Celestial Atlas
(NGC 7550 - 7599) ←     NGC Objects: NGC 7600 - 7649 Link for sharing this page on Facebook     → (NGC 7650 - 7699)
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7600, 7601, 7602, 7603, 7604, 7605, 7606, 7607, 7608, 7609, 7610, 7611, 7612, 7613, 7614, 7615, 7616,
7617, 7618, 7619, 7620, 7621, 7622, 7623, 7624, 7625, 7626, 7627, 7628, 7629, 7630, 7631, 7632, 7633,
7634, 7635, 7636, 7637, 7638, 7639, 7640, 7641, 7642, 7643, 7644, 7645, 7646, 7647, 7648, 7649

Page last updated Apr 15, 2017
Checked historical references, added Dreyer's NGC entries
(some problems with 7617, 7631; see LdR4 p.172, 173)
WORKING 7600: Add/update Steinicke listings/data, check IDs

NGC 7600 (= PGC 71029)
Discovered (Sep 10, 1785) by
William Herschel
Also observed (Oct 4, 1828) by John Herschel
A 12th-magnitude lenticular galaxy (type E/S0? pec) in Aquarius (RA 23 18 53.8, Dec -07 34 48)
Historical Identification: Per Dreyer, NGC 7600 (= GC 4932 = JH 2227 = WH II 431, 1860 RA 23 11 39, NPD 98 20.7) is "considerably faint, small, round, pretty suddenly much brighter middle".
Physical Information: Based on a recessional velocity of 3485 km/sec, NGC 7600 is about 160 million light years away. Given that and its apparent size of about 3.5 by 1.5 arcmins, it is about 160 thousand light years across (this does not count the extended halo seen in the wide-field view below).
SDSS image of region near lenticular galaxy NGC 7600
Above, a 12 arcmin wide SDSS image centered on NGC 7600
Below, a 4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 7600

NGC 7601 (= PGC 71022)
Discovered (Aug 4, 1880) by
Andrew Common (29)
A 14th-magnitude spiral galaxy (type SAB(s)c?) in Pegasus (RA 23 18 47.1, Dec + 09 14 01)
Historical Identification: Per Dreyer, NGC 7601 (Common (#29), 1860 RA 23 11 42, NPD 81 30) is "pretty bright, diffuse".
Physical Information: Based on a recessional velocity of 8040 km/sec, a straightforward calculation indicates that NGC 7601 is about 375 million light years away. However, for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 365 million light years away at the time the light by which we see it was emitted, about 370 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). This result is in good agreement with redshift-independent distance estimates of 355 to 380 million years. Given that and its apparent size of 1.2 by 0.9 arcmin, the galaxy is about 125 thousand light years across.
SDSS image of region near spiral galaxy NGC 7601
Above, a 12 arcmin wide SDSS image centered on NGC 7601
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 7601

NGC 7602 (= PGC 71019)
Discovered (Nov 3, 1864) by
Albert Marth
Presumably also observed (Sep 25, 1867) by Herman Schultz
A 14th-magnitude lenticular galaxy (type S0/a?) in Pegasus (RA 23 18 43.5, Dec +18 41 56)
Historical Identification: Per Dreyer, NGC 7602 (= GC 6177, Marth #565, 1860 RA 23 11 47, NPD 72 04) is "extremely faint, extremely small, stellar".
Discovery Notes: On page 103 of his 1874 monograph Schultz describes a region supposedly to the east of NGC 7550 that Corwin points out cannot be to the east of that galaxy, but may be a region to the east of NGC 7578 (Schultz himself notes that observations made at a later date do not match the region near NGC 7550). Presuming that Schultz' observations were to the east of NGC 7578, he may have seen four of the objects discovered by Marth in that region, whence the "presumably also observed" note above. (More to follow when the Historical Identification section is completed?)
Physical Information: Based on a recessional velocity of 11795 km/sec, a straightforward calculation indicates that NGC 7602 is about 550 million light years away. However, for objects at such distances, we must account for the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 525 million light years away when the light by which we see it was emitted, about 535 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel-time). Given that and its apparent size of about 0.55 by 0.5 arcmin, NGC 7602 is about 85 thousand light years across.
SDSS image of region near lenticular galaxy NGC 7602
Above, a 12 arcmin wide SDSS image centered on NGC 7602, also showing NGC 7597 and 7598
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of lenticular galaxy NGC 7602

