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Page last updated Oct 15, 2013
WORKING: Check positions, historical IDs (Corwin+), add basic pix, captions, tags
IC 2550 (= PGC 29615)
Discovered (May 7, 1900) by Stephane Javelle (1145)
A magnitude 13.7 spiral galaxy (type SAB(rs)b) in Leo Minor (RA 10 10 27.9, Dec +27 57 21)
Based on a recessional velocity of 4790 km/sec, IC 2550 is about 225 million light years away. Given that and its apparent size of 0.85 by 0.75 arcmin, it is about 55 thousand light years across.
Above, a 2.4 arcmin wide SDSS image of IC 2550
Below, a 12 arcmin wide SDSS image centered on the galaxy
IC 2551 (= PGC 29632)
Discovered (Mar 26, 1903) by Stephane Javelle (1146)
A magnitude 13.6 spiral galaxy (type S??) in Leo (RA 10 10 40.3, Dec +24 24 53)
Apparent size 1.0 by 0.8 arcmin?
IC 2552 (= PGC 29637)
Discovered (May 1, 1900) by DeLisle Stewart (335)
A magnitude 12.5 lenticular galaxy (type E/SB0??) in Antlia (RA 10 10 46.1, Dec -34 50 40)
Apparent size 1.6 by 1.5 arcmin?
IC 2553
Discovered (1893) by Williamina Fleming (70)
A magnitude 10.3 planetary nebula in Carina (RA 10 09 20.9, Dec -62 36 47)
Apparent size 0.15 arcmin?
Above, a 4 arcmin wide DSS image centered on IC 2553
Below, a 12 arcmin wide DSS image centered on the nebula
IC 2554 (= PGC 29512 + PGC 29511)
Discovered (Mar 20, 1901) by DeLisle Stewart (334)
A magnitude 11.8 spiral galaxy (type SB(s)bc? pec) in Carina (RA 10 08 51.6, Dec -67 01 17)
Listed as two separate objects, but probably a single very distorted galaxy. Apparent size about 3.0 by 1.2 arcmin.
Above, a 4 arcmin wide DSS image centered on IC 2554
Below, a 12 arcmin wide DSS image centered on the galaxy
IC 2555 (= NGC 3157 = PGC 29691)
Discovered (Jan 28, 1835) by John Herschel (and later listed as NGC 3157)
Discovered (May 1, 1900) by DeLisle Stewart (336) (and later listed as IC 2555)
A magnitude 13.2 spiral galaxy (type SBc??) in Antlia (RA 10 11 42.4, Dec -31 38 34)
This entry will be primarily concerned with historical information; for anything else see NGC 3157.
IC 2556 (= PGC 29727)
Discovered (May 1, 1900) by DeLisle Stewart (337)
A magnitude 13.7 spiral galaxy (type SBcd??) in Antlia (RA 10 12 37.5, Dec -34 43 42)
Apparent size 2.0 by 1.0 arcmin?
IC 2557 (= PGC 29977)
Discovered (May 16, 1903) by Stephane Javelle (1147)
A magnitude 14.8 spiral galaxy (type S??) in Leo Minor (RA 10 16 05.8, Dec +38 06 30)
Apparent size 0.3 by 0.2 arcmin?
IC 2558 (= PGC 29895)
Discovered (May 1, 1900) by DeLisle Stewart (338)
A magnitude 13.7 spiral galaxy (type Sd??) in Antlia (RA 10 14 44.4, Dec -34 20 13)
Apparent size 1.2 by 0.7 arcmin?
IC 2559 (= PGC 29898)
Discovered (May 1, 1900) by DeLisle Stewart (339)
A magnitude 13.4 spiral galaxy (type SBb??) in Antlia (RA 10 14 45.3, Dec -34 03 31)
Apparent size 1.7 by 0.7 arcmin?
IC 2560 (= PGC 29993)
Discovered (Dec 28, 1897) by Lewis Swift (XI-106)
A magnitude 11.7 spiral galaxy (type (R')SB(r)b?) in Antlia (RA 10 16 18.6, Dec -33 33 48)
Apparent size 4.3 by 2.2 arcmin. A Seyfert galaxy (type Sy 2).
