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4700, 4701, 4702, 4703, 4704, 4705, 4706, 4707, 4708, 4709, 4710, 4711, 4712, 4713, 4714, 4715, 4716,
4717, 4718, 4719, 4720, 4721, 4722, 4723, 4724, 4725, 4726, 4727, 4728, 4729, 4730, 4731, 4732, 4733,
4734, 4735, 4736, 4737, 4738, 4739, 4740, 4741, 4742, 4743, 4744, 4745, 4746, 4747, 4748, 4749
Page last updated Jul 26, 2011
WORKING: Add positions/physical data (per Steinicke)
NGC 4700
Discovered (Mar 25, 1786) by William Herschel
NGC 4701
Discovered (Apr 30, 1786) by William Herschel
NGC 4702 (= NGC 4692 = PGC 43200)
Discovered (Apr 11, 1785) by William Herschel (and later listed as NGC 4692)
Discovered (Mar 4, 1867) by Heinrich d'Arrest (and later listed as NGC 4702)
A 13th-magnitude elliptical galaxy (type E0?) in Coma Berenices (RA 12 47 55.2, Dec +27 13 20)
The second IC added (per W. (Wolf?) list III) "RA 12 42 11, NPD 62 03.7, pretty faint, small, very irregular figure".
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NGC 4703
Discovered (Mar 3, 1786) by William Herschel
NGC 4704
Discovered (Apr 9, 1787) by William Herschel
NGC 4705
Discovered (Feb 22, 1787) by William Herschel
NGC 4706
Discovered (Jun 5, 1834) by John Herschel
NGC 4707
Discovered (Apr 26, 1789) by William Herschel
NGC 4708
Discovered (Mar 11, 1788) by William Herschel
NGC 4709
Discovered (May 7, 1826) by James Dunlop (511)
NGC 4710
Discovered (Mar 21, 1784) by William Herschel
NGC 4711 (= IC 3804 = PGC 43286)
Discovered (May 1, 1785) by William Herschel (and later listed as NGC 4711)
"Rediscovered" (Mar 21, 1903) by Max Wolf (and later listed as IC 3804)
A 13th-magnitude barred spiral galaxy (type SBb) in Canes Venatici (RA 12 48 45.7, Dec +35 19 58)
Above, a 2.4 arcmin wide closeup of NGC 4711
Below, a 12 arcmin wide region centered on the galaxy
NGC 4712
Discovered (Mar 28, 1832) by John Herschel
NGC 4713
Discovered (Apr 17, 1786) by William Herschel
NGC 4714
Discovered (Mar 27, 1786) by William Herschel
NGC 4715
Discovered (May 10, 1863) by Heinrich d'Arrest
NGC 4716 (= PGC 43464)
Discovered (Apr 12, 1882) by Wilhelm Tempel (V-19)
A 13th-magnitude lenticular galaxy (type S0^0 pec) in Virgo (RA 12 50 33.1, Dec -09 27 03)
Based on a recessional velocity of 4475 km/sec, NGC 4716 is about 210 million light years away. It is thought to be in a triple with NGC 4717 and PGC 43465, in which case they would share a common distance between 210 and 220 million light years away. Given that and its apparent size of 1.0 by 0.7 arcmin, NGC 4716 is about 60 thousand light years across. |
Above, a 2.4 arcmin wide closeup of NGC 4716 and 4717
Below, a 12 arcmin wide region centered on the pair, also showing PGC 43465
NGC 4717 (= PGC 43467)
Discovered (Apr 12, 1882) by Wilhelm Tempel (V-19)
A 14th-magnitude barred spiral galaxy (type SB(rs)a pec) in Virgo (RA 12 50 34.5, Dec -09 27 46)
Based on a recessional velocity of 4675 km/sec, NGC 4717 is about 220 million light years away. It is thought to be in a triple with NGC 4716 and PGC 43465, in which case they would share a common distance between 210 and 220 million light years away. Given that and its apparent size of 1.4 by 0.5 arcmin, NGC 4717 is about 85 thousand light years across. See NGC 4716 for images.