NGC 7603 (= PGC 71035, and with PGC 71041 =
Arp 92)
Discovered (Oct 23, 1864) by Albert Marth
A 13th-magnitude spiral galaxy (type Sb? pec) in Pisces (RA 23 18 56.4, Dec +00 14 39)
Historical Identification: Per Dreyer, NGC 7603 (= GC 6178, Marth #566, 1860 RA 23 11 47, NPD 90 31) is "faint, very small, stellar".
Physical Information: Apparent size about 1.6 by 1.0? arcmin. Although "linked" with PGC 71041 as part of Arp 92, the two galaxies are merely an optical double, as the smaller galaxy is twice as far away.
SDSS image of region near spiral galaxy NGC 7603 and elliptical galaxy PGC 71041, which comprise Arp 92
Above, a 12 arcmin wide SDSS image centered on NGC 7603, also showing PGC 71041
Below, a 2.4 arcmin wide SDSS image of the optical double
SDSS image of spiral galaxy NGC 7603 and elliptical galaxy PGC 71041, which comprise Arp 92

NGC 7604 (= PGC 70974)
Discovered (Nov 29, 1864) by
Albert Marth
A 15th-magnitude lenticular galaxy (type S0?) in Pisces (RA 23 17 51.9, Dec +07 25 48)
Historical Identification: Per Dreyer, NGC 7604 (= GC 6179, Marth #567, 1860 RA 23 11 47, NPD 83 19) is "extremely faint, very small, brighter middle".
Physical Information: Apparent size about 0.3 by 0.2? arcmin.

NGC 7605 (=
NGC 7583 = PGC 70975)
Discovered (Sep 2, 1864) by Albert Marth (and later listed as NGC 7583)
Discovered (Nov 29, 1864) by Albert Marth (and later listed as NGC 7605)
A 14th-magnitude spiral galaxy (type S??) in Pisces (RA 23 17 52.8, Dec +07 22 46)
Historical Identification: Per Dreyer, NGC 7605 (= GC 6180, Marth #568, 1860 RA 23 11 48, NPD 83 21) is "very faint, small, round, gradually a little brighter middle".
Physical Information: Given the duplicate entry, see NGC 7583 for anything else.

NGC 7606 (= PGC 71047)
Discovered (Sep 28, 1785) by
William Herschel
Also observed (Sep 9, 1831) by John Herschel
An 11th-magnitude spiral galaxy (type Sb?) in Aquarius (RA 23 19 04.8, Dec -08 29 11)
Historical Identification: Per Dreyer, NGC 7606 (= GC 4933 = JH 2228 = JH 3982 = WH I 104, 1860 RA 23 11 49, NPD 99 15.0) is "pretty faint, considerably large, pretty much extended 0°±".
Physical Information: Apparent size about 5.4 by 2.1? arcmin.
NOAO image of region near spiral galaxy NGC 7606 superimposed on an SDSS background to fill in areas otherwise not covered
Above, a 12 arcmin wide SDSS/NOAO composite image centered on NGC 7606
(Image Credit above and below Adam Block/NOAO/AURA/NSF)
Below, a 4.8 arcmin wide NOAO image of the galaxy
NOAO image of spiral galaxy NGC 7606

NGC 7607
Recorded (Aug 5, 1880) by
Wilhelm Tempel
A pair of stars in Pegasus (RA 23 18 59.3, Dec +11 20 30)
Historical Identification: Per Dreyer, NGC 7607 (Tempel list IV (#13), 1860 RA 23 11 56, NPD 79 25.4) is "very faint, small, round, 16th magnitude star half an arcmin to northeast (nebulous?)".

NGC 7608 (= PGC 71055)
Discovered (Nov 25, 1864) by
Albert Marth
Discovered (Oct 2, 1866) by Heinrich d'Arrest
A 14th-magnitude spiral galaxy (type Sbc?) in Pegasus (RA 23 19 15.3, Dec +08 21 01)
Historical Identification: Per Dreyer, NGC 7608 (= GC 6181, Marth #569, d'Arrest, 1860 RA 23 12 08, NPD 82 24.8) is "very faint, pretty small, a little extended, a little brighter middle".
Physical Information: Apparent size about 1.5 by 0.4? arcmin.

NGC 7609 (= PGC 71076)
Discovered (Oct 5, 1864) by
Albert Marth
A 14th-magnitude lenticular galaxy (type E/S0?) in Pegasus (RA 23 19 30.0, Dec +09 30 31)
Historical Identification: Per Dreyer, NGC 7609 (= GC 6182, Marth #570, 1860 RA 23 12 25, NPD 81 16) is "very faint, very small, gradually brighter middle".
Physical Information: Apparent size about 1.3 by 1.1? arcmin.

