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Page last updated Sep 5, 2023 (Added Caldwell & other IDs to NGC 5139)
Page last updated Aug 23, 2023 (Added Caldwell & other IDs to NGC 5128, and corrected a caption)
Page last update Sep 3, 2021 (Some minor modifications of de Vaucouleurs entries)
Last prior update July 19, 2021
Updated Corwin database
Updated and completed NGC 5122
NEXT: Update Steinicke databases
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NGC 5100 (= NGC 5106?)
(= PGC 46599 = CGCG 072-050 = MCG +02-34-009)
(and with PGC 46603 = UGC 8389)
Discovered (Jan 23, 1784) by William Herschel (and later listed as NGC 5106)
Discovered (Mar 22, 1865) by Albert Marth (255) (and later listed as NGC 5100)
A magnitude > spiral galaxy (see Physical Information) in Virgo (RA 13 20 59.6, Dec +08 58 42)
Historical Identification:
Physical Information: Steinicke lists this as a binuclear object, consisting of a magnitude 13.9 spiral galaxy (type S?) 0.1 arcsec to the south of a 14.3 magnitude spiral galaxy (type S?), each about 0.8 by 0.45 arcmin in size.
NED 14.84(g?), 1.0 x .7 arcmin, 3K Vr 9877 km/sec, z 0.032946; LEDA Sb?
PGC 46603)
Not an NGC object but listed here as a probable companion of NGC 5100
A magnitude ? spiral galaxy (type SBbc?) in Virgo? (RA 13 20 57.6, Dec +08 59 08)
Physical Information:
LEDA B 17.0; NED Sc, 15.3(g?), .8 x .5 arcmin, 3K Vr 10032 km/sec, z 0.033463024
NGC 5101 (= PGC 46661)
Discovered (Mar 28, 1786) by William Herschel
A magnitude 10.7 lenticular galaxy (type SB0/a?) in Hydra (RA 13 21 46.2, Dec -27 25 50)
Historical Identification:
Physical Information: Apparent size 5.4 by 4.6 arcmin?
Use By The de Vaucouleurs Atlas: NGC 5101 is used by the de Vaucouleurs Atlas of Galaxies as an example of type (R 1R 2')SB( rs)a.
NGC 5102 (= PGC 46674)
Discovered (Apr 21, 1835) by John Herschel
A magnitude 9.6 lenticular galaxy (type E/S0?) in Centaurus (RA 13 21 57.6, Dec -36 37 48)
Historical Identification:
Physical Information: Apparent size 8.6 by 2.7 arcmin(?).
Use By The de Vaucouleurs Atlas: NGC 5102 is used by the de Vaucouleurs Atlas of Galaxies as an example of type SA0 -.
Above, an 8 arcmin wide closeup of NGC 5102 (the glare is from 3rd-magnitude ι Centauri)
Below, a 12 arcmin wide region centered on the galaxy
NGC 5103 (= PGC 46552)
Discovered (Apr 9, 1787) by William Herschel
A magnitude 12.7 spiral galaxy (type S?) in Canes Venatici (RA 13 20 30.1, Dec +43 05 02)
Historical Identification:
Physical Information: Historical Identification:
Physical Information: Apparent size 1.4 by 1.0 arcmin?
NGC 5104 (= PGC 46633)
Discovered (Apr 12, 1864) by Albert Marth (256)
A magnitude 13.7 spiral galaxy (type Sa?) in Virgo (RA 13 21 23.1, Dec +00 20 33)
Historical Identification:
Physical Information: Apparent size 1.2 by 0.4 arcmin?
NGC 5105 (= PGC 46664)
Discovered (Jun 3, 1886) by Lewis Swift (3-70)
A magnitude 11.8 spiral galaxy (type SBc?) in Virgo (RA 13 21 49.1, Dec -13 12 24)
Historical Identification:
Physical Information: Apparent size 2.0 by 1.5 arcmin?
NGC 5106 (= NGC 5100?)
