22 57.8, Dec +25 44 22)
Apparent size 1.7 by 0.3 arcmin

NGC 2577 (= PGC 23498)
Discovered (Nov 16, 1784) by
William Herschel
A 12th-magnitude lenticular galaxy (type E/S0) in Cancer (RA 08 22 43.4, Dec +22 33 13)
Apparent size 1.8 by 1.1 arcmin

NGC 2578 (= PGC 23440)
Discovered (Mar 8, 1793) by
William Herschel
A 13th-magnitude lenticular galaxy (type SB0/a) in Puppis (RA 08 21 24.2, Dec -13 19 05)
Apparent size 2.2 by 1.3 arcmin

NGC 2579 (= OCL 724)
Discovered (Feb 1, 1835) by
John Herschel
An 8th-magnitude open cluster (type IV1p) in Puppis (RA 08 20 52.7, Dec -36 12 58)
Apparent size 19 arcmin

NGC 2580 (= OCL 709)
Discovered (Feb 5, 1837) by
John Herschel
A 10th-magnitude open cluster (type II2m) in Puppis (RA 08 21 28.0, Dec -30 17 30)
Apparent size 8.0 arcmin

NGC 2581 (= PGC 23599)
Discovered (Mar 7, 1885) by
Édouard Stephan (13-38)
A 13th-magnitude spiral galaxy (type SB?) in Cancer (RA 08 24 30.9, Dec +18 35 49)
Apparent size 1.1 by 0.8 arcmin

NGC 2582 (=
IC 2359 = PGC 23630)
Discovered (Feb 22, 1789) by William Herschel (and later listed as NGC 2582)
Discovered (Feb 13, 1901) by Max Wolf (and later listed as IC 2359)
A 13th-magnitude spiral galaxy (type (R)SAB(s)ab) in Cancer (RA 08 25 12.1, Dec +20 20 03)
Based on a recessional velocity of 4440 km/sec, NGC 2582 is 205 million light years away, in fair agreement with a redshift-independent distance estimate of 230 million light years. Given that and its apparent size of 1.2 by 1.2 arcmin, it is about 70 thousand light years across.
SDSS image of spiral galaxy NGC 2582
Above, a 2.4 arcmin wide closeup of NGC 2582
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 2582

NGC 2583 (= PGC 23516)
Discovered (1886) by
Frank Muller (II-402)
A 13th-magnitude elliptical galaxy (type E0) in Hydra (RA 08 23 07.9, Dec -05 00 09)
Apparent size 0.9 by 0.9 arcmin
SDSS image of elliptical galaxy NGC 2583
Above, a 2.4 arcmin wide closeup of NGC 2583
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 2584 and 2585
SDSS image of region near elliptical galaxy NGC 2583, also showing spiral galaxies NGC 2584 and 2585

NGC 2584 (= PGC 23523)
Discovered (1886) by
Frank Muller (II-403)
A 14th-magnitude spiral galaxy (type Sbc) in Hydra (RA 08 23 15.5, Dec -04 58 15)
Apparent size 1.2 by 0.6 arcmin
SDSS image of spiral galaxy NGC 2584
Above, a 2.4 arcmin wide closeup of NGC 2584
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 2583 and 2585
SDSS image of region near spiral galaxy NGC 2584, also showing elliptical galaxy NGC 2583 and spiral galaxy NGC 2585

NGC 2585 (= PGC 23537)
Discovered (1886) by
Frank Muller (II-404)
A 14th-magnitude spiral galaxy (type SB(s)b pec) in Hydra (RA 08 23 26.2, Dec -04 54 55)
Apparent size 1.8 by 0.8 arcmin
SDSS image of spiral galaxy NGC 2585
Above, a 2.4 arcmin wide closeup of NGC 2585
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 2583 and 2584
SDSS image of region near spiral galaxy NGC 2585, also showing elliptical galaxy NGC 2583 and spiral galaxy NGC 2584

NGC 2586
Recorded (1886) by
Frank Muller (II-405)
Three stars in Hydra (RA 08 23 31.4, Dec -04 57 05)