Above, a 5 arcmin wide DSS image of IC 2560
Below, a HST image of the central portion of the galaxy (rotated to allow more detail)
(Image Credits: ESA/Hubble/NASA; Acknowledgement: Nick Rose)
Below, a 12 arcmin wide DSS image centered on the galaxy
IC 2561 (= PGC 30147)
Discovered (May 14, 1900) by Stephane Javelle (1148)
A magnitude 14.1 spiral galaxy (type Sb??) in Leo Minor (RA 10 19 08.5, Dec +34 40 28)
Apparent size 0.9 by 0.5 arcmin?
IC 2562 (= PGC 30119)
Discovered (Mar 29, 1896) by Stephane Javelle (1149)
A magnitude 14.5 spiral galaxy (type Sc??) in Leo (RA 10 18 54.4, Dec +16 09 18)
Apparent size 0.7 by 0.4 arcmin?
IC 2563 (= PGC 30125)
Discovered (May 1, 1900) by DeLisle Stewart (340)
A magnitude 15.0 spiral galaxy (type (R)SBd? pec) in Antlia (RA 10 18 51.9, Dec -32 35 48)
Apparent size 1.1 by 0.5 arcmin?
IC 2564 (= PGC 2080857)
Discovered (Apr 13, 1896) by Stephane Javelle (1150)
A magnitude 15.2 elliptical galaxy (type E0??) in Leo Minor (RA 10 21 27.6, Dec +36 27 09)
Apparent size 0.4 by 0.4 arcmin?
IC 2565 (= PGC 30288)
Discovered (Apr 7, 1896) by Stephane Javelle (1151)
A magnitude 14.2 lenticular galaxy (type S0/a?) in Leo Minor (RA 10 21 17.9, Dec +27 55 48)
Above, a 1.2 arcmin wide SDSS image of IC 2565, also showing PGC 3084850 and PGC 1821852
Below, a 12 arcmin wide SDSS image centered on the group
PGC 3084850 (= "IC 2565A")
Not an IC object but sometimes called IC 2565A due to its proximity to IC 2565
A magnitude 17 lenticular galaxy (type S0/a?) in Leo Minor (RA 10 21 17.1, Dec +27 55 44)
Apparent size 0.15 by 0.1 arcmin. (See IC 2565 for images)
PGC 1821852
Not an IC object but listed here due to its apparent and physical proximity to IC 2565
A magnitude 18(?) lenticular galaxy (type S0/a?) in Leo Minor (RA 10 21 17.5, Dec +27 55 59)
Apparent size 0.15 by 0.1 arcmin. (See IC 2565 for images)
IC 2566 (= PGC 30357)
Discovered (Apr 13, 1896) by Stephane Javelle (1152)
A magnitude 14.0 lenticular galaxy (type S0??) in Leo Minor (RA 10 22 19.4, Dec +36 35 00)
Apparent size 0.8 by 0.5 arcmin?
IC 2567 (= PGC 30339)
Discovered (Mar 26, 1900) by Stephane Javelle (1153)
A magnitude 14.4 lenticular galaxy (type SB0??) in Leo (RA 10 21 57.9, Dec +24 39 19)
Apparent size 0.9 by 0.7 arcmin?
IC 2568 (= PGC 30371)
Discovered (May 13, 1896) by Stephane Javelle (1154)
A magnitude 14.1 spiral galaxy (type SBa??) in Leo Minor (RA 10 22 30.0, Dec +36 35 59)
Apparent size 1.2 by 0.6 arcmin?
IC 2569 (= PGC 1711559)
Discovered (Mar 26, 1900) by Stephane Javelle (1155)
A magnitude 14.4 elliptical galaxy (type E0??) in Leo (RA 10 22 53.5, Dec +24 36 25)
Apparent size 0.3 by 0.3 arcmin?
IC 2570 (= PGC 30307)
Discovered (May 1, 1900) by DeLisle Stewart (341)
A magnitude 14.9 spiral galaxy (type SBbc??) in Antlia (RA 10 21 34.3, Dec -33 37 24)
Apparent size 0.8 by 0.5 arcmin?
