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Page last updated Oct 29, 2023 (Completed entry for 7727, including new image)
Page last updated Aug 17, 2022 (Changed link for 7727 from German to English)
Last prior update Apr 18, 2017
Checked historical references, added Dreyer NGC entries
WORKING 7700: Add/update Steinicke listings/data, check IDs
NGC 7700 (= PGC 71777)
Discovered (Nov 18, 1864) by Albert Marth
A 13th-magnitude spiral galaxy (type S0/a?) in Pisces (RA 23 34 30.2, Dec -02 57 12)
Historical Identification: Per Dreyer NGC 7700 (= GC 6210, Marth #584, 1860 RA 23 27 18, NPD 93 44) is "very faint, extremely small, stellar".
Physical Information: Based on a recessional velocity of 5245 km/sec, NGC 7700 is about 245 million light years away. Given that and its apparent size of 2.0 by 0.4 arcmins, it is about 140 thousand light years across. Since it and NGC 7701 are about the same distance from us, they may be a gravitationally bound pair. (Note: Wikisky incorrectly labels NGC 7700 as NGC 7701, and vice-versa. The images on this page are correctly labeled.)
 Above, a 12 arcmin wide SDSS image centered on NGC 7700, also showing NGC 7699 and 7701 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7701 (= PGC 71779)
Discovered (Sep 20, 1784) by William Herschel
Also observed (Sep 24, 1862) by Heinrich d'Arrest
A 14th-magnitude lenticular galaxy (type S0? pec) in Pisces (RA 23 34 31.5, Dec -02 51 18)
Historical Identification: Per Dreyer, NGC 7701 (= GC 4984 = WH III 188, d'Arrest, 1860 RA 23 27 20, NPD 93 37.5) is "very faint, small, round, much brighter middle, 11th magnitude star to southwest".
Physical Information: Based on a recessional velocity of 5335 km/sec, NGC 7701 is about 250 million light years away. Given that and its apparent size of 0.8 by 0.5 arcmins, it is about 60 thousand light years across. Since it and NGC 7700 are about the same distance from us, they may be a gravitationally bound pair. (Note: Wikisky incorrectly labels NGC 7701 as NGC 7700, and vice-versa. The images on this page are correctly labeled.)
 Above, a 12 arcmin wide SDSS image centered on NGC 7701, also showing NGC 7699 and 7700 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7702 (= PGC 71829)
Discovered (Oct 28, 1834) by John Herschel
A 12th-magnitude lenticular galaxy (type (R)SA0(r)a?) in Phoenix (RA 23 35 28.8, Dec -56 00 43)
Historical Identification: Per Dreyer, NGC 7702 (= GC 4985 = JH 3999, 1860 RA 23 27 44, NPD 146 47.0) is "bright, considerably small, extended, gradually then suddenly brighter middle, 8th or 9th magnitude star to west".
Physical Information: Apparent size about 2.3 by 1.2? arcmin.
 Above, a 12 arcmin wide DSS image centered on NGC 7702 Below, a 2.4 arcmin wide DSS image of the galaxy (Post-processing by Courtney Seligman)