NGC 7610 (=
NGC 7616 = PGC 71087)
Discovered (August, 1880) by Andrew Common (and later listed as NGC 7610)
Discovered (August, 1880) by Andrew Common (and later listed as NGC 7616)
A 13th-magnitude spiral galaxy (type SBc?) in Pegasus (RA 23 19 41.6, Dec +10 11 04)
Historical Identification: Per Dreyer, NGC 7610 (Common (#30), 1860 RA 23 12 27, NPD 80 37) is "faint, small, diffuse".
Physical Information: Apparent size about 2.5 by 1.9? arcmin.

NGC 7611 (= PGC 71083)
Discovered (Sep 21, 1862) by
Heinrich d'Arrest
A 13th-magnitude lenticular galaxy (type SB0/a?) in Pisces (RA 23 19 36.5, Dec +08 03 49)
Historical Identification: Per Dreyer, NGC 7611 (= GC 4934, d'Arrest, 1860 RA 23 12 31, NPD 82 42.1) is "faint, small, round, in a triangle with two 19th magnitude stars to the north".
Physical Information: Apparent size about 1.5 by 0.7? arcmin.

NGC 7612 (= PGC 71089)
Discovered (May 26, 1863) by
Heinrich d'Arrest
Discovered (Sep 2, 1864) by Albert Marth
A 13th-magnitude lenticular galaxy (type S0?) in Pegasus (RA 23 19 44.1, Dec +08 34 37)
Historical Identification: Per Dreyer, NGC 7612 (= GC 6183, Marth #571, d'Arrest, 1860 RA 23 12 38, NPD 82 11.1) is "pretty bright, very small, round, brighter middle".
Physical Information: Apparent size about 1.6 by 0.8? arcmin.

NGC 7613
Recorded (1865) by
Gaspare Ferrari
A lost or nonexistent object in Pisces (RA 23 19 51.0, Dec +00 11 54)
Historical Identification: Per Dreyer, NGC 7613 (= GC 6184, Secchi (#3), 1860 RA 23 12 42, NPD 90 34.0) is "very faint".
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.

NGC 7614
Recorded (1865) by
Gaspare Ferrari
Four stars in Pisces (RA 23 19 52.6, Dec +00 10 56)
Historical Identification: Per Dreyer, NGC 7614 (= GC 6185, Secchi (#4), 1860 RA 23 12 50±, NPD 90 33) is "very faint, northeastern of 2", the other being NGC 7613.
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.

NGC 7615 (= PGC 71097)
Discovered (Aug 16, 1830) by
John Herschel
A 14th-magnitude spiral galaxy (type Sb?) in Pegasus (RA 23 19 54.4, Dec +08 23 58)
Historical Identification: Per Dreyer, NGC 7615 (= GC 4935 = JH 2229, 1860 RA 23 12 51, NPD 82 21.3) is "extremely faint, extremely small".
Physical Information: Apparent size about 0.9 by 0.4? arcmin.

NGC 7616 (=
NGC 7610 = PGC 71087)
Discovered (August, 1880) by Andrew Common (and later listed as NGC 7610)
Discovered (August, 1880) by Andrew Common (and later listed as NGC 7616)
A 13th-magnitude spiral galaxy (type SBc?) in Pegasus (RA 23 19 41.6, Dec +10 11 04)
Historical Identification: Per Dreyer, NGC 7616 (Common (#31), 1860 RA 23 12 55, NPD 80 38) is "pretty faint, diffuse".
Physical Information: Given the duplicate entry, see NGC 7610 for anything else.

NGC 7617 (= PGC 71113)
Discovered (Sep 23, 1864) by
Heinrich d'Arrest
Discovered (Nov 25, 1864) by Albert Marth
A 14th-magnitude lenticular galaxy (type S0?) in Pisces (RA 23 20 08.9, Dec +08 09 58)
Historical Identification: Per Dreyer, NGC 7617 (= GC 6186, d'Arrest, Marth #572, 1860 RA 23 13 00, NPD 82 36) is "extremely faint, very small".
Discovery Notes: Steinicke's Oct 2016 NGC/IC Historical database states that NGC 7617 was observed by Bindon Stoney on Aug 30, 1851; however, that is not listed in earlier versions of the database, and referring to the original historical records appears to show that this is an accidental duplication of the entry for NGC 7631 (which see); so I have asked Dr. Steinicke about the entry and will amend this note when I receive his reply.
Physical Information: Apparent size about 0.9 by 0.7? arcmin.

NGC 7618 (= PGC 71090)
Discovered (Oct 8, 1879) by
Édouard Stephan
A 13th-magnitude elliptical galaxy (type E2?) in Andromeda (RA 23 19 47.3, Dec +42 51 10)
Historical Identification: Per Dreyer, NGC 7618 (Stephan list X (#40), 1860 RA 23 13 09, NPD 47 54.8) is "faint, small, round, gradually brighter middle".
Physical Information: Apparent size about 1.2 by 1.0? arcmin.