IC 2571 (= NGC 3223 = PGC 30308)
Discovered (Feb 2, 1835) by John Herschel (and later listed as NGC 3223)
Discovered (Dec 30, 1897) by Lewis Swift (XI-107) (and later listed as IC 2571)
A magnitude 11.0 spiral galaxy (type Sb??) in Antlia (RA 10 21 34.8, Dec -34 16 01)
This entry will primarily contain historical information; for anything else see NGC 3223.
IC 2572 (= PGC 30562)
Discovered (May 7, 1896) by Stephane Javelle (1156)
A magnitude 14.6 spiral galaxy (type (R)Sa(r)?) in Leo Minor (RA 10 25 07.2, Dec +28 05 39)
Apparent size 0.95 by 0.45 arcmin.
Above, a 1.2 arcmin wide SDSS image of IC 2572
Below, a 12 arcmin wide SDSS image centered on the galaxy, also showing NGC 3234
IC 2573 (= PGC 30442)
Discovered (May 1, 1900) by DeLisle Stewart (342)
A magnitude 14.5 spiral galaxy (type SBcd??) in Antlia (RA 10 23 30.2, Dec -35 27 23)
Apparent size 1.5 by 0.4 arcmin?
IC 2574 (= PGC 30819), the Coddington Nebula
Discovered (Apr 17, 1898) by Edwin Coddington
A magnitude 10.4 spiral galaxy (type SAB(s)m) in Ursa Major (RA 10 28 22.4, Dec +68 25 00)
IC 2574 is a very low surface brightness galaxy, barely discernible on normally exposed images of the area, despite its large size (the visible-light image below is considerably enhanced). Its recessional velocity is only 55 km/sec, which is much smaller than peculiar (non-Hubble expansion) velocities, and cannot be used to estimate its distance. Redshift-independent distance estimates range from 9 to 17 million light years, suggesting that it may be a member of the nearby M81 group of galaxies. Using the average of its distance estimates (about 13 million light years), its apparent size of 13.2 by 5.4 arcmin suggests that it is about 50 thousand light years across. Despite its large apparent and physical size, its scattered and diffuse appearance has led to its being called a "dwarf" galaxy. A years-long VLA study of radio radiation emitted by cold hydrogen gas in IC 2574 has enabled the creation of remarkably detailed images, and similarly detailed studies of the motions of gas and stars within the galaxy. Those motions show that most of the galaxy's mass is not in the form of visible stars and clouds of gas, but in the "dark matter" that pervades all known galaxies and clusters of galaxies.
Above, a 15 arcmin wide DSS image of IC 2574Below, a THINGS (The HI Nearby Galaxy Survey) image of the galaxy uses blue to show radio radiation from cold atomic hydrogen gas (the HI in "THINGS"), orange to show infrared radiation from old (lower Main Sequence) stars, and purple to show X-radiation from hot, bright young (upper Main Sequence) stars (Image Credits: AUI, NSF, Spitzer, GALEX, Walter et al, NRAO/VLA)
IC 2575 (= PGC 30586)
Discovered (May 1, 1900) by DeLisle Stewart (343)
A magnitude 15.1 spiral galaxy (type S??) in Antlia (RA 10 25 24.0, Dec -32 38 10)
Apparent size 0.7 by 0.5 arcmin?
IC 2576 (= PGC 30634)
Discovered (May 1, 1900) by DeLisle Stewart (344)
A magnitude 14.0 spiral galaxy (type Sbc??) in Antlia (RA 10 25 58.9, Dec -32 54 13)
Apparent size 0.8 by 0.7 arcmin?
IC 2577 (= PGC 30797)
Discovered (May 12, 1896) by Stephane Javelle (1157)
A magnitude 15.1 spiral galaxy (type Sb??) in Leo Minor (RA 10 28 01.4, Dec +32 45 48)
Apparent size 0.6 by 0.4 arcmin?
IC 2578 (= PGC 30753)
Discovered (May 1, 1900) by DeLisle Stewart (345)
A magnitude 14.2 spiral galaxy (type Sc??) in Antlia (RA 10 27 22.7, Dec -33 52 42)
Apparent size 1.5 by 0.3 arcmin?