(= PGC 46599 etc)
Discovered (Jan 23, 1784) by William Herschel (and later listed as NGC 5106)
Discovered (Mar 22, 1865) by Albert Marth (and later listed as NGC 5100)
A magnitude (13.9 + 14.3?) spiral galaxy (type S? pec) in Virgo (RA 13 20 59.6, Dec +08 58 42)
Historical Identification:
Physical Information: Given the duplicate entry, see NGC 5100 for anything else.
NGC 5107 (= PGC 46636)
Discovered (Mar 17, 1787) by William Herschel
A magnitude 13.1 spiral galaxy (type SBcd?) in Canes Venatici (RA 13 21 24.7, Dec +38 32 15)
Apparent size 1.7 by 0.5 arcmin?
NGC 5108 (= PGC 46774)
Discovered (Jun 3, 1836) by John Herschel
A magnitude 13.9 spiral galaxy (type SBbc?) in Centaurus (RA 13 23 18.8, Dec -32 20 32)
Historical Identification:
Physical Information: Historical Identification:
Physical Information: Apparent size 1.2 by 0.3 arcmin?
NGC 5109 (= NGC 5113 = PGC 46589)
Discovered (Mar 17, 1790) by William Herschel (and later listed as NGC 5109)
Discovered (Apr 24, 1789) by William Herschel (and later listed as NGC 5113)
A magnitude 12.9 spiral galaxy (type Sbc?) in Ursa Major (RA 13 20 52.3, Dec +57 38 40)
Historical Identification:
Physical Information: Apparent size 1.7 by 0.5 arcmin?
NGC 5110 (= NGC 5111 = PGC 46737)
Discovered (May 11, 1784) by William Herschel (and later listed as NGC 5111)
Discovered (Jun 3, 1886) by Lewis Swift (3-71) (and later listed as NGC 5110)
A magnitude 13.3 lenticular galaxy (type E/S0?) in Virgo (RA 13 22 56.5, Dec -12 57 53)
Historical Identification:
Physical Information: Apparent size 2.0 by 1.7 arcmin?
NGC 5111 (= NGC 5110 = PGC 46737)
Discovered (May 11, 1784) by William Herschel (and later listed as NGC 5111)
Discovered (Jun 3, 1886) by Lewis Swift (and later listed as NGC 5110)
A magnitude 13.3 lenticular galaxy (type E/S0?) in Virgo (RA 13 22 56.5, Dec -12 57 53)
Historical Identification:
Physical Information: Given the dupliate entry, see NGC 5110 for anything else.
NGC 5112 (= PGC 46671)
Discovered (Mar 17, 1787) by William Herschel
A magnitude 12.1 spiral galaxy (type SBc?) in Canes Venatici (RA 13 21 56.6, Dec +38 44 04)
Historical Identification:
Physical Information: Apparent size 4.0 by 2.9 arcmin?
NGC 5113 (= NGC 5109 = PGC 46589)
Discovered (Mar 17, 1790) by William Herschel (and later listed as NGC 5109)
Discovered (Apr 24, 1789) by William Herschel (and later listed as NGC 5113)
A magnitude 12.9 spiral galaxy (type Sbc?) in Ursa Major (RA 13 20 52.3, Dec +57 38 40)
Historical Identification:
Physical Information: Given the duplicate entry, see NGC 5109 for anything else.
NGC 5114 (= PGC 46828)
Discovered (Jun 3, 1836) by John Herschel
A magnitude 12.4 lenticular galaxy (type E/SB0?) in Centaurus (RA 13 24 01.7, Dec -32 20 38)
Apparent size 1.8 by 1.0 arcmin?
NGC 5115 (= PGC 46754)
Discovered (Mar 25, 1887) by Lewis Swift (6-54)
A magnitude 13.7 spiral galaxy (type SBc?) in Virgo (RA 13 23 00.4, Dec +13 57 02)
Historical Identification:
Physical Information: Historical Identification:
Physical Information: Apparent size 1.4 by 0.7 arcmin?