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PGC 43465
Listed here because part of a triple system with NGC 4716 and 4717
A 14th-magnitude spiral galaxy (type Sd pec edge-on) in Virgo (RA 12 50 34.6, Dec -09 31 11)
Based on a recessional velocity of 4695 km/sec, PGC 43465 is about 220 million light years away. It is thought to be in a triple with NGC 4716 and NGC 4717, in which case they would share a common distance between 210 and 220 million light years away. Given that and its apparent size of 1.2 by 0.4 arcmin, PGC 43465 is about 75 thousand light years across.
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Above, a 2.4 arcmin wide closeup of PGC 43465 and a foreground star; see NGC 4716 for a wide-field view
NGC 4718
Discovered (Feb 19, 1830) by John Herschel
NGC 4719
Discovered (May 3, 1785) by William Herschel
NGC 4720
Discovered (Feb 22, 1787) by William Herschel
NGC 4721
Discovered (Apr 24, 1865) by Heinrich d'Arrest
NGC 4722 (= IC 3833)
Discovered (1882) by Wilhelm Tempel (V) (and later listed as NGC 4722)
Discovered (Apr 15, 1895) by Guillaume Bigourdan (and later listed as IC 3833)
A 13th-magnitude lenticular galaxy (type S0/a) in Corvus (RA 12 51 32.3, Dec -13 19 48)
The second IC notes for NGC 4722-23, "Howe has only one, RA 12 44 14, NPD 102 34.0, with an 11.5 magnitude star 4 seconds east".
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NGC 4723
Discovered (1882) by Wilhelm Tempel (V)
The second IC notes for NGC 4722-23, "Howe has only one, RA 12 44 14, NPD 102 34.0, with an 11.5 magnitude star 4 seconds east".
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NGC 4724
Discovered (Feb 8, 1785) by William Herschel
NGC 4725
Discovered (Apr 10, 1785) by William Herschel
NGC 4726
Discovered (1882) by Wilhelm Tempel (V)
The second IC lists a corrected position of RA 12 44 12, NPD 103 27.5 (no reference given). Also, a note (per Howe and Swift) states that 4726 = 4740. Perhaps that is a typographical error for 4740 = 4727?
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NGC 4727 (= NGC 4740)
Discovered (Feb 8, 1785) by William Herschel (and later listed as NGC 4727)
Discovered (Apr 27, 1887) by Lewis Swift (and later listed as NGC 4740)
A 12th-magnitude barred spiral galaxy (type SBbc) in Corvus (RA 12 50 57.2, Dec -14 19 59)
The second IC states (per Howe and Swift) that 4740 = 4726. Perhaps that is a typographical error for 4740 = 4727?
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NGC 4728
Discovered (Mar 3, 1867) by Heinrich d'Arrest
NGC 4729
Discovered (Jun 8, 1834) by John Herschel
NGC 4730
Discovered (Jun 8, 1834) by John Herschel
NGC 4731 (= PGC 43507 = PGC 1033347)
Discovered (Apr 25, 1784) by William Herschel
A 12th-magnitude spiral galaxy (type SB(s)cd) in Virgo (RA 12 51 01.0, Dec -06 23 33)
The first IC adds "William Herschel in 1784 described it as 'a little brighter middle', not 'suddenly brighter middle', as in the GC. There has apparently not been any change; it is diffused, without condensation. The RA in NGC (per John Herschel) is correct (Armagh, 2 observations)".