NGC 7619 (= PGC 71121)
Discovered (Sep 26, 1785) by
William Herschel
Also observed (Aug 22, 1827) by John Herschel
Also observed (Aug 30, 1851) by Bindon Stoney
An 11th-magnitude elliptical galaxy (type E1?) in Pegasus (RA 23 20 14.6, Dec +08 12 25)
Historical Identification: Per Dreyer, NGC 7619 (= GC 4936 = JH 2230 = WH II 439, 1860 RA 23 13 10, NPD 82 33.7) is "considerably bright, pretty small, round, pretty suddenly brighter middle".
Discovery Notes: The reference to Stoney is based on his discovery of NGC 7631, in which he refers to the two nebulae to its west (NGC 7619 and 7626), and therefore must have observed them on the same evening (and may have observed them before, as well).
Physical Information: Apparent size about 2.5 by 2.3? arcmin.

NGC 7620 (= PGC 71106)
Discovered (Sep 5, 1864) by
Albert Marth
Discovered (1876) by Wilhelm Tempel
A 13th-magnitude spiral galaxy (type Sc?) in Pegasus (RA 23 20 05.6, Dec +24 13 15)
Historical Identification: Per Dreyer, NGC 7620 (= GC 6187, Marth #573, Tempel list I, 1860 RA 23 13 12, NPD 66 32.5) is "faint, small, very little extended".
Physical Information: Apparent size about 1.1 by 1.1? arcmin.

NGC 7621 (= PGC 71129)
Discovered (Nov 25, 1864) by
Albert Marth
A 15th-magnitude spiral galaxy (type S??) in Pegasus (RA 23 20 24.7, Dec +08 22 00)
Historical Identification: Per Dreyer, NGC 7621 (= GC 6188, Marth #574, 1860 RA 23 13 18, NPD 82 24) is "extremely faint, very small, stellar".
Physical Information: Apparent size about 0.7 by 0.2? arcmin.

NGC 7622 (= PGC 71187)
Discovered (Nov 1, 1834) by
John Herschel
A 13th-magnitude lenticular galaxy (type E/SB0?) in Tucana (RA 23 21 38.5, Dec -62 07 03)
Historical Identification: Per Dreyer, NGC 7622 (= GC 4937 = JH 3983, 1860 RA 23 13 21, NPD 152 53.5) is "extremely faint, extremely small, among 5 stars, doubtful".
Physical Information: Apparent size about 1.2 by 0.4? arcmin.

NGC 7623 (= PGC 71132)
Discovered (Sep 26, 1785) by
William Herschel
Also observed (Aug 16, 1830) by John Herschel
A 13th-magnitude lenticular galaxy (type S0?) in Pegasus (RA 23 20 29.9, Dec +08 23 47)
Historical Identification: Per Dreyer, NGC 7623 (= GC 4938 = JH 2231 = WH III 435, 1860 RA 23 13 25, NPD 82 22.2) is "faint, very small, round, pretty suddenly brighter middle".
Physical Information: Apparent size about 1.3 by 0.9? arcmin.

NGC 7624 (= PGC 71126)
Discovered (Oct 2, 1878) by
Édouard Stephan
Discovered (Aug 8, 1886) by Lewis Swift
A 13th-magnitude spiral galaxy (type SBc?) in Pegasus (RA 23 20 22.6, Dec +27 18 53)
Historical Identification: Per Dreyer, NGC 7624 (Stephan list IX (#36), Swift list IV (#94), 1860 RA 23 13 30, NPD 63 27.0) is "very faint, a little extended or irregularly round, diffuse, a very little brighter middle".
Physical Information: Apparent size about 1.0 by 0.7? arcmin.

NGC 7625 (= PGC 71133)
Discovered (Oct 15, 1784) by
William Herschel
Also observed (Oct 7, 1825) by John Herschel
A 12th-magnitude spiral galaxy (type Sa?) in Pegasus (RA 23 20 30.2, Dec +17 13 36)
Historical Identification: Per Dreyer, NGC 7625 (= GC 4939 = JH 2232 = WH II 250, 1860 RA 23 13 31, NPD 73 32.4) is "pretty bright, considerably small, round, suddenly much brighter middle".
Physical Information: Apparent size about 1.6 by 1.4? arcmin.