NGC 5116 (= PGC 46744)
Discovered (Apr 11, 1785) by William Herschel
A magnitude 12.7 spiral galaxy (type SBc?) in Coma Berenices (RA 13 22 55.6, Dec +26 58 50)
Historical Identification:
Physical Information: Apparent size 2.0 by 0.7 arcmin?
NGC 5117 (= PGC 46746)
Discovered (Mar 30, 1827) by John Herschel
A magnitude 13.5 spiral galaxy (type SBc?) in Canes Venatici (RA 13 22 56.5, Dec +28 18 59)
Historical Identification:
Physical Information: Apparent size 2.2 by 1.0 arcmin?
NGC 5118 (= IC 4236)
(= PGC 46782 = UGC 8413 = CGCG 044-078 = MCG +01-34-019)
Discovered (May 12, 1793) by William Herschel (and later listed as NGC 5118)
Discovered (May 22, 1897) by Lewis Swift (and later listed as IC 4236)
A magnitude 13.7 spiral galaxy (type SBc?) in Virgo (RA 13 23 27.4, Dec +06 23 33)
Historical Identification:
Physical Information: Apparent size 0.8 by 0.7 arcmin?
LEDA SABc, B 14.4; NED Scd? 14.4(g?), 3K Vr 7248 km/sec, z 0.024176
PGC 46795
(= CGCG 044-079)
Not an NGC object but listed here as an apparent companion of NGC 5118
A magnitude ? galaxy (type ?) in Virgo? (RA 13 23 36.8, Dec +06 24 25)
Physical Information:
LEDA Sbc?, B 16.2; NED 16.1(g), .49 x .38 arcmin, 3K Vr 12181 km/sec, z 0.040630336; a background object, so just an "optical double"
NGC 5119 (= PGC 46826)
Discovered (May 6, 1836) by John Herschel
A magnitude 13.0 lenticular galaxy (type S0?) in Virgo (RA 13 24 00.3, Dec -12 16 35)
Historical Identification:
Physical Information: Apparent size 1.3 by 0.4 arcmin?
NGC 5120 (= OCL 899)
Discovered (Jun 16, 1835) by John Herschel
A magnitude 12.5(?) group of stars in Centaurus (RA 13 25 40.0, Dec -63 27 18)
Historical Identification:
Physical Information: Apparent size 3.0 arcmin?
NGC 5121 (= PGC 46896)
Discovered (Jun 26, 1834) by John Herschel
A magnitude 10.6 spiral galaxy (type Sa?) in Centaurus (RA 13 24 45.6, Dec -37 40 56)
Historical Identification:
Physical Information: Apparent size 1.9 by 1.5 arcmin?
Use By The de Vaucouleurs Atlas: NGC 5121 is used by the de Vaucouleurs Atlas of Galaxies as an example of type (R')SA(rl)a.
PGC 46960 (= "NGC 5121A")
Not an NGC object but sometimes called NGC 5121A since in general area of NGC 5121
A magnitude 15.1 spiral galaxy (type SBd?) in Centaurus (RA 13 25 32.7, Dec -37 22 41)
Historical Identification:
Physical Information: Apparent size 1.7 by 0.5 arcmin?
NGC 5122
(= PGC 46848 = MCG -02-34-043)
Discovered (Apr 24, 1887) by Lewis Swift
A magnitude 13.4 lenticular galaxy (type S0/a? pec) in Virgo (RA 13 24 14.9, Dec -10 39 15)
Historical Identification: Per Dreyer, NGC 5122 (Swift list VI (#56), 1860 RA 13 16 56, NPD -09 54.7) is "very faint, small, round." The position precesses to RA 13 24 18.0, Dec -10 38 37, just under 1 arcmin northeast of the galaxy listed above, the description is reasonable and there is nothing else nearby, so the identification is certain.