NGC 7703 (= PGC 71797)
Discovered (Oct 7, 1825) by John Herschel
Also observed (Sep 1, 1886) by Lewis Swift
A 13th-magnitude lenticular galaxy (type S0?) in Pegasus (RA 23 34 46.8, Dec +16 04 33)
Historical Identification: Per Dreyer, NGC 7703 (= GC 4986 = JH 2251, 1860 RA 23 27 44, NPD 74 42.0) is "very faint, very small, gradually brighter middle, 14th magnitude star 1 arcmin to northeast".
Physical Information: Apparent size about 2.2 by 0.5? arcmin.
NGC 7704 (= PGC 71810)
Discovered (Oct 13, 1827) by John Herschel
A 13th-magnitude lenticular galaxy (type E/S0?) in Pisces (RA 23 35 00.9, Dec +04 53 53)
Historical Identification: Per Dreyer, NGC 7704 (= GC 4987 = JH 2252, 1860 RA 23 27 51, NPD 85 52.2) is "extremely faint, 12th magnitude star to west, southwestern of 2", the other being NGC 7706.
Physical Information: Apparent size about 1.1 by 0.9? arcmin. Probably gravitationally interacting with NGC 7706.
 Above, a 12 arcmin wide SDSS image centered on NGC 7704, also showing NGC 7705 and 7706 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7705 (= PGC 71811)
Discovered (Oct 27, 1864) by Albert Marth=
A 14th-magnitude lenticular galaxy (type SB0?) in Pisces (RA 23 35 02.4, Dec +04 48 16)
Historical Identification: Per Dreyer, NGC 7705 (= GC 6211, Marth #585, 1860 RA 23 27 54, NPD 85 58) is "extremely faint".
Physical Information: Apparent size about 0.6 by 0.5? arcmin.
 Above, a 12 arcmin wide SDSS image centered on NGC 7705, also showing NGC 7704 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7706 (= PGC 71817)
Discovered (Oct 16, 1827) by John Herschel
A 13th-magnitude lenticular galaxy (type S0? pec) in Pisces (RA 23 35 10.4, Dec +04 57 53)
Historical Identification: Per Dreyer, NGC 7707 (= GC 4988 = JH 2253, 1860 RA 23 28 03, NPD 85 48.9) is "very faint, pretty small, 18th magnitude star close to south, northeastern of 2", the other being NGC 7704. The position precesses to RA 23 35 10.4, Dec +04 57 31, about 0.4 arcmin west of the center of the galaxy and well within its outer limits, so the identification would be certain even without the reference to NGC 7704.
Physical Information: Based on a recessional velocity of 5635 km/sec, NGC 7706 is about 260 million light years away. Given that and its apparent size of 1.2 by 1.0 arcmin, it is about 90 thousand light years across. Probably gravitationally interacting with NGC 7704.
 Above, a 12 arcmin wide SDSS image centered on NGC 7706, also showing NGC 7704 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7707 (= PGC 71798)
Discovered (Oct 24, 1786) by William Herschel
Also observed (Oct 29, 1828) by John Herschel
A 13th-magnitude lenticular galaxy (type E/S0?) in Andromeda (RA 23 34 51.3, Dec +44 18 17)
Historical Identification: Per Dreyer, NGC 7707 (= GC 4989 = JH 2254 = WH III 579, 1860 RA 23 28 03, NPD 46 27.7) is "extremely faint, small, round, 9th or 10th magnitude star very near to west".
Physical Information: Apparent size about 1.3 by 1.1? arcmin.
NGC 7708
Discovered (Sep 19, 1787) by William Herschel
Also observed (Nov 20, 1829) by John Herschel
A group of stars in Cepheus (RA 23 35 00.0, Dec +72 50 00)
Historical Identification: Per Dreyer, NGC 7708 (= GC 4990 = JH 2255 = WH VIII 62, 1860 RA 23 28 16, NPD 17 51.4) is "a cluster, large, poor, a little compressed, stars of 8th and from 10th to 15th magnitude".
Physical Information: About 30 arcmin across?
NGC 7709 (= PGC 71828)
Discovered (Oct 21, 1886) by Lewis Swift
Also observed (Nov 16, 1890) by Guillaume Bigourdan
Also observed (date?) by Herbert Howe
A 13th-magnitude lenticular galaxy (type SB0?) in Aquarius (RA 23 35 27.2, Dec -16 42 20)
Historical Identification: Per Dreyer, NGC 7709 (Swift list VI (#97), 1860 RA 23 28 22, NPD 107 28.8) is "pretty faint, small, round, a little brighter middle". The second IC adds (per Bigourdan and Howe) "RA is 23 28 10, much extended 225 degrees".
Physical Information: Apparent size about 2.3 by 0.6? arcmin.
NGC 7710 (= PGC 71844)
Discovered (Sep 24, 1862) by Heinrich d'Arrest
Discovered (Nov 18, 1864) by Albert Marth
A 14th-magnitude lenticular galaxy (type S0?) in Pisces (RA 23 35 46.1, Dec -02 52 51)
Historical Identification: Per Dreyer, NGC 7710 (= GC 6212, d'Arrest, Marth #586, 1860 RA 23 28 32, NPD 93 39.0) is "pretty faint, very small, stellar".
Physical Information: Apparent size about 1.2 by 0.5? arcmin.
NGC 7711 (= PGC 71836)
Discovered (Oct 14, 1784) by William Herschel
Also observed (Nov 2, 1823) by John Herschel
A 12th-magnitude lenticular galaxy (type S0?) in Pegasus (RA 23 35 39.4, Dec +15 18 06)
Historical Identification: Per Dreyer, NGC 7711 (= GC 4991 = JH 2256 = WH II 244, 1860 RA 23 28 35, NPD 75 28.2) is "faint, small, round, pretty suddenly brighter middle, stellar".
Physical Information: Apparent size about 2.6 by 1.3? arcmin.
NGC 7712 (= PGC 71850)
Discovered (1876) by Wilhelm Tempel
A 13th-magnitude elliptical galaxy (type E1?) in Pegasus (RA 23 35 51.5, Dec +23 37 06)
Historical Identification: Per Dreyer, NGC 7712 (= GC 6213, Tempel list I (#53), 1860 RA 23 28 45, NPD 67 08.3) is "very faint".
Physical Information: Apparent size about 0.9 by 0.8? arcmin.
NGC 7713 (= PGC 71866)
Discovered (Oct 4, 1836) by John Herschel
An 11th-magnitude spiral galaxy (type SB(r)d?) in Sculptor (RA 23 36 15.3, Dec -37 56 20)
Historical Identification: Per Dreyer, NGC 7713 (= GC 4992 = JH 4000, 1860 RA 23 28 57, NPD 128 13.0) is "pretty bright, large, extended, very gradually brighter middle". The second IC says "In NPD for 13 arcmin read 43 arcmin. Misprint in the GC".
Physical Information: Based on a recessional velocity of 690 km/sec, NGC 7713 should be about 32 million light years away. For such close objects peculiar (non-Hubble expansion) velocities are often a substantial part of their radial velocity, but in this case the value is in good agreement with redshift-independent distance estimates of 27 to 40 million light years. Given that and its apparent size of 4.5 by 1.8 arcmin, the galaxy is about 40 thousand light years across.
 Above, a 12 arcmin wide DSS image centered on NGC 7713 Below, a 4.8 arcmin wide DSS image of the galaxy
 Below, a ? arcmin wide HST image of the galaxy (Image Credit Hubble Legacy Archive)