IC 2579 (= NGC 3251 = PGC 30892)
Discovered (Feb 19, 1862) by Heinrich d'Arrest (and later listed as NGC 3251)
Discovered (Apr 2, 1900) by Stephane Javelle (1158) (and later listed as IC 2579)
A magnitude 13.4 spiral galaxy (type SBc??) in Leo (RA 10 29 16.5, Dec +26 05 56)
This entry will primarily contain historical information; for anything else see NGC 3251.
IC 2580 (= PGC 30814)
Discovered (May 1, 1900) by DeLisle Stewart (346)
A magnitude 12.5 spiral galaxy (type SBc??) in Antlia (RA 10 28 17.7, Dec -31 31 04)
Apparent size 1.9 by 1.7 arcmin?
IC 2581 (= OCL 811)
Discovered (May 10, 1893) by Edward Pickering
A magnitude 4.3 open cluster (type I3m) in Carina (RA 10 27 26.1, Dec -57 37 32)
Apparent size 5.0 arcmin?
IC 2582 (= PGC 30880)
Discovered (May 1, 1900) by DeLisle Stewart (347)
A magnitude 12.9 spiral galaxy (type SBc??) in Antlia (RA 10 29 11.2, Dec -30 20 34)
Apparent size 1.4 by 1.3 arcmin?
IC 2583 (= PGC 31033)
Discovered (Apr 2, 1900) by Stephane Javelle (1159)
A magnitude 14.7 elliptical galaxy (type E4??) in Leo (RA 10 31 10.5, Dec +26 03 17)
Apparent size 0.8 by 0.5 arcmin?
IC 2584 (= PGC 30938)
Discovered (May 1, 1900) by DeLisle Stewart (348)
A magnitude 12.7 lenticular galaxy (type S0??) in Antlia (RA 10 29 51.4, Dec -34 54 42)
Apparent size 1.5 by 0.3 arcmin?
IC 2585 (= NGC 3271 = PGC 30988)
Discovered (May 1, 1834) by John Herschel (and later listed as NGC 3271)
Discovered (May 1, 1900) by DeLisle Stewart (349) (and later listed as IC 2585)
A magnitude 11.8 lenticular galaxy (type SB0??) in Antlia (RA 10 30 26.5, Dec -35 21 36)
This entry will primarily contain historical information; for anything else see NGC 3271.
IC 2586 (= PGC 31025)
Discovered (Jan 1, 1898) by Lewis Swift (XI-109)
A magnitude 12.5 elliptical galaxy (type E4??) in Hydra (RA 10 31 02.3, Dec -28 43 01)
Apparent size 0.9 by 0.5 arcmin?
IC 2587 (= PGC 31020)
Discovered (May 1, 1900) by DeLisle Stewart (350)
A magnitude 12.3 lenticular galaxy (type E/SB0??) in Antlia (RA 10 30 59.5, Dec -34 33 46)
Apparent size 2.0 by 1.5 arcmin?
IC 2588 (= PGC 31088)
Discovered (Jan 1, 1898) by Lewis Swift (XI-110)
A magnitude 12.7 spiral galaxy (type SBa??) in Antlia (RA 10 31 50.1, Dec -30 23 02)
Apparent size 1.4 by 1.2 arcmin?
IC 2589 (= PGC 31126)
Discovered (Feb 15, 1898) by Lewis Swift (XI-111)
A magnitude 13.4 spiral galaxy (type Sbc??) in Hydra (RA 10 32 20.7, Dec -24 02 14)
Apparent size 0.9 by 0.6 arcmin?
IC 2590 (= PGC 31429)
Discovered (May 28, 1903) by Stephane Javelle (1160)
A magnitude 13.3 lenticular galaxy (type S0??) in Leo (RA 10 36 16.5, Dec +26 57 46)
Apparent size 1.1 by 1.1 arcmin?
IC 2591 (= PGC 31474)
Discovered (May 14, 1903) by Stephane Javelle (1161)
A magnitude 13.5 spiral galaxy (type SBc??) in Leo Minor (RA 10 36 38.6, Dec +35 03 12)
Apparent size 1.2 by 0.7 arcmin?