Part of the Virgo cluster of galaxies. Based on a recessional velocity of 1490 km/sec, NGC 4731 is about 70 million light years away, in good agreement with redshift-independent distance measurements of 45 to 85 million light years in diameter. This makes it a member of the Virgo Cluster of galaxies. Given its probable distance and its apparent size of 6.6 by 3.2 arcmins, the galaxy is about 125 thousand light years across. The distortion of NGC 4731's spiral arms is believed to be due to gravitational interaction with giant elliptical galaxy NGC 4697, shown in the widest-field image below. |
Above, an 8 arcmin wide closeup of NGC 4731
Below, a 12 arcmin wide region centered on the galaxy
Below, a 1 degree wide region centered between NGC 4731 and NGC 4697
(The view above is centered at RA 12 49 50, Dec -06 04 45)
NGC 4732
Discovered (Apr 26, 1789) by William Herschel
NGC 4733
Discovered (Mar 15, 1784) by William Herschel
NGC 4734
Discovered (Apr 7, 1828) by John Herschel
NGC 4735
Discovered (May 9, 1885) by Guillaume Bigourdan (II-56)
NGC 4736 (= M94)
Discovered (Mar 22, 1781) by Pierre Méchain
Recorded (1781?) by Charles Messier as M94
An 8th-magnitude spiral galaxy (type (R)SA(r)ab) in Canes Venatici (RA 12 50 53.1, Dec +41 07 17)The 310 km/sec recessional velocity of M94 is too small in comparison to peculiar (non-Hubble expansion) velocities to provide a reliable distance indicator, but as it happens, does suggest a distance in line with redshift-independent distance estimates of 14 to 21 million light years. Using the most commonly accepted distance of 15 million light years, the galaxy's 11 by 9 arcmin wide central region corresponds to about 50 thousand light years, but the outer ring, which covers the best part of 18 arcmin, extends another 30 thousand light years or so. Recent infrared and ultraviolet studies show that the outer ring is only the most visible portion of a complex system of spiral arms, presumably caused by self-induced gravitational instabilities (M94 appears to be a "field" galaxy, with no nearby galaxies which could provide a signficant gravitational interaction). The core of the galaxy contains a 7000 light year wide ring of exceptionally hot, bright young stars which must have formed in a "starburst" less than 10 million years ago. Because of the intense radiation of this central ring, M94 is classified as a Seyfert galaxy (type Sy). |
Above, a 16 arcmin wide closeup of M94
Below, a digitally stretched version of the image above shows the outer regions in more detail
Below, a slightly "stretched" image of a half-degree wide region centered on M94
Below, an NOAO image of the central portion of M94 (Image Credits: Adam Block, AURA, NSF, NOAO)
Below, a detail of the image above (Image Credits: Adam Block, AURA, NSF, NOAO)
 Below, a multispectral composite of infrared and ultraviolet images of M94. Red, blue and green are used to represent various infrared wavelengths, and purple is used for ultraviolet radiation. The yellow circle near the center represents a combination of ultraviolet radiation from hot young stars and infrared radiation from clouds of gas and dust near the stars. (Image Credits: Spitzer Legacy Program, GALEX Nearby Galaxy Survey & R. Jay GaBany, Cosmotography |
NGC 4737
Discovered (Jan 2, 1786) by William Herschel
NGC 4738
Discovered (Mar 1, 1851) by Bindon Stoney
NGC 4739
Discovered (Mar 3, 1786) by William Herschel
NGC 4740 (= NGC 4727)
Discovered (Feb 8, 1785) by William Herschel (and later listed as NGC 4727)
Discovered (Apr 27, 1887) by Lewis Swift (6-49) (and later listed as NGC 4740)
A 12th-magnitude barred spiral galaxy (type SBbc) in Corvus (RA 12 50 57.2, Dec -14 19 59)
The second IC states (per Howe and Swift) that 4740 = 4726. Perhaps that is a typographical error for 4740 = 4727?
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NGC 4741
Discovered (Mar 9, 1788) by William Herschel
NGC 4742
Discovered (Mar 25, 1786) by William Herschel
NGC 4743
Discovered (Jun 8, 1834) by John Herschel
NGC 4744
Discovered (Jun 8, 1834) by John Herschel
NGC 4745
Discovered (Apr 24, 1865) by Heinrich d'Arrest
NGC 4746
Discovered (Mar 29, 1830) by John Herschel
NGC 4747
Discovered (Apr 6, 1785) by William Herschel
NGC 4748
Discovered (Mar 27, 1786) by William Herschel
NGC 4749 (= PGC 43527)
Discovered (Apr 7, 1793) by William Herschel
A 14th-magnitude spiral galaxy (type Sb) in Draco (RA 12 51 12.2, Dec +71 38 06)
1.7 by 0.3 arcmin apparent size
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Above, a 2.4 arcmin wide closeup of NGC 4749
Below, a 12 arcmin wide region centered on the galaxy
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