Historical Identification: Per Dreyer, NGC 700 (= GC 423, 3rd Lord Rosse, 1860 RA 01 44 08, NPD 54 35) is "extremely faint, very small, round, southwest of h 157", (JH) 157 being NGC 703. Often misidentified as PGC 6924.
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: Apparent size 0.8 by 0.7 arcmin?

Historical Misidentification: See the discussion at the entry for the correct NGC 700.
Physical Information:

Historical Identification: Per Dreyer, NGC 701 (= GC 418 = JH 160 = JH 2442 = WH I 62, 1860 RA 01 44 08, NPD 100 23.8) is "faint, pretty large, extended, very gradually very little brighter middle, mottled but not resolved".
Physical Information: Apparent size 2.6 by 1.4 arcmin?

Historical Identification: Per Dreyer, NGC 702 (= GC 419 = JH 158 = WH III 192, 1860 RA 01 44 17, NPD 94 45.0) is "extremely faint, very little extended 0°, 13th magnitude star 90 arcsec to south".
Physical Information: Based on a recessional velocity of 10585 km/sec, a straightforward calculation indicates that NGC 702 is about 495 million light years away. However, for objects at such distances we should take into account the Universal expansion during the time it took their light to reach us. Doing that shows that the galaxy was a little less than 475 million light years away at the time the light by which we see it was emitted, about 480 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 1.2 by 0.8 arcmin, NGC 702 is about 165 thousand light years across. Arp's Atlas plate for Arp 75 shows no companion near the galaxy; its listing as a spiral galaxy with a small high brightness companion appears to be due to the mottled appearance the galaxy presented on the plate. A review of other images suggests that at low brightness levels, the bright emission regions on the northern side of the galaxy can appear to be a separate object, and perhaps that is what Arp had in mind in assigning the listing. However, the image below makes it clear that there is only a single object involved, namely NGC 702 itself.

Historical Identification: Per Dreyer, NGC 703 (= GC 422 = JH 157 = WH III 562, 1860 RA 01 44 25, NPD 54 31.4) is "very faint, very small, round, 1st of 4", the others being NGC 704, 705 and 708.
Physical Information: Apparent size 0.9 by 0.7 arcmin?

Historical Identification: Per Dreyer, NGC 704 (= GC 420, WH III 563, 1860 RA 01 44 26, NPD 54 33.7) is "very faint, very small, round, 2nd of 4", the others being NGC 703, 705 and 708.
Physical Information: Based on a recessional velocity of 4730 km/sec, NGC 704 is about 220 million light years away. Given that and its apparent size of 0.6 by 0.3 arcmin, it is about 40 thousand light years across. Its apparent companion (PGC 197601) is too faint to make any difference in the visual appearance of the pair, and is usually called "NGC 704B", instead of being considered part of the original NGC listing.

Physical Information: PGC 197601 is an apparent companion of NGC 704 (which see for images). Whether they constitute a physical pair is less certain. They are members of Abell 262, a cluster of galaxies in which a relatively large number of galaxies lie in a relatively small field of view, so it would hardly be surprising if one or more galaxies appeared to overlap even if not physically paired. However, the nebulosity that surrounds the pair and a fainter object to their southeast suggests that they may be interacting. NED lists essentially identical radial velocities for the pair, but LEDA lists a substantially lower recessional velocity (4085 km/sec) for PGC 197601, albeit with a very large uncertainty. So they could be a pair, or merely an optical double. Either way they are probably at nearly the same (about 220 million light year) distance from us, and if so PGC 197601's apparent size of 0.2 by 0.2 arcmin would correspond to about 12 thousand light years.

Discovery Notes: Recorded as object "B" in Lord Rosse's diagram of the NGC 708 group, sketched on Oct 7, 1855, with the note "B is suspected to be a nebula". But although also observed by Dreyer twenty years later, the fact that it was not included in the General Catalog by John Herschel apparently dissuaded Dreyer from adding it to the NGC, either. Lord Rosse's sketch and note were pointed out by Steve Gottlieb, and as a result, Corwin added it to his "notngc" list. Given its position to the west of NGC 703 and 704, if it had been included in the NGC it would have had an entry a little earlier on this page.
Physical Information: Recessional velocity 4295 km/sec. Apparent size 0.25 by 0.2 arcmin? Generally presumed to be a member of Abell 262, and sometimes incorrectly listed as the companion of NGC 704.