NGC 2587 (= OCL 706)
Discovered (Jan 22, 1835) by
John Herschel
A 9th-magnitude open cluster (type II1p) in Puppis (RA 08 23 24.0, Dec -29 30 31)
Apparent size 10 arcmin

NGC 2588 (= OCL 715)
Discovered (Feb 16, 1836) by
John Herschel
A 12th-magnitude open cluster (type II1p) in Puppis (RA 08 23 09.5, Dec -32 58 30)
Apparent size 2.0 arcmin

NGC 2589
Discovered (Feb 13, 1887) by
Lewis Swift (6-32)
A lost or nonexistent object in Hydra (RA 08 24 29.4, Dec -08 46 04)
The second IC adds "Not found on 3 nights by Howe".

NGC 2590 (= PGC 23616 =
IC 507)
Discovered (Feb 26, 1878) by Édouard Stephan (9-15) (and later listed as NGC 2590)
Discovered (Feb 3, 1888) by Lewis Swift (and later listed as IC 507)
A 13th-magnitude spiral galaxy (type SA(s)bc?) in Hydra (RA 08 25 01.9, Dec -00 35 30)
(See IC 507 for a discussion of the duplicate listing.) Apparent size 2.2 by 0.7 arcmin?

NGC 2591 (= PGC 24231)
Discovered (Aug 12, 1866) by
Heinrich d'Arrest
A 12th-magnitude spiral galaxy (type Sc) in Camelopardalis (RA 08 37 25.5, Dec +78 01 32)
Apparent size 3.0 by 0.6 arcmin

NGC 2592 (= PGC 23701)
Discovered (Mar 11, 1785) by
William Herschel
A 12th-magnitude elliptical galaxy (type E2) in Cancer (RA 08 27 08.1, Dec +25 58 15)
Apparent size 1.7 by 1.4 arcmin

NGC 2593 (= PGC 23692)
Discovered (Jan 26, 1865) by
Albert Marth (119)
A 14th-magnitude lenticular galaxy (type S0/a) in Cancer (RA 08 26 47.8, Dec +17 22 28)
Apparent size 0.9 by 0.5 arcmin

NGC 2594 (= PGC 23704)
Discovered (Mar 29, 1865) by
Albert Marth (120)
A 14th-magnitude lenticular galaxy (type S0) in Cancer (RA 08 27 17.1, Dec +25 52 43)
Apparent size 0.8 by 0.5 arcmin

NGC 2595 (= PGC 23725)
Discovered (Jan 11, 1787) by
William Herschel
A 12th-magnitude spiral galaxy (type SBc) in Cancer (RA 08 27 41.9, Dec +21 28 46)
Apparent size 3.2 by 2.4 arcmin

NGC 2596 (= PGC 23714)
Discovered (Jan 26, 1865) by
Albert Marth (121)
A 14th-magnitude spiral galaxy (type Sb) in Cancer (RA 08 27 26.6, Dec +17 17 04)
Apparent size 1.5 by 0.6 arcmin

NGC 2597
Discovered (Jan 1, 1864) by
Albert Marth (122)
A pair of stars in Cancer (RA 08 29 57.4, Dec +21 30 09)

NGC 2598 (= PGC 23855)
Discovered (Jan 1, 1864) by
Albert Marth (123)
A 14th-magnitude spiral galaxy (type SBa) in Cancer (RA 08 30 02.5, Dec +21 29 18)
Apparent size 1.3 by 0.6 arcmin

NGC 2599 (= PGC 23941)
Discovered (Nov 16, 1784) by
William Herschel
A 12th-magnitude spiral galaxy (type SAa) in Cancer (RA 08 32 11.2, Dec +22 33 39)
Based on a recessional velocity of 4740 km/sec, NGC 2599 is about 220 million light years away. Given that and its apparent size of 2.8 by 2.5 arcmin, it is about 180 thousand light years across.
SDSS image of spiral galaxy NGC 2599
Above, a 3 arcmin wide closeup of NGC 2599
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 2599
Celestial Atlas
(NGC 2500 - 2549) ←     NGC Objects: NGC 2550 - 2599     → (NGC 2600 - 2649)