PGC 71910 (= PGC 71912 = "NGC 7713A")
Not an NGC object but listed here because often called NGC 7713A
A 13th-magnitude spiral galaxy (type SB(r)c?) in Sculptor (RA 23 37 08.7, Dec -37 42 54)
Physical Information: Based on a recessional velocity of 3010 km/sec, PGC 71910 is about 140 million light years away. Given that and its apparent size of 1.8 by 1.4 arcmin, it is about 75 thousand light years across. Although in roughly the same part of the sky as NGC 7713, its much greater distance means that PGC 71910 has no relationship to the other galaxy.
 Above, a 12 arcmin wide DSS image centered on PGC 71910 Below, a 2.4 arcmin wide DSS image of the galaxy

NGC 7714 (= PGC 71868, and with NGC 7715 = Arp 284)
Discovered (Sep 18, 1830) by John Herschel
A magnitude 12.5 spiral galaxy (type SB(s)b pec?) in Pisces (RA 23 36 14.1, Dec +02 09 17)
Historical Identification: Per Dreyer, NGC 7714 (= GC 4993 = JH 2257, 1860 RA 23 29 05, NPD 88 37.2) is "pretty bright, small, round, pretty suddenly brighter middle, 12th magnitude star to southwest, 6th magnitude star to southeast".
Physical Information: NGC 7714 is a starburst galaxy, with extended arms consisting of clouds of gas and stars flung into space by its interaction with NGC 7715. Based on a recessional velocity of 2800 km/sec, it is about 130 million light years away, in reasonable agreement with a redshift-independent distance estimate of 120 million light years. Given that and its apparent size of about 1.9 by 1.4, it is about 70 thousand light years across (this does not include the extended arms, which cover 2.4 arcmin, or about 90 thousand light years). NGC 7715 is probably a spiral galaxy that passed close to NGC 7714, stripping away a considerable portion of its original gas and stars, and severely distorting both galaxies; if the near-miss had been a more direct collision, NGC 7714 might have ended up as a "ring" galaxy.
 Above, a 12 arcmin wide image centered on NGC 7714 and 7715 (NOAO image cropped and altered (to remove glare from 16 Piscium), then superimposed on a DSS background) Below, a 4.8 arcmin wide image of the pair (Image Credit Adam Block/NOAO/AURA/NSF)
 Below, an ? arcmin wide image of NGC 7714 (North on left to allow for more detail) (Image Credit NASA, ESA, Acknowledgement A. Gal-Yam (Weizmann Institute of Science)) (Part of NGC 7715 also shown at very bottom)

NGC 7715 (= PGC 71878, and with NGC 7714 = Arp 284)
Discovered (Nov 4, 1850) by Bindon Stoney
A magnitude 14.2 irregular galaxy (type Im(s)? pec) in Pisces (RA 23 36 21.7, Dec +02 09 23)
Historical Identification: Per Dreyer, NGC 7715 (= GC 4994, 3rd Lord Rosse, 1860 RA 23 29 12, NPD 88 37.1) is "extremely faint, pretty large, round".
Discovery Notes: Although Dreyer credits the discovery to William Parsons, 3rd Earl of Rosse, he notes that many of Rosse's nebular discoveries were actually made by one of his assistants, in this case Bindon Stoney.
Physical Information: Based on its 2770 km/sec recessional velocity, NGC 7715 is about 130 million light years away, in reasonable agreement with a redshift-independent distance estimate of 120 million light years, and (as must be the case) the same distance as its obvious companion, NGC 7714 (which see for images). Given that and its apparent size of about 2.7 by 0.4 arcmin, it is about 100 thousand light years across. NGC 7715 is probably a spiral galaxy that passed close to NGC 7714, stripping away a considerable portion of its original gas and stars, and distorting both galaxies; if the near-miss had been a more direct collision, NGC 7714 might have ended up as a "ring" galaxy.
 Above, a 2.4 arcmin wide DSS image of NGC 7715; for wider views see NGC 7714 Below, an ? arcmin wide image of NGC 7715 (North on right to allow for more detail) ('Raw' HST image from Hubble Legacy Archive; minimal post-processing by Courtney Seligman)