Historical Identification: Per Dreyer, NGC 705 (= GC 421 = WH III 564, 1860 RA 01 44 29, NPD 54 33.4) is "very faint, very small, round, 3rd of 4", the others being NGC 703, 704 and 708.
Physical Information: Apparent size 1.2 by 0.3 arcmin?

Historical Identification: Per Dreyer, NGC 706 (= GC 426 = JH 161 = WH II 596, 1860 RA 01 44 31, NPD 84 23.8) is "faint, small, brighter middle, 13th magnitude star 1 arcmin to north".
Physical Information: Apparent size 1.9 by 1.5 arcmin?

Historical Identification: Per Dreyer, NGC 707 (Tempel list IV (#6), 1860 RA 01 44 31, NPD 99 12.0) is "very faint, faint star in centre".
Physical Information: Apparent size 1.3 by 0.9 arcmin? (Note: On DSS images it appears as though there is a compact companion overlapping the galaxy's nucleus on its southeastern side; as noted by Tempel and shown below, it is actually a foreground star.)

Historical Identification: Per Dreyer, NGC 708 (= GC 427 = JH 159 = WH III 565, 1860 RA 01 44 34, NPD 54 32.3) is "faint, pretty large, brighter middle, 4th of 4", the others being NGC 703, 704 and 705.
Physical Information: Apparent size 2.35 by 1.6 arcmin (from images below)

Historical Identification: Per Dreyer, NGC 709 (= GC 5195, Dreyer (using Lord Rosse's 72-inch telescope), 1860 RA 01 44 35, NPD 54 28.6) is "very faint, pretty small, between 2 stars, group to southwest", the "group" being NGC 703, 704, 705 and 708.
Discovery Notes: Steinicke lists Stoney as the discoverer, presumably on the basis of a detailed examination of the 3rd Lord Rosse's observational records; but since Dreyer listed himself as the discoverer, he must have been unaware of the earlier observation. It will take some research to unravel the details of this mystery, so it will be put off till the next iteration of this page.
Physical Information: Apparent size 1.0 by 0.5 arcmin?

Historical Identification: Per Dreyer, NGC 710 (= GC 5196, 3rd Lord Rosse, d'Arrest, 1860 RA 01 44 45, NPD 54 38.2) is "very faint, pretty small, 2 stars to south".
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: Apparent size 1.3 by 1.2 arcmin?

Historical Identification: Per Dreyer, NGC 711 (Stephan list XII (#19), 1860 RA 01 44 52, NPD 73 10.8) is "very faint star in very faint, very small nebulosity".
Physical Information: Apparent size 1.6 by 0.7 arcmin?

Historical Identification: Per Dreyer, NGC 712 (= GC 429 = JH 163, 1860 RA 01 44 54, NPD 53 52.5) is "very faint, round, among pretty bright stars".
Physical Information: Apparent size 1.0 by 0.6 arcmin?

Historical Identification: 55 And (= GC 428 = JH 162, 1860 RA 01 44 56, NPD 49 57.7) is a "fine nebulous star with strong atmosphere".
Discovery Note: Here is the text of Corwin's "notngc" entry: "h 162 is 55 And. JH claims to have seen it as "A fine nebulous * with a strong atmosphere losing itself imperceptibly; diam 90 [arcsec]." He goes on to note that it is a double star, and was called "nebulosa" by Piazzi. However, by the time the GC was compiled, LdR had looked at the star eight times without seeing any nebulosity. JH noted this, but "retained [the star] for occasional future examination." By the time Dreyer pulled together LdR's "complete" observations, the star had been viewed 11 times with the 72-inch without detecting any nebulosity. He adds a note "It has probably never been nebulous, see Schjellerup Astron. Nachr. No. 1613, comp. Phil. Trans. 1833, p. 499-500." So Dreyer omitted the object from the NGC. I see no verifiable trace of nebulosity around 55 And's image on any of the sky survey plates/scans, so have to agree with Dreyer's omitting the object from NGC."
Additional Notes: (1) Of the eleven observations attributed to Lord Rosse, most were probably done by one assistant or another, but in any event they were carried out over a number of years, always without finding any hint of nebulosity. (2) I have placed the entry here because Herschel's GC entry showed an 1860 RA of 01 44 56, placing it between NGC 712 and NGC 713.

Historical Identification: Per Dreyer, NGC 713 (Leavenworth list II (#320), 1860 RA 01 45 07, NPD 99 47.0) is "extremely faint, pretty small, extended 90°, gradually a little brighter middle and nucleus, 14th magnitude star to northwest".
Physical Information: Apparent size 1.0 by 0.3 arcmin?