NGC 7626 (= PGC 71140)
Discovered (Sep 26, 1785) by
William Herschel
Also observed (Aug 22, 1827) by John Herschel
Also observed (Aug 30, 1851) by Bindon Stoney
An 11th-magnitude elliptical galaxy (type E1?) in Pegasus (RA 23 20 42.6, Dec +08 13 01)
Historical Identification: Per Dreyer, NGC 7626 (= GC 4940 = JH 2233 = WH II 440, 1860 RA 23 13 37, NPD 82 33.0) is "considerably bright, pretty small, round, pretty suddenly brighter middle".
Discovery Notes: The reference to Stoney is based on his discovery of NGC 7631, in which he refers to the two nebulae to its west (NGC 7619 and 7626), and therefore must have observed them on the same evening (and may have observed them before, as well).
Physical Information: Apparent size about 2.6 by 2.3? arcmin.

NGC 7627 (=
NGC 7641 = PGC 71241)
Discovered (Sep 24, 1873) by Édouard Stephan (and later listed as NGC 7641)
Discovered (Nov 18, 1886) by Lewis Swift (and later listed as NGC 7627)
Also observed (date?) by Herbert Howe
A 14th-magnitude spiral galaxy (type Sa?) in Pegasus (RA 23 22 30.8, Dec +11 53 37)
Historical Identification: Per Dreyer, NGC 7627 (Swift list VI (#95), 1860 RA 23 13 50, NPD 78 42.8) is "very faint, small, much extended, 2 stars to north". The second IC notes "7627 = 7641 (Swift and Howe)".
Physical Information: Apparent size about 1.7 by 0.5? arcmin.

NGC 7628 (= PGC 71153)
Discovered (Oct 4, 1878) by
Édouard Stephan
Discovered (Nov 9, 1884) by Lewis Swift
A 13th-magnitude elliptical galaxy (type E2?) in Pegasus (RA 23 20 55.0, Dec +25 53 55)
Historical Identification: Per Dreyer, NGC 7628 (Stephan list IX (#37), Swift list IV (#95), 1860 RA 23 14 02, NPD 64 52.0) is "very faint, small, round, brighter middle".
Physical Information: Apparent size about 1.1 by 0.9? arcmin.

NGC 7629 (= PGC 71175)
Discovered (Oct 19, 1864) by
Albert Marth
A 14th-magnitude lenticular galaxy (type S0?) in Pisces (RA 23 21 19.3, Dec +01 24 13)
Historical Identification: Per Dreyer, NGC 7629 (= GC 6189, Marth #575, 1860 RA 23 14 09, NPD 89 22) is "very faint, very small, stellar".
Physical Information: Apparent size about 1.0 by 0.8? arcmin.

NGC 7630 (= PGC 71176)
Discovered (Aug 8, 1880) by
Andrew Common
A 14th-magnitude spiral galaxy (type S??) in Pegasus (RA 23 21 16.3, Dec +11 23 51)
Historical Identification: Per Dreyer, NGC 7630 (Common (#32), 1860 RA 23 14, NPD 79 20) is "faint, small".
Physical Information: Apparent size about 1.1 by 0.4? arcmin.

NGC 7631 (= PGC 71181)
Discovered (Aug 30, 1851) by
Bindon Stoney
Discovered (Sep 21, 1862) by Heinrich d'Arrest
A 13th-magnitude spiral galaxy (type Sb?) in Pegasus (RA 23 21 26.7, Dec +08 13 03)
Historical Identification: Per Dreyer, NGC 7631 (= GC 4942 = GC 4943, 3rd Lord Rosse, d'Arrest, 1860 RA 23 14 22, NPD 82 33.0) is "very faint, very small".
Discovery Notes: (1) 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.
(2) Stoney's observation (as recorded in the 1861 summary of the 3rd Lord Rosse's observations) reads "{(JH) 2230 & 2231} Aug. 30, 1851. Another nebula about 12' east of 2231, which is extended east and west." However, "2231" (= NGC 7623) is too faint and too far north to fit the supposed observation and must be an erroneous transcription of "2233" (= NGC 7626), which has a perfect position and appearance, being just east of "2230" and very similar to it. (Dreyer must realized the error in the 1861 paper, as the NGC position corresponds to a location 12' east of (JH) 2233.)
(3) Steinicke's Oct 2016 NGC/IC Historical database appears to inadvertently place a duplicate of Stoney's observation in the credits for NGC 7617. Earlier versions of the database do not contain that entry, and Stoney's observation (in Note 2 immediately above) cannot be reconciled with an observation of NGC 7617. I have asked him about the apparent error, and will amend this note when I receive his reply.
Physical Information: Apparent size about 1.7 by 0.7? arcmin.
SDSS image of region near spiral galaxy NGC 7631
Above, a 12 arcmin wide SDSS image centered on NGC 7631
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of spiral galaxy NGC 7631