NGC 7716 (= PGC 71883)
Discovered (Sep 6, 1831) by John Herschel
A 12th-magnitude spiral galaxy (type SAB(r)b?) in Pisces (RA 23 36 31.3, Dec +00 17 51)
Historical Identification: Per Dreyer, NGC 7716 (= GC 4995 = JH 2258, 1860 RA 23 29 20, NPD 90 28.7) is "faint, pretty large, a little extended, gradually brighter middle, 10th magnitude star to south".
Physical Information: Apparent size about 2.2 by 1.8? arcmin.
 Above, a 12 arcmin wide SDSS image centered on NGC 7716 Below, a 2.4 arcmin wide SDSS image of the galaxy
 (HST image of a portion of the galaxy to be posted here)
NGC 7717 (= PGC 71941)
Discovered (1876) by Wilhelm Tempel
A 13th-magnitude lenticular galaxy (type SB0/a?) in Aquarius (RA 23 37 43.6, Dec -15 07 07)
Historical Identification: Per Dreyer, NGC 7717 (= GC 6214, Tempel list I (#54), 1860 RA 23 30 35, NPD 105 53.3) is "very faint, small".
Physical Information: Apparent size about 1.4 by 1.2? arcmin.
NGC 7718 (= PGC 71959)
Discovered (Sep 6, 1863) by Albert Marth
A 14th-magnitude spiral galaxy (type S?? pec) in Pegasus (RA 23 38 04.9, Dec +25 43 11)
Historical Identification: Per Dreyer, NGC 7718 (= GC 6215, Marth #587, 1860 RA 23 31 04, NPD 65 05) is "very faint, small, round".
Physical Information: Apparent size about 0.9 by 0.6? arcmin.
 Above, a 12 arcmin wide SDSS image centered on NGC 7718 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7719 (= PGC 71961)
Discovered (Aug 11, 1885) by Francis Leavenworth
Also observed (date?) by Herbert Howe
A 14th-magnitude spiral galaxy (type Sab?) in Aquarius (RA 23 38 02.6, Dec -22 58 29)
Historical Identification: Per Dreyer, NGC 7719 (Leavenworth list I (#264), 1860 RA 23 31 25, NPD 113 46.0) is "extremely faint, very small, round". The second IC lists a corrected RA (per Howe) of 23 30 43.
Physical Information: Apparent size about 0.9 by 0.7? arcmin. Supposedly accompanied by a 16th-magnitude spiral galaxy (type S??) of apparent size 0.2 by 0.1 arcmin, about 0.2 arcmin south of the center of NGC 7719 (in other words, the bright blob immediately below it in the images below), but whether (a) that is even a galaxy is uncertain, and (b) even if so, whether it has any relationship to NGC 7719 is very suspect.
 Above, a 12 arcmin wide DSS image centered on NGC 7719 Below, a 2.4 arcmin wide DSS image of the galaxy

NGC 7720 (= PGC 71985)
Discovered (Sep 10, 1784) by William Herschel
Also observed (Sep 5, 1828) by John Herschel
A 12th-magnitude elliptical galaxy (type E2?) in Pegasus (RA 23 38 29.3, Dec +27 01 52)
Historical Identification: Per Dreyer, NGC 7720 (= GC 4996 = JH 2259 = WH III 146, 1860 RA 23 31 28, NPD 63 45.2) is "faint, small, a little extended, brighter middle, among stars".
Physical Information: Apparent size about 1.6 by 1.3? arcmin. Apparently accompanied by a 15th-magnitude compact galaxy (type C??) just northeast of the nucleus of the galaxy (at RA 23 38 29.5, Dec +27 02 05, apparent size 0.2 by 0.2? arcmin), but whether the two are truly close or merely overlapping images from the cluster of galaxies that fills the region near them cannot be determined.
 Above, a 12 arcmin wide SDSS image centered on NGC 7720, showing many other cluster members (Several are NGC/IC objects, but are often misidentified, so their labels are not shown here as yet) Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7721 (= PGC 72001)
Discovered (Sep 10, 1785) by William Herschel
Also observed (Oct 4, 1828) by John Herschel
A 12th-magnitude spiral galaxy (type SA(s)c?) in Aquarius (RA 23 38 48.6, Dec -06 31 04)
Historical Identification: Per Dreyer, NGC 7721 (= GC 4997 = JH 2260 = WH II 432, 1860 RA 23 31 36, NPD 97 17.6) is "pretty faint, considerably large, extended 12°±, very gradually brighter middle".
Physical Information: Based on a recessional velocity of 2015 km/sec, NGC 7721 is about 95 million light years away, in good agreement with redshift-independent distance estimates of 60 to 90 million light years. Given that and its apparent size of 3.5 by 1.4 arcmin, it is about 95 thousand light years across.
 Above, a 12 arcmin wide SDSS image centered on NGC 7721 Below, a 3.6 arcmin wide SDSS image of the galaxy