IC 2592 (= NGC 3366 = PGC 31335)
Discovered (Mar 15, 1836) by John Herschel (and later listed as NGC 3366)
Discovered (1899) by DeLisle Stewart (351) (and later listed as IC 2592)
A magnitude 11.3 spiral galaxy (type SBb??) in Vela (RA 10 35 08.1, Dec -43 41 37)
This entry will primarily contain historical information; for anything else see NGC 3366.
IC 2593 (= PGC 155439)
Discovered (Apr 10, 1899) by Herbert Howe (4)
A magnitude 15.0 spiral galaxy (type S??) in Hydra (RA 10 36 15.9, Dec -12 43 31)
Apparent size 0.4 by 0.3 arcmin?
IC 2594 (= PGC 31405)
Discovered (Feb 15, 1898) by Lewis Swift (XI-112)
A magnitude 12.4 lenticular galaxy (type E/S0??) in Hydra (RA 10 36 04.2, Dec -24 19 22)
Apparent size 1.4 by 1.4 arcmin?
IC 2595
Recorded (Feb 22, 1898) by Lewis Swift (XI-113)
A lost or nonexistent object in Sextans (RA 10 37 33.0, Dec -11 07 00)
IC 2596 (= PGC 31265)
Discovered (May 6, 1904) by Royal Frost (787)
A magnitude 13.8 spiral galaxy (type SBab??) in Carina (RA 10 34 12.2, Dec -73 14 24)
Apparent size 1.2 by 0.8 arcmin?
IC 2597 (= PGC 31586 = HCG 48A)
and with PGC 31588, PGC 31577 and PGC 31580 = Hickson Compact Group 48
Discovered (Feb 14, 1898) by Lewis Swift (XI-114)
A magnitude 11.8 elliptical galaxy (type E3?) in Hydra (RA 10 37 47.3, Dec -27 04 51)
Apparent size 2.2 by 1.6 arcmin. HCG 48 is not actually a single grouping, but a pair of pairs. IC 2597 and PGC 31588 are about 110 million light years away, while PGC 31577 and PGC 31580 are about 200 million light years distant.
Above, a 3 arcmin wide DSS image of IC 2597
Below, a 6 arcmin wide DSS image of HCG 48 (IC 2597, PGC 31588, PGC 31577 and PGC 31580)
Below, a 12 arcmin wide DSS image centered on IC 2597, also showing the other members of HCG 48
PGC 31588 (= HCG 48B)
and with IC 2597, PGC 31577 and PGC 31580 = Hickson Compact Group 48
Not an IC object but listed here since part of HCG 48 with IC 2597
A magnitude 14.2 spiral galaxy (type SBa? pec) in Hydra (RA 10 37 49.6, Dec -27 07 16)
Apparent size 0.75 by 0.7 arcmin.
Above, a 1.2 arcmin wide DSS image of PGC 31588 (see IC 2597 for additional images)
PGC 31577 (= HCG 48C)
and with IC 2597, PGC 31588 and PGC 31580 = Hickson Compact Group 48
Not an IC object but listed here since part of HCG 48 with IC 2597
A magnitude 16(?) lenticular galaxy (type S0/a?) in Hydra (RA 10 37 40.5, Dec -27 03 28)
Apparent size 0.4 by 0.15 arcmin.
Above, a 1.5 arcmin wide DSS image of PGC 31577 and PGC 31580 (see IC 2597 for additional images)
PGC 31580 (= HCG 48D)
and with IC 2597, PGC 31588 and PGC 31577 = Hickson Compact Group 48
Not an IC object but listed here since part of HCG 48 with IC 2597
A magnitude 16(?) elliptical galaxy (type E0?) in Hydra (RA 10 37 41.6, Dec -27 02 39)
IC 2598 (= PGC 31713)
Discovered (May 28, 1903) by Stephane Javelle (1162)
A magnitude 14.1 spiral galaxy (type Sa? pec) in Leo Minor (RA 10 39 42.2, Dec +26 43 39)
Apparent size 0.55 by 0.25 arcmin.
Above, a 1.2 arcmin wide SDSS image of IC 2598
Below, a 12 arcmin wide SDSS image centered on the galaxy
IC 2599
Discovered (May 10, 1893) by Edward Pickering
An emission nebula in Carina (RA 10 37 27.0, Dec -58 44 00)
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