Physical Information: Based on a recessional velocity relative to the Cosmic Microwave Background radiation of 3130 km/sec (and H0 = 70 km/sec/Mpc), NGC 5122 is about 145 million light-years away. Given that and its apparent size of about 1.0 by 0.35 arcmin for the galaxy and about 2.15 arcmin for the polar jets (from the images below), the galaxy is about 40 to 45 thousand light-years across, while the polar jets span about 90 thousand light-years. The galaxy has a strong emission-line spectrum, indicative of some source of superheated gases, and polar jets, indicative of a supermassive black hole at its center, whose accretion disk may well be the cause of the superheated gas. It is the emission-line spectrum and polar jets that are the cause of its classification, which would otherwise be S0, as there is otherwise nothing unusual in the best images currently available.
Above, a 12 arcmin wide DSS image centered on NGC 5122 (glare from magnitude 1.0 α Vir mostly removed)
Below, a 3 arcmin wide PanSTARRS image of the galaxy and its polar jets
Below, the 3 arcmin wide image above with a DECaLS/DR3 overlay to better show the polar jets
(Processing and combination of DECaLS overlay and PanSTARRS background by Courtney Seligman)
NGC 5123 (= PGC 46767)
Discovered (Apr 9, 1787) by William Herschel
A magnitude 12.8 spiral galaxy (type Sc?) in Canes Venatici (RA 13 23 10.5, Dec +43 05 10)
Historical Identification:
Physical Information: Apparent size 1.3 by 1.1 arcmin?
NGC 5124 (= IC 4233)
(= PGC 46902)
Discovered (May 5, 1834) by John Herschel (and later listed as NGC 5124)
Discovered (Dec 31, 1897) by Lewis Swift (and later listed as IC 4233)
A magnitude 12.1 elliptical galaxy (type E6?) in Centaurus (RA 13 24 50.3, Dec -30 18 28)
Historical Identification:
Physical Information: Apparent size 2.2 by 0.7 arcmin?
NGC 5125
(= PGC 46827 = UGC 8421 = CGCG 072-062 = MCG +02-34-011)
Discovered (Jan 18, 1828) by John Herschel
A magnitude 12.4 spiral galaxy (type Sb?) in Virgo (RA 13 24 00.7, Dec +09 42 37)
Historical Identification:
Physical Information: Apparent size 1.7 by 1.3 arcmin?
SDSS J132401.70+094246.2
Not an NGC object but listed here as an apparent companion of or knot in NGC 5125
A magnitude ? galaxy (or knot in NGC 5125) (type ?) in Virgo (RA 13 24 01.7, Dec +09 42 46)
Physical Information:
Not listed in LEDA. NED 17.8g, .08 arcmin, nothing else available. Definitely extragalaactic, but no information capable of distinguishing between a separate object or a knot in one of NGC 5125's spiral arms.
NGC 5126 (= PGC 46910)
Discovered (May 6, 1834) by John Herschel
A magnitude 13.1 lenticular galaxy (type S(s)0/a? pec) in Centaurus (RA 13 24 53.6, Dec -30 20 01)
Historical Identification:
Physical Information: Apparent size 1.4 by 0.4 arcmin? NED 3K 5077 km/sec
("PGC 3807569")
(= 2MASXJ13245305-3020279)
Not an NGC object but listed here as a probable companion of NGC 5126
A magnitude ? galaxy (type S0?) in Centaurus? (RA 13 24 53.0, Dec -30 20 29)
Note About PGC Designation: HyperLEDA assigns a PGC designation to this object, but a search of the database for that designation returns no result, hence its being placed in quotes. To find the object in either HyperLEDA or NED, search for its 2MASXJ designation.