NGC 7722 (= PGC 71993)
Discovered (Aug 12, 1864) by Heinrich d'Arrest
A 12th-magnitude lenticular galaxy (type S0/a?) in Pegasus (RA 23 38 40.9, Dec +15 57 17)
Historical Identification: Per Dreyer, NGC 7722 (= GC 6216, d'Arrest, 1860 RA 23 31 39, NPD 74 48.9) is "pretty bright, pretty large, round, much brighter middle".
Physical Information: Apparent size about 1.7 by 1.4? arcmin.
NGC 7723 (= PGC 72009)
Discovered (Nov 27, 1785) by William Herschel
Also observed (Sep 9, 1825) by John Herschel
An 11th-magnitude spiral galaxy (type SBb?) in Aquarius (RA 23 38 57.0, Dec -12 57 40)
Historical Identification: Per Dreyer, NGC 7723 (= GC 4998 = JH 2261 = WH I 110, 1860 RA 23 31 42, NPD 103 44.2) is "considerably bright, considerably large, extended, gradually much brighter middle, mottled but not resolved".
Physical Information: Apparent size about 3.5 by 2.2? arcmin.
Above, a 12 arcmin composite image centered on NGC 7723 (NOAO image superimposed on DSS background) (Image Credit above & below John Downs & Chriss Hoffman/Adam Block/NOAO/AURA/NSF) Below, a 3.6 arcmin wide NOAO image of the galaxy

NGC 7724 (= PGC 72015)
Discovered (Sep 23, 1873) by Édouard Stephan
Discovered (Nov 26, 1877) by Wilhelm Tempel
A 13th-magnitude spiral galaxy (type Sb?) in Aquarius (RA 23 39 07.0, Dec -12 13 27)
Historical Identification: Per Dreyer, NGC 7724 (= GC 6217, Stephan list V (#13), 1860 RA 23 31 52, NPD 102 59.9) is "extremely faint, pretty large, irregularly round".
Physical Information: Apparent size about 1.5 by 1.0? arcmin.
 Above, a 12 arcmin wide DSS image centered on NGC 7724 Below, a 2.4 arcmin wide DSS image of the galaxy

NGC 7725 (= PGC 72025)
Discovered (Sep 20, 1784) by William Herschel
A 14th-magnitude lenticular galaxy (type S0?) in Aquarius (RA 23 39 14.7, Dec -04 32 20)
Historical Identification: Per Dreyer, NGC 7725 (= GC 4999 = WH III 189, 1860 RA 23 32 21, NPD 95 24.1) is "most extremely faint".
Physical Information: Apparent size about 0.8 by 0.7? arcmin.
NGC 7726 (probably(?) = PGC 72024)
Discovered (Aug 8, 1886) by Lewis Swift
A 14th-magnitude spiral galaxy (SB(s)b?) in Pegasus (RA 23 39 11.9, Dec +27 06 54)
Historical Identification: Per Dreyer, NGC 7726 (Swift list IV (#98), 1860 RA 23 32 30, NPD 63 47.3) is "most extremely faint, pretty small, round, very difficult". (The NGC identification is apparently somewhat controversial. For instance, a Wikisky search for NGC 7726 incorrectly shows a faint spiral galaxy just to the east of NGC 7720 (which, whatever it should be called, is not NGC 7726); a search for PGC 72024 shows the correct PGC object, but whether that is NGC 7726 requires more study.)
Physical Information: Apparent size of PGC 72024 is about 1.5 by 0.6? arcmin.
 Above, a 12 arcmin wide SDSS image centered on PGC 72024, which is likely to be NGC 7726 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7727 = Arp 222 (= PGC 72060 = MCG -02-60-008)
Discovered (Nov 27, 1785) by William Herschel
Also observed (Sep 9, 1825) by John Herschel
Also observed (Sep 1, 1864) by Heinrich d'Arrest
A magnitude 10.6 spiral galaxy (type SAB(s)a? pec) in Aquarius (RA 23 39 53.7, Dec -12 17 35)
Historical Identification: Per Dreyer, NGC 7727 (= GC 5000 = JH 2262 = WH I 111, 1860 RA 23 32 39, NPD 103 04.1) is "pretty bright, pretty large, irregularly round, much brighter middle." The position precesses to (2000) RA 23 39 53.6, Dec -12 17 35, almost dead center on the galaxy listed above, the description fits 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 1520 km/sec (and H0 = 70 km/sec/Mpc), NGC 7727 is about 70 million light-years away, in good agreement with redshift-independent distance estimates of about 35 to 95 million light-years (the ESO press release uses a distance of about 90 million light-years). Given that and its apparent size of about 2.2 by 2.1 arcmin for the central galaxy and about 8.5 by 3.8 arcmin counting the extended plumes/arms (from the images below), the central galaxy is about 45 thousand light-years across and its extended plumes span about 175 thousand light-years.
NGC 7727 is the result of the collision of two galaxies about a billion years ago (based on the age of star clusters formed in the collision) and will "soon" (after another billion years or so) settle down to what appears to be a more or less normal galaxy. As of 2022 it is the closest galaxy known to have two supermassive black holes (one from each of the colliding galaxies), the previous record holder being about five times further away. At the moment the two black holes are about 1500 light-years apart (only half the distance of the next closest known pair of supermassive black holes), but as they orbit around each other they will gradually lose energy, move closer and closer together, and eventually merge into a single black hole, most likely with spectacular side effects.
Use By The Arp Atlas: NGC 7727 is used by The Arp Atlas of Peculiar Galaxies as an example of a galaxy with amorphous spiral arms, with the note "Amorphous arms."
 Above, an 11.75 arcmin wide image centered on NGC 7727 (Image Credit above and below ESO/VST ATLAS team, Acknowledgement Durham University/CASU/WFAU) Below, a 2.5 arcmin wide image of the central galaxy
 Below, a finding "chart" for the following image (Image Credit ESO, Voggel et al.)
 Below, a 0.135 arcmin wide image of the center of the galaxy, showing radiation caused by the supermassive black holes (Image Credit ESO/Voggel et al.)
 Below, a 5.0 arcmin wide NOIRLab image of the galaxy (Image Credit International Gemini Observatory/NOIRLab/NSF/AURA ; Image Processing T. A. Rector, J. Miller, M. Rodriguez, M. Zarriani)
 Below, a 2.2 by 3.0 arcmin wide NOIRLab image of the central galaxy (Image Credit as above)