NGC 7632 (=
IC 5313 = PGC 71213)
Discovered (Sep 5, 1834) by John Herschel (and later listed as NGC 7632)
Discovered (Aug 8, 1897) by Lewis Swift (and later listed as IC 5313)
A 12th-magnitude lenticular galaxy (type SB0?) in Grus (RA 23 22 00.9, Dec -42 28 49)
Historical Identification: Per Dreyer, NGC 7632 (= GC 4944 = JH 3985, 1860 RA 23 14 22, NPD 133 14.9) is "faint, small, round, a little brighter middle".
Physical Information: Apparent size about 2.4 by 1.2? arcmin. Most of the fainter galaxies in its immediate neighborhood are part of a far more distant cluster, and have nothing to do with NGC 7632.
DSS image of region near lenticular galaxy NGC 7632
Above, a 12 arcmin wide DSS image centered on NGC 7632
Below, a 3 arcmin wide DSS image of the galaxy
DSS image of lenticular galaxy NGC 7632

NGC 7633 (= PGC 71274)
Discovered (Nov 2, 1834) by
John Herschel
A 12th-magnitude spiral galaxy (type (R)SB(r)0/a) in Indus (RA 23 23 03.1, Dec -67 39 13)
Historical Identification: Per Dreyer, NGC 7633 (= GC 4945 = JH 3986, 1860 RA 23 14 31, NPD 158 25.8) is "faint, very small, extended 90°, pretty suddenly brighter middle".
Physical Information: Apparent size about 2.5 by 2.0? arcmin, including its outer ring. Used by the de Vaucouleurs Atlas of Galaxy Types as an example of galaxy type (R1)SB(r)0+.
DSS image of region near spiral galaxy NGC 7633
Above, a 12 arcmin wide DSS image centered on NGC 7633
Below, a 3 arcmin wide DSS image of the galaxy
DSS image of spiral galaxy NGC 7633

NGC 7634 (= PGC 71192)
Discovered (Sep 26, 1785) by
William Herschel
Also observed (Aug 16, 1830) by John Herschel
A 13th-magnitude lenticular galaxy (type SB0?) in Pegasus (RA 23 21 41.7, Dec +08 53 15)
Historical Identification: Per Dreyer, NGC 7634 (= GC 4946 = JH 2234 = WH II 441, 1860 RA 23 14 36, NPD 81 53.0) is "faint, small, faint double star attached".
Physical Information: Apparent size about 1.2 by 0.9? arcmin.

NGC 7635, the Bubble Nebula
Discovered (Nov 3, 1787) by
William Herschel
Also observed (Sep 30, 1829) by John Herschel
An emission nebula in Cassiopeia (RA 23 20 45.0, Dec +61 12 42)
Historical Identification: Per Dreyer, NGC 7635 (= GC 4947 = JH 2235 = WH IV 52, 1860 RA 23 14 36, NPD 29 34.3) is "very faint, 8th magnitude star involved, a little eccentric".
Physical Information: Apparent size about 15 by 8? arcmin.
Misti Mountain Observatory wide-field image of NGC 7635, the Bubble Nebula
Above, a 12 by 18 arcmin wide image of the region near NGC 7635
(Image Credit & © above and below Jim Misti, Misti Mountain Observatory; used by permission)
Below, an 8 arcmin wide image of the emission nebula
Misti Mountain Observatory image of NGC 7635, the Bubble Nebula
Below, an HST image superimposed on a 3 arcmin wide field of view
(Image Credit Donald Walter (SCSU) et al., WFPC2, HST, NASA)
HST closeup of NGC 7635, the Bubble Nebula, superimposed on a Misti Mountain Observatory background image

NGC 7636 (= PGC 71245)
Discovered (Sep 28, 1834) by
John Herschel
A 14th-magnitude lenticular galaxy (type S0?) in Sculptor (RA 23 22 33.1, Dec -29 16 51)
Historical Identification: Per Dreyer, NGC 7636 (= GC 4948 = JH 3987, 1860 RA 23 15 04, NPD 120 02.7) is "extremely faint, small, round, suddenly brighter middle".
Physical Information: Apparent size about 0.9 by 0.6? arcmin.