Historical Identification: Per Dreyer, NGC 714 (= GC 5197, 3rd Lord Rosse, d'Arrest, 1860 RA 01 45 18, NPD 54 28.1) is "faint, very small, round, two 13th magnitude stars to west and northwest".
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: Apparent size 1.5 by 0.4 arcmin?

Historical Identification: Per Dreyer, NGC 710 (Ormond Stone list I (#38), 1860 RA 01 45 30, NPD 103 31.0) is "extremely faint, small, gradually brighter middle and nucleus". The second Index Catalog lists a corrected RA (per Howe) of 01 46 23.
Physical Information: Apparent size 0.8 by 0.4 arcmin?

Historical Identification: Per Dreyer, NGC 716 (Swift list IV (#6), 1860 RA 01 45 30, NPD 78 38.6) is "extremely faint, small, round, bright star to east". The second Index Catalog states "Not found by B (Bigourdan). Query, = B250 (IC 1743)". As it turned out, the query was justified.
Physical Information: Apparent size 1.8 by 0.8 arcmin?

Historical Identification: Per Dreyer, NGC 717 (= GC 5198, 3rd Lord Rosse, d'Arrest, 1860 RA 01 45 41, NPD 54 28.0) is "very faint, pretty small, 15th magnitude star 1 arcmin to southeast".
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: Apparent size 1.3 by 0.2 arcmin?

Historical Identification: Per Dreyer, NGC 718 (= GC 430 = JH 164 = WH II 270, 1860 RA 01 45 57, NPD 86 29.8) is "pretty bright, small, irregularly round, pretty suddenly much brighter middle".
Physical Information: Apparent size 2.3 by 2.2 arcmin? Used by the de Vaucouleurs Atlas of Galaxies as an example of galaxy type (R')SAB(rs)a .

Historical Identification: Per Dreyer, NGC 719 (= GC 432, d'Arrest, 1860 RA 01 46 11, NPD 70 50.3) is "extremely faint, round, very faint star to east".
Physical Information: Apparent size 1.4 by 1.1 arcmin?

Historical Identification: Per Dreyer, NGC 720 (= GC 431 = JH 165 = JH 2443 = WH I 105, 1860 RA 01 46 12, NPD 104 25.8) is "considerably bright, pretty large, a little extended, pretty suddenly much brighter middle".
Physical Information: Apparent size 4.7 by 2.4 arcmin? Used by the de Vaucouleurs Atlas of Galaxies as an example of galaxy type E5.

Historical Identification: Per Dreyer, NGC 721 (= GC 433, d'Arrest, 1860 RA 01 46 32, NPD 51 18.3) is "extremely faint, pretty large".
Physical Information: Apparent size 1.7 by 1.0 arcmin?

Historical Identification: Per Dreyer, NGC 722 (= GC 434, d'Arrest, 1860 RA 01 47 04, NPD 69 59.6) is "very faint, very small, round, β Arietis to north".
Physical Information: Apparent size 1.7 by 0.5 arcmin?

Historical Identification: Per Dreyer, NGC 723 (= GC 435 = JH 166 = JH 2444 = WH III 460, 1860 RA 01 47 14, NPD 114 26.8) is "pretty faint, very small, round, very gradually brighter middle".
Physical Information: Apparent size 1.5 by 1.3 arcmin?

Historical Identification: Per Dreyer, NGC 724 (= GC 436 = JH 167, 1860 RA 01 47 15, NPD 114 33.4) is "very faint, pretty large, round, gradually bright middle, small (faint) star to south southwest [? = h 166]", (JH) 166 being NGC 723; as it turned out, Dreyer's supposition that NGC 724 might be a duplicate of NGC 723 was correct.
Physical Information: Given the duplicate entry, see NGC 723 for anything else.

Historical Identification: Per Dreyer, NGC 725 (Leavenworth list I (#39), 1860 RA 01 47 30, NPD 107 13.9) is "very faint, very small, round". The second Index Catalog lists a corrected RA (per Howe) of 01 45 51.
Physical Information: Apparent size 0.8 by 0.5 arcmin?

Historical Identification: Per Dreyer, NGC 726 (Muller list I (#40), 1860 RA 01 47 30, NPD 101 29.9) is "very faint, pretty large, irregularly round, 9th magnitude star 3 arcmin to east".
Physical Information: Apparent size 1.2 by 0.6 arcmin?

Historical Identification: Per Dreyer, NGC 727 (= GC 437 = JH 2445, 1860 RA 01 47 43, NPD 126 34.4) is "faint, small, round, brighter middle".
Physical Information: Apparent size 1.1 by 0.6 arcmin?