NGC 7728 (= PGC 72064)
Discovered (Feb 16, 1862) by Heinrich d'Arrest
A 13th-magnitude elliptical galaxy (type E2?) in Pegasus (RA 23 40 00.7, Dec +27 08 00)
Historical Identification: Per Dreyer, NGC 7728 (= GC 6218, d'Arrest, 1860 RA 23 33 00, NPD 63 39.0) is "very faint, very small, a little extended, 10th magnitude star to southwest".
Physical Information: Apparent size about 1.0 by 0.8? arcmin.
NGC 7729 (= PGC 72083)
Discovered (Oct 5, 1883) by Édouard Stephan
A 14th-magnitude spiral galaxy (type SBa?) in Pegasus (RA 23 40 33.6, Dec +29 11 17)
Historical Identification: Per Dreyer, NGC 7729 (Stephan list XIII (#97), 1860 RA 23 33 33, NPD 61 35.2) is "very faint, small, irregularly extended, faint star involved on south side".
Physical Information: Apparent size about 1.8 by 0.6? arcmin.
 Above, a 12 arcmin wide SDSS image centered on NGC 7729 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7730 (= PGC 72094)
Discovered (1876) by Wilhelm Tempel
Looked for but not found (date?) by Herbert Howe
A 14th-magnitude spiral galaxy (type S??) in Aquarius (RA 23 40 45.8, Dec -20 30 32)
Historical Identification: Per Dreyer, NGC 7730 (= GC 6219, Tempel list I (#56), 1860 RA 23 34 05, NPD 111 00.3) is "pretty bright, pretty large, extended". The second IC notes "Not found by Howe (2 nights). The place of this object was communicated to me by Tempel in 1876, though with the RA marked ±".
Physical Information: Apparent size about 0.7 by 0.6? arcmin.
 Above, a 12 arcmin wide composite image centered on NGC 7730 (SDSS image superimposed on DSS background) Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7731 (= PGC 72128)
Discovered (Oct 27, 1864) by Albert Marth
A 13th-magnitude spiral galaxy (type (R)SBa? pec) in Pisces (RA 23 41 29.0, Dec +03 44 26)
Historical Identification: Per Dreyer, NGC 7731 (= GC 6220, Marth #588, 1860 RA 23 34 17, NPD 87 03) is "faint, small".
Physical Information: Apparent size about 1.4 by 1.1? arcmin. Part of a physical pair with NGC 7732.
 Above, a 2.4 arcmin wide SDSS image of NGC 7731 and part of NGC 7732 (which see for more images)
NGC 7732 (= PGC 72131)
Discovered (Oct 27, 1864) by Albert Marth
A 14th-magnitude spiral galaxy (type Scd? pec) in Pisces (RA 23 41 34.0, Dec +03 43 30)
Historical Identification: Per Dreyer, NGC 7732 (= GC 6221, Marth #589, 1860 RA 23 34 22, NPD 87 03) is "very faint, pretty large".
Physical Information: Apparent size about 2.0 by 0.6? arcmin. Part of a physical pair with NGC 7731.
 Above, a 12 arcmin wide SDSS image centered on NGC 7732, also showing NGC 7731 Below, a 2.4 arcmin wide SDSS image of NGC 7732 and part of NGC 7731

NGC 7733 (= PGC 72177)
Discovered (Nov 2, 1834) by John Herschel
A 14th-magnitude spiral galaxy (type (R')SB(rs)b? pec) in Tucana (RA 23 42 32.9, Dec -65 57 22)
 Above, a 12 arcmin wide DSS image centered on NGC 7733 and 7734 Below, a 2.4 arcmin wide DSS image of the pair of galaxies