Physical Information:
LEDA nil; NED S0, 3K Vr 4951 km/sec; Vr close enough that a probable companion
PGC 46903
Not an NGC object but listed here as a possible companion of NGC 5126
A magnitude ? galaxy (type ?) in Centaurus? (RA 13 24 50.7, Dec -30 19 50)
Physical Information:
LEDA B 17.3; NED #, 17.3g?, .5 x .3 arcmin, 3K Vr 4721 km/sec; Vr close enough that it could be a companion, but not quite as likely as the one above
NGC 5127 (= PGC 46809)
Discovered (Mar 13, 1785) by William Herschel
A magnitude 11.9 elliptical galaxy (type E2?) in Canes Venatici (RA 13 23 45.0, Dec +31 33 57)
Historical Identification:
Physical Information: Apparent size 2.8 by 2.2 arcmin? NED 3K Vr 5092 km/sec
PGC 214104
Not an NGC object but listed here as an apparent companion of NGC 5127
A magnitude ? galaxy (type E5?) in Canes Venatici? (aRA 13 23 42.8, Dec +31 30 56)
Physical Information:
LEDA 15.8 B; NED E5, 15.5(g?), .69 x .36 arcmin, 3K Vr 5504 km/sec; probably a background object, but perhaps not just an optical double
NGC 5128, Centaurus A
(= C77 = PGC 46957 = ESO 270-009 = MCG -07-28-001 = Arp 153)
Discovered (Apr 29, 1826) by James Dunlop (482)
A magnitude 6.8 lenticular galaxy (type S0? pec) in Centaurus (RA 13 25 27.6, Dec -43 01 09)
Historical Identification:
Physical Information: Apparent size 25.7 by 20.0 arcmin? Used by the Arp Atlas as an example of a disturbed galaxy with interior absorption. (In the process of devouring a large spiral galaxy)
Above, a 24 arcmin wide "closeup" of Centaurus A
Below, a wide-field view of the region (Image Credits: Adam Block/AURA/NSF/NOAO)
Below, a HST image of the nucleus of Centaurus A (Image Credits: E.J. Schreier (STScI), and NASA)
Below, a Spitzer infrared image of the nucleus of the galaxy ((SSC/Caltech) et al., JPL, Caltech, NASA)
Below, a multispectral image of radio lobes due to (black hole?) jets
(Image Credit: (Optical) ESO/WFI; (Radio) MPIfR/ESO/APEX/A.Weiss et al.; (X-ray) NASA/CXC/CfA/R.Kraft et al.)
NGC 5129 (= PGC 46836)
Discovered (Mar 19, 1787) by William Herschel
A magnitude 12.1 elliptical galaxy (type E2?) in Virgo (RA 13 24 10.0, Dec +13 58 36)
Historical Identification:
Physical Information:
NGC 5130 (= PGC 46866)
Discovered (1886) by Ormond Stone (I-198)
A magnitude 13.4 lenticular galaxy (type S0?) in Virgo (RA 13 24 27.2, Dec -10 12 37)
Historical Identification:
Physical Information:
NGC 5131 (= PGC 46819)
Discovered (Apr 24, 1865) by Heinrich d'Arrest
A magnitude 13.5 spiral galaxy (type Sa?) in Canes Venatici (RA 13 23 56.9, Dec +30 59 17)
Historical Identification:
Physical Information:
NGC 5132 (= PGC 46868)
Discovered (Apr 8, 1866) by Heinrich d'Arrest
A magnitude 13.2 spiral galaxy (type (R)SBa?) in Virgo (RA 13 24 28.9, Dec +14 05 33)
Historical Identification:
Physical Information:
NGC 5133 (= PGC 46909)
Discovered (Apr 23, 1881) by douard Stephan (11a-19)
A magnitude 13.7 lenticular galaxy (type E/S0?) in Virgo (RA 13 24 52.9, Dec -04 04 55)
Historical Identification:
Physical Information:
NGC 5134 (= PGC 46938)
Discovered (Mar 10, 1785) by William Herschel
A magnitude 11.3 spiral galaxy (type SBb?) in Virgo (RA 13 25 18.5, Dec -21 08 03)
Historical Identification:
Physical Information:
NGC 5135 (= PGC 46974)
Discovered (May 8, 1834) by John Herschel
A magnitude 12.1 spiral galaxy (type SBab?) in Hydra (RA 13 25 44.0, Dec -29 50 01)
Historical Identification:
Physical Information:
NGC 5136 (= PGC 46905 = IC 888)
Discovered (Apr 12, 1784) by William Herschel (and later listed as NGC 5136)
Discovered (May 3, 1889) by Lewis Swift (and later listed as IC 888)
A magnitude 14.0 elliptical galaxy (type E1?) in Virgo (RA 13 24 51.4, Dec +13 44 16)
Historical Identification:
Physical Information:
NGC 5137 (= PGC 46907)
Discovered (Apr 17, 1887) by Lewis Swift (6-57)
A magnitude 15.1 spiral galaxy (type S?) in Virgo (RA 13 24 52.5, Dec +14 04 38)
Historical Identification:
Physical Information:
NGC 5138 (= OCL 902)
Discovered (May 26, 1826) by James Dunlop (312)
A magnitude 7.6 open cluster (type II2p) in Centaurus (RA 13 27 02.0, Dec -59 01 48)