NGC 7637 (= PGC 71440)
Discovered (Oct 17, 1835) by
John Herschel
A 13th-magnitude spiral galaxy (type Sc?) in Octans (RA 23 26 28.3, Dec -81 54 40)
Historical Identification: Per Dreyer, NGC 7637 (= GC 4949 = JH 3984, 1860 RA 23 15 06, NPD 172 40.3) is "very faint, pretty large, round, a very little brighter middle, star near".
Physical Information: Apparent size about 2.1 by 1.9? arcmin.
DSS image of region near spiral galaxy NGC 7637
Above, a 12 arcmin wide DSS image centered on NGC 7637
Below, a 3 arcmin wide DSS image of the galaxy
DSS image of spiral galaxy NGC 7637

NGC 7638 (=
IC 1483 = PGC 71246)
Discovered (Aug 8, 1880) by Andrew Common (and later listed as NGC 7638)
Discovered (Dec 2, 1893) by Stephane Javelle (and later listed as IC 1483)
A 15th-magnitude spiral galaxy (type S??) in Pegasus (RA 23 22 33.0, Dec +11 19 46)
Historical Identification: Per Dreyer, NGC 7638 (Common (#32), 1860 RA 23 15 20±, NPD 79 40±) is "(one of) 2 nebulae, faint, small", the other being NGC 7639.
Physical Information: Apparent size about 0.6 by 0.6? arcmin.

NGC 7639 (=
IC 1485 = PGC 71256)
Discovered (Aug 8, 1880) by Andrew Common (and later listed as NGC 7639)
Discovered (Dec 2, 1893) by Stephane Javelle (and later listed as IC 1485)
A 15th-magnitude lenticular galaxy (type E/S0?) in Pegasus (RA 23 22 48.2, Dec +11 22 24)
Historical Identification: Per Dreyer, NGC 7639 (Common (#32), 1860 RA 23 15 20±, NPD 79 40±) is "(one of) 2 nebulae, faint, small", the other being NGC 7638.
Physical Information: Apparent size about 0.5 by 0.4? arcmin.

NGC 7640 (= PGC 71220)
Discovered (Oct 6, 1784) by
William Herschel
Also observed (Sep 18, 1828) by John Herschel
An 11th-magnitude spiral galaxy (type SBc?) in Andromeda (RA 23 22 06.6, Dec +40 50 42)
Historical Identification: Per Dreyer, NGC 7640 (= GC 4950 = JH 2236 = WH II 600, 1860 RA 23 15 24, NPD 49 54.8) is "considerably faint, large, much extended 164°, very little brighter middle, mottled but not resolved".
Physical Information: Apparent size about 10.5 by 1.8? arcmin.
DSS image of region near spiral galaxy NGC 7640
Above, a 24 arcmin wide DSS image centered on NGC 7640
Below, a 13 arcmin wide DSS image of the galaxy
DSS image of spiral galaxy NGC 7640
Below, a ? arcmin wide HST image of the core of the galaxy (Image Credit Hubble Legacy Archive)
HST image of spiral galaxy NGC 7640
Below, the HST image is overlaid on 13 arcmin wide image to show the region it covers
HST image of the core of spiral galaxy NGC 7640, overlaid on a DSS image to show the location of the HST image

NGC 7641 (=
NGC 7627 = PGC 71241)
Discovered (Sep 24, 1873) by Édouard Stephan (and later listed as NGC 7641)
Discovered (Nov 18, 1886) by Lewis Swift (and later listed as NGC 7627)
Also observed (date?) by Herbert Howe
A 14th-magnitude spiral galaxy (type Sa?) in Pegasus (RA 23 22 30.8, Dec +11 53 37)
Historical Identification: Per Dreyer, NGC 7641 (= GC 6190, Stephan list V (#11), 1860 RA 23 15 27, NPD 78 52.4) is "very faint, small, irregularly round, diffuse, a little brighter middle". The second IC notes "7627 = 7641 (Swift and Howe)".
Physical Information: Given the duplicate entry, see NGC 7627 for anything else.

NGC 7642 (= PGC 71264)
Discovered (Oct 19, 1864) by
Albert Marth
A 14th-magnitude spiral galaxy (type Sa?) in Pisces (RA 23 22 53.4, Dec +01 26 34)
Historical Identification: Per Dreyer, NGC 7642 (= GC 6191, Marth #576, 1860 RA 23 15 43, NPD 89 20) is "very faint, very small, brighter middle".
Physical Information: Apparent size about 0.6 by 0.5? arcmin.

NGC 7643 (=
NGC 7644 = PGC 71261)
Discovered (Sep 24, 1873) by Édouard Stephan (and later listed as NGC 7643)
Discovered (Nov 29, 1886) by Lewis Swift (and later listed as NGC 7644)
A 13th-magnitude spiral galaxy (type S??) in Pegasus (RA 23 22 50.4, Dec +11 59 19)
Historical Identification: Per Dreyer, NGC 7643 (= GC 6192, Stephan list V (#12), 1860 RA 23 15 47, NPD 78 47.0) is "faint, pretty small, irregularly round, diffuse, a little brighter middle".
Physical Information: Apparent size about 1.4 by 0.7? arcmin.