NGC 7734 (= PGC 72183)
Discovered (Nov 2, 1834) by John Herschel
A 13th-magnitude spiral galaxy (type (R')SB(r)b? pec) in Tucana (RA 23 42 43.0, Dec -65 56 39)
Historical Identification: Per Dreyer, NGC 7734 (= GC 5002 = JH 4002, 1860 RA 23 34 49, NPD 156 44.4) is "extremely faint, considerably small, round, eastern of 2", the other being NGC 7733.
Physical Information: Apparent size about 1.4 by 1.2? arcmin. Physically interacting with NGC 7733, which see for images.
NGC 7735 (= PGC 72165)
Discovered (Sep 5, 1828) by John Herschel
A 14th-magnitude elliptical galaxy (type E3?) in Pegasus (RA 23 42 17.3, Dec +26 13 56)
Historical Identification: Per Dreyer, NGC 7735 (= GC 5003 = JH 2263, 1860 RA 23 35 15, NPD 64 33.2) is "very faint, small, very little extended, 13th magnitude star to the northeast, very near".
Physical Information: Apparent size about 1.3 by 0.9? arcmin.
NGC 7736 (= PGC 72173)
Discovered (1886) by Ormond Stone
A 13th-magnitude lenticular galaxy (type S0?) in Aquarius (RA 23 42 25.7, Dec -19 27 09)
Historical Identification: Per Dreyer, NGC 7736 (Ormond Stone list I (#265), 1860 RA 23 35 25, NPD 110 14.0) is "extremely faint, extremely small, gradually brighter middle, between two 12th magnitude stars".
Physical Information: Apparent size about 1.7 by 1.5? arcmin.
NGC 7737 (= PGC 72182)
Discovered (Oct 3, 1886) by Guillaume Bigourdan
A 14th-magnitude lenticular galaxy (type S0/a?) in Pegasus (RA 23 42 46.3, Dec +27 03 09)
Historical Identification: Per Dreyer, NGC 7737 (Bigourdan (list II #98), 1860 RA 23 35 45, NPD 63 43) is "very faint, small, much brighter middle and nucleus".
Physical Information: Apparent size about 0.9 by 0.4? arcmin.
NGC 7738 (= PGC 72247)
Discovered (1865) by Gaspare Ferrari
A 13th-magnitude spiral galaxy (type SBb?) in Pisces (RA 23 44 02.0, Dec +00 31 03)
Historical Identification: Per Dreyer, NGC 7738 (= GC 6222, Secchi (#6), 1860 RA 23 36 22, NPD 90 17.3) is "very faint, northern of 2", the other being NGC 7739.
Discovery Notes: Ferrari was a fellow of the Roman College Observatory, whose director was Angelo Secchi. Secchi wrote the paper announcing Ferrari's discoveries, so he received the credit in the corresponding NGC entries.
Physical Information: Apparent size about 2.0 by 1.5? arcmin.
 Above, a 12 arcmin wide SDSS image centered on NGC 7738 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7739 (= PGC 72272)
Discovered (1865) by Gaspare Ferrari
A 14th-magnitude elliptical galaxy (type E2?) in Pisces (RA 23 44 30.0, Dec +00 19 16)
Historical Identification: Per Dreyer, NGC 7739 (= GC 6223, Secchi (#7), 1860 RA 23 36 22, NPD 90 18) is "southern of 2, very near", the other being NGC 7738.
Discovery Notes: Ferrari was a fellow of the Roman College Observatory, whose director was Angelo Secchi. Secchi wrote the paper announcing Ferrari's discoveries, so he received the credit in the corresponding NGC entries.
Physical Information: Apparent size about 1.1 by 0.9? arcmin.
NGC 7740 (= PGC 72216)
Discovered (Oct 27, 1886) by Guillaume Bigourdan
A 14th-magnitude lenticular galaxy (type S0?) in Pegasus (RA 23 43 32.2, Dec +27 18 45)
Historical Identification: Per Dreyer, NGC 7740 (Bigourdan (list II #99), 1860 RA 23 36 28, NPD 63 28) is "very faint, small, a little brighter middle, stellar".
Physical Information: Apparent size about 0.8 by 0.5? arcmin.
NGC 7741 (= PGC 72237)
Discovered (Sep 10, 1784) by William Herschel
Also observed (Sep 1, 1864) by Heinrich d'Arrest
Also observed (Oct 25, 1881) by Édouard Stephan
An 11th-magnitude spiral galaxy (type SBc?) in Pegasus (RA 23 43 54.3, Dec +26 04 31)
Historical Identification: Per Dreyer, NGC 7741 (= GC 5004 = WH II 208, d'Arrest, Stephan list XII (#95), 1860 RA 23 36 52, NPD 64 42.2) is "considerably faint, considerably large, irregularly round, double star of 10th and 12th magnitudes 2 arcmin to northwest".
Physical Information: Apparent size about 4.5 by 2.9? arcmin.
 Above, a 12 arcmin wide SDSS image centered on NGC 7741 Below, a 4.8 arcmin wide SDSS image of the galaxy
 Below, another image of the same region (Image Credit Adam Block/NOAO/AURA/NSF)