Historical Identification:
Physical Information:
A recent paper makes a convincing argument for a distance of just under 18 thousand light-years
NGC 5139, ω Centauri
(= GCL 24 = C80 = PGC 2802650 = ESO 270-SC011),
Recorded (150 C.E.) by Ptolemy (as a star)
Named ω Centauri (1603) by Johann Bayer
Discovered (1677) by Edmond Halley (as a non-stellar object)
Also recorded (1746) by Philippe de Ch seaux
Also observed (1751) by Nicolas Lacaille
Also observed (May 7, 1826) by James Dunlop (and listed as a globular cluster)
Also observed (Apr 20, 1836) by John Herschel
A magnitude 5.3 globular cluster (type VIII) in Centaurus (RA 13 26 47.2, Dec -47 28 46)
Historical Identification: Per Dreyer, NGC 5139 (= GC 3531 = JH 3504, Halley, Lacaille I.5, Dunlop 440, 1860 RA 13 18 24, NPD 136 34.8) is "a magnificent object (!!!), a globular cluster, ω Centauri". The second IC adds "NPD is 136 44.8 (error of reduction in the GC). The corrected position precesses to RA 13 26 45.3, Dec -47 28 35, nearly dead center on this most spectacular of all globular clusters, but given the use of its name, the identification would be certain even if the position were considerably in error.
Physical Information: Bright enough to appear as a fuzzy star to the unaided eye in a dark southern sky, Omega Centauri is the largest, most massive and brightest globular cluster in our galaxy. For reasons discussed below, it has even been suggested that it is not a true globular cluster, but the core of a dwarf galaxy captured by our own galaxy, and stripped of its outer regions. The cluster is about 15 thousand light-years from Earth, yet still appears larger than the full moon (its outer regions covering a region nearly 40 arcmin across), and packs over ten million stars into its 150 light-year diameter. Most of the still visible stars are low-mass, faint stars, as even stars like the Sun would be getting close to the end of their lives after the nearly twelve billion years since the cluster formed. Still, the cluster does contain a number of much brighter "red giants" (particularly notable in the HST image below), the result of stars at the end of their lives swelling to planetary orbital sizes before collapsing to faint white dwarfs (more massive stars could become neutron stars or black holes, but all such stars which once filled the cluster with their brilliant light must have died many billions of years ago). It also has a substantial number of "blue stragglers", relatively bright, hot stars with about twice the mass of their far more numerous companions, created by the collision of two stars in the dense central parts of the cluster (in regions such as the Solar neighborhood, such collisions are impossible, because stars are so small compared to their separations; but in the cores of globular clusters, where tens of thousands of stars occupy the space normally occupied by only one or two stars, collisions are hundreds of millions of times more likely). The cluster is unique in several respects, one of which is its rotational velocity. Most globular clusters have no net rotation, the stars they contain simply moving around in random directions, under the influence of the overall gravity of the cluster and their nearest neighbors; but Omega Centauri is rotating at about 8 km/sec, and should complete one rotation every 15 to 20 million years. It also contains stars of varying chemical composition, suggesting that some were formed earlier, when the Universe contained virtually nothing but hydrogen and helium, and others later, after the death of earlier generations of stars seeded the space between them with the ashes of their destruction. This is consistent with the hypothesis that the cluster is a captured dwarf galaxy, in which star formation went on for some time (probably in several bursts of star formation over a period of two billion years); the more normal situation for globular clusters is for virtually all of the stars to form in a relatively short time, and have nearly identical chemical composition.