NGC 7644 (=
NGC 7643 = PGC 71261)
Discovered (Sep 24, 1873) by Édouard Stephan (and later listed as NGC 7643)
Discovered (Sep 29, 1886) by Lewis Swift (and later listed as NGC 7644)
A 13th-magnitude spiral galaxy (type S??) in Pegasus (RA 23 22 50.4, Dec +11 59 19)
Historical Identification: Per Dreyer, NGC 7644 (Swift list V (#100), 1860 RA 23 16 10, NPD 76 47.3) is "very faint, pretty small, a little extended".
Physical Information: Given the duplicate entry, see NGC 7643 for anything else.

NGC 7645 (= PGC 71314)
Discovered (Sep 27, 1834) by
John Herschel
A 13th-magnitude spiral galaxy (type SBc?) in Sculptor (RA 23 23 47.4, Dec -29 23 17)
Historical Identification: Per Dreyer, NGC 7645 (= GC 4951 = JH 3988, 1860 RA 23 16 18, NPD 120 08.9) is "very faint, small, round, gradually a little brighter middle".
Physical Information: Apparent size about 1.5 by 1.2? arcmin.

NGC 7646 (=
IC 5318 = PGC 71338)
Discovered (1886) by Frank Muller (and later listed as NGC 7646)
Discovered (Sep 28, 1897) by Herbert Howe (and later recorded as IC 5318)
A 13th-magnitude spiral galaxy (type Sc?) in Aquarius (RA 23 24 06.9, Dec -11 51 37)
Historical Identification: Per Dreyer, NGC 7646 (Muller list II (#474), 1860 RA 23 16 25, NPD 102 45.8) is "very faint, very small, extended 260° (nebulosity?), 9th magnitude star 3.6 arcmin to north".
Physical Information: Apparent size about 0.9 by 0.6? arcmin.

NGC 7647 (= PGC 71325 = PGC 71335)
Discovered (Nov 29, 1785) by
William Herschel
A 14th-magnitude elliptical galaxy (type E3?) in Pegasus (RA 23 23 57.4, Dec +16 46 40)
Historical Identification: Per Dreyer, NGC 7647 (= GC 4952 = WH III 473, 1860 RA 23 16 48, NPD 74 00.3) is "extremely faint, considerably large (?), a row of stars to west".
Physical Information: Apparent size about 1.4 by 1.0? arcmin.

NGC 7648 (=
IC 1486 = PGC 71321)
Discovered (Oct 18, 1784) by William Herschel (and later listed as NGC 7648)
Also observed (Oct 2, 1866) by Heinrich d'Arrest (and later listed as NGC 7648)
Also observed (Oct 3, 1878) by Édouard Stephan (and later listed as NGC 7648)
Discovered (Oct 1, 1885) by Guillaume Bigourdan (and later listed as IC 1486)
A 13th-magnitude lenticular galaxy (type S0?) in Pegasus (RA 23 23 54.2, Dec +09 40 06)
Historical Identification: Per Dreyer, NGC 7648 (= GC 4953 = WH III 218, d'Arrest, Stephan list IX (#38), 1860 RA 23 16 48, NPD 81 05.9) is "very faint, pretty small, a little extended, brighter middle".
Physical Information: Apparent size about 1.6 by 1.0? arcmin.

NGC 7649 (=
IC 1487 = PGC 71343)
Discovered (Nov 25, 1886) by Lewis Swift (and later listed as NGC 7649)
Discovered (Oct 15, 1887) by Lewis Swift (and later listed as IC 1487)
A 14th-magnitude elliptical galaxy (type E2?) in Pegasus (RA 23 24 20.1, Dec +14 38 49)
Historical Identification: Per Dreyer, NGC 7649 (Swift list VI (#96), 1860 RA 23 17 15, NPD 76 07.2) is "very faint, pretty large, round".
Physical Information: Apparent size about 1.3 by 1.0? arcmin. The largest and brightest member of (650 million light year distant?) galaxy cluster Abell 2593 (there is also a much more distant cluster in the same general direction).
SDSS image of region near elliptical galaxy NGC 7649Above, a 12 arcmin wide SDSS image centered on NGC 7649
Below, a 2.4 arcmin wide SDSS image of the galaxy
SDSS image of elliptical galaxy NGC 7649
Celestial Atlas
(NGC 7550 - 7599) ←     NGC Objects: NGC 7600 - 7649     → (NGC 7650 - 7699)