NGC 7742 (= PGC 72260)
Discovered (Oct 18, 1784) by William Herschel
Also observed (Oct 12, 1825) by John Herschel
A 12th-magnitude spiral galaxy (type Sb?) in Pegasus (RA 23 44 15.7, Dec +10 46 01)
Historical Identification: Per Dreyer, NGC 7742 (= GC 5005 = JH 2264 = WH II 255, 1860 RA 23 37 09, NPD 80 00.7) is "considerably bright, considerably small, gradually much brighter middle, 12th magnitude star 72 arcsec to east".
Physical Information: An unusual unbarred ring galaxy, with an extremely bright core (hence, a Seyfert galaxy). Apparent size about 1.7 by 1.7? arcmin. Used by the de Vaucouleurs Atlas of Galaxy Types as an example of galaxy type S AB(r)ab .
 Above, a 12 arcmin wide SDSS image centered on NGC 7742 Below, a ? arcmin wide HST image of the galaxy (Image Credit Hubble Heritage Team (AURA/STScI/NASA))
 Below, the HST image superimposed on a 2.4 arcmin wide SDSS image of the galaxy

NGC 7743 (= PGC 72263)
Discovered (Oct 18, 1784) by William Herschel
Also observed (Aug 22, 1827) by John Herschel
A 12th-magnitude lenticular galaxy (type SB0/a?) in Pegasus (RA 23 44 21.1, Dec +09 56 02)
Historical Identification: Per Dreyer, NGC 7743 (= GC 5006 = JH 2265 = WH II 256, 1860 RA 23 37 14, NPD 80 50.6) is "pretty faint, small, round, 14th magnitude star to southeast".
Physical Information: Apparent size about 2.8 by 2.4? arcmin.
NGC 7744 (= IC 5348 = PGC 72300)
Discovered (Sep 5, 1834) by John Herschel (and later listed as NGC 7744)
Discovered (Sep 23, 1897) by Lewis Swift (and later listed as IC 5348)
A 12th-magnitude lenticular galaxy (type E/SB0?) in Phoenix (RA 23 44 59.2, Dec -42 54 36)
Historical Identification: Per Dreyer, NGC 7744 (= GC 5007 = JH 4003, 1860 RA 23 37 36, NPD 133 41.5) is "considerably bright, small, very little extended, suddenly very much brighter middle equal to 14th magnitude star".
Physical Information: Apparent size about 2.2 by 1.8? arcmin.
NGC 7745 (= PGC 72299)
Discovered (Sep 6, 1863) by Albert Marth
A 14th-magnitude elliptical galaxy (type E0?) in Pegasus (RA 23 44 45.7, Dec +25 54 34)
Historical Identification: Per Dreyer, NGC 7745 (= GC 6224, Marth #590, 1860 RA 23 37 41, NPD 64 52) is "extremely faint".
Physical Information: Apparent size about 0.7 by 0.7? arcmin.
NGC 7746 (= PGC 72319)
Discovered (Sep 7, 1886) by Lewis Swift
A 13th-magnitude lenticular galaxy (type S0?) in Pisces (RA 23 45 19.9, Dec -01 41 04)
Historical Identification: Per Dreyer, NGC 7746 (Swift list IV (#99), 1860 RA 23 38 03, NPD 92 27.4) is "extremely faint, pretty small, round, star near to south".
Physical Information: Apparent size about 1.4 by 1.1? arcmin.
NGC 7747 (= PGC 72328)
Discovered (Sep 23, 1873) by Édouard Stephan
A 14th-magnitude spiral galaxy (type SBb?) in Pegasus (RA 23 45 32.5, Dec +27 21 38)
Historical Identification: Per Dreyer, NGC 7747 (= GC 6225, Stephan list V (#14), 1860 RA 23 38 20, NPD 63 27.5) is "very faint, very small, irregularly round".
Physical Information: Apparent size about 1.5 by 0.5? arcmin.
 Above, a 12 arcmin wide SDSS image centered on NGC 7747 Below, a 2.4 arcmin wide SDSS image of the galaxy

NGC 7748
Recorded (Nov 16, 1829) by John Herschel
A 7th-magnitude star in Cepheus (RA 23 44 56.5, Dec +69 45 19)
Historical Identification: Per Dreyer, NGC 7748 (= GC 5008 = JH 2266, 1860 RA 23 38 27, NPD 21 01.3) is "a very large nebulosity, surrounds 7th magnitude star".
NGC 7749 (= PGC 72338)
Recorded (Sep 27, 1834) by John Herschel
A 13th-magnitude lenticular galaxy (type S0?) in Sculptor (RA 23 45 47.5, Dec -29 31 04)
Historical Identification: Per Dreyer, NGC 7749 (= GC 5009 = JH 4004, 1860 RA 23 38 30, NPD 120 17.1) is "very faint, small, round, gradually much brighter middle, 12th magnitude star to east".
Physical Information: Apparent size about 1.6 by 1.1? arcmin.
 Above, a 12 arcmin wide DSS image centered on NGC 7749 Below, a 2.4 arcmin wide DSS image of the galaxy

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