Above, a one degree wide DSS image centered on NGC 5139
Below a half degree wide view of the cluster (Image Credit ESO)
 Below, a roughly 2.7 arcmin wide image of the center of ω Centauri, where stars are packed ten thousand times more densely than in the Solar neighborhood. (North is to the upper right) (Image Credit Adrienne Cool (SFSU) et al., Hubble Heritage Team (STScI/AURA), NASA)
NGC 5140 (= PGC 47031)
Discovered (May 1, 1834) by John Herschel
A magnitude 11.8 lenticular galaxy (type E/SB0?) in Centaurus (RA 13 26 21.7, Dec -33 52 06)
Historical Identification:
Physical Information:
NGC 5141 (= PGC 46906)
Discovered (May 1, 1785) by William Herschel
A magnitude 12.8 lenticular galaxy (type S0?) in Canes Venatici (RA 13 24 51.4, Dec +36 22 43)
Historical Identification:
Physical Information:
NGC 5142 (= PGC 46919)
Discovered (May 1, 1785) by William Herschel
A magnitude 13.3 lenticular galaxy (type S0?) in Canes Venatici (RA 13 25 01.1, Dec +36 23 58)
Historical Identification:
Physical Information:
NGC 5143 (= PGC 46918)
Discovered (Apr 17, 1855) by R. J. Mitchell
A magnitude 15.8 spiral galaxy (type SBd?) in Canes Venatici (RA 13 25 01.2, Dec +36 26 14)
Historical Identification:
Physical Information:
NGC 5144 (= PGC 46742)
Discovered (May 6, 1791) by William Herschel
A magnitude 13.1 galaxy (type Sc? pec) in Ursa Minor (RA 13 22 54.1, Dec +70 30 53)
Historical Identification:
Physical Information:
PGC 200298 (= "NGC 5144B")
Not an NGC object but listed here since sometimes called NGC 5144B
A magnitude 15.0 object (part of NGC 5144) in Ursa Minor (RA 13 22 53.5, Dec +70 30 36)
Physical Information: UGC lists this as a superimposed companion of NGC 5144, but given the complex structure of NGC 5144 it is probably just a star-forming region in that galaxy.
NGC 5145 (= PGC 46934)
Discovered (Apr 9, 1787) by William Herschel
A magnitude 12.6 spiral galaxy (type Sb?) in Canes Venatici (RA 13 25 13.9, Dec +43 16 02)
Historical Identification:
Physical Information:
NGC 5146 (= PGC 47055)
Discovered (May 9, 1784) by William Herschel
A magnitude 12.6 lenticular galaxy (type E/S0?) in Virgo (RA 13 26 37.5, Dec -12 19 26)
Historical Identification:
Physical Information:
NGC 5147 (= PGC 47027)
Discovered (Jan 24, 1784) by William Herschel
A magnitude 11.8 spiral galaxy (type SBd?) in Virgo (RA 13 26 19.7, Dec +02 06 03)
Historical Identification:
Physical Information:
NGC 5148 (= PGC 47060)
Discovered (Apr 30, 1864) by Albert Marth (257)
A magnitude 14.2 spiral galaxy (type SBcd?) in Virgo (RA 13 26 38.8, Dec +02 18 49)
Historical Identification:
Physical Information:
NGC 5149 (= PGC 47011)
Discovered (May 1, 1785) by William Herschel
A magnitude 12.9 spiral galaxy (type SBbc?) in Canes Venatici (RA 13 26 09.1, Dec +35 56 04)
Historical Identification:
Physical Information: Based on a recessional velocity of 5650 km/sec, NGC 5149 is about 265 million light-years away. Given that and its apparent size of 1.6 by 0.9 arcmin, it is about 120 thousand light-years across. NGC 5149 may be a companion of its nearest apparent neighbor, NGC 5154.
Above, a 2.4 arcmin wide closeup of NGC 5149
Below, a 12 arcmin wide region centered on the galaxy, also showing NGC 5154
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