Historical Identification: Per Dreyer, NGC 728 (= GC 438 = JH 168, 1860 RA 01 47 48, NPD 86 29.2) is a "suspected nebula (d'Arrest, not found)".
Physical Information:

(Historical Identification: Per Dreyer, NGC 729 (= GC 439 = JH 2446, 1860 RA 01 47 50, NPD 126 32.0) is "most extremely faint, small, round".
Physical Information: Given the duplicate entry, see NGC 727 for anything else.

Historical Identification: Per Dreyer, NGC 730 (Bigourdan (list I #11), 1860 RA 01 48 00, NPD 85 04.0) is "very faint, very stellar".
Physical Information:

Historical Identification: Per Dreyer, NGC 731 (= GC 440 = WH III 266, Peters, 1860 RA 01 48 01, NPD 99 42.0) is "extremely faint, stellar".
Physical Information: Apparent size 1.7 by 1.7 arcmin?

Historical Identification: Per Dreyer, NGC 732 (Stephan list XIII (#15), 1860 RA 01 48 13, NPD 53 53.2) is "a very faint star in very faint, very small, round nebulosity".
Physical Information: Apparent size 1.4 by 1.0 arcmin?

Historical Identification: Per Dreyer, NGC 733 (= GC 442, 3rd Lord Rosse, 1860 RA 01 48 26, NPD 57 38.3) is "very faint, 2 arcmin west of h 169", (JH) 169 being NGC 736. Though the star listed above is the most likely NGC 733, PGC 7255 is also often identified as NGC 733, so it is discussed immediately below.
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:

Historical Identification: Considered unlikely to be NGC 733, but occasionally (mis?)identified as such. (Note: NED shows the star listed above as NGC 733, but incorrectly identifies it as PGC 7255. It lists this galaxy as 2MASX J01562472+3303524, but gives absolutely no information about it. LEDA shows PGC 7255 as the galaxy listed here, but does not identify it as NGC 733, and provides no information save its position, approximate brightness, and approximate size.)
Physical Information: Apparent size of about 0.5 by 0.15 arcmin (from the images below); nothing else available.

Historical Identification: Per Dreyer, NGC 734 (Leavenworth list I (#41), 1860 RA 01 48 30, NPD 107 42.9) is "very faint, very small, round, brighter middle and nucleus, 11th magnitude star 11 seconds of time to west". (Note: Often misidentifed as PGC 7121; so a Wikisky search for NGC 734 incorrectly shows that object, instead of PGC 170023.)
Physical Information: Apparent size 0.7 by 0.5 arcmin?

Historical Misidentification: As noted in the entry for NGC 734, often misidentified as that object.
Physical Information: Based on a recessional velocity of 14895 km/sec, a straightforward calculation indicates that PGC 7121 is 695 million light years away. However, for objects at such distances we should take into account the Universal expansion during the time it took their light to reach us. Doing that shows that the galaxy was about 655 million light years away at the time the light by which we see it was emitted, about 670 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 0.55 by 0.3 arcmin, the galaxy is about 100 thousand light years across. (LEDA says galaxy type SB0/a, and any detailed classification seems uncertain without better images than those shown below.)

Historical Identification: Per Dreyer, NGC 735 (= GC 443 = WH III 176, 1860 RA 01 48 33, NPD 56 23.1) is "most extremely faint, stellar". (Note: A Wikisky search for NGC 735 shows the correct object, but labeled PGC 7275.)
Physical Information: Apparent size 1.8 by 0.8 arcmin?

Historical Identification: Per Dreyer, NGC 736 (= GC 444 = JH 169 = WH II 221?, 1860 RA 01 48 35, NPD 57 38.9) is "pretty bright, round, brighter middle".
Physical Information: Apparent size of central region about 1.65 by 1.65 arcmin; of outer shell, about 4.1 by 3.1 arcmin (from images below).

Historical Identification: Per Dreyer, NGC 737 (= GC 445, 3rd Lord Rosse, 1860 RA 01 48 36, NPD 57 38.4) is a "stellar nebula (perhaps a faint star?), 27 arcsec north of h 169", (JH 169) being NGC 736. The first Index Catalog notes (per Burnham) "Only a faint star".
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: A line of three stars overlapping NGC 736, the northeastern actually being double, making a total of four stars.

Historical Identification: Per Dreyer, NGC 738 (= GC 446, 3rd Lord Rosse, 1860 RA 01 48 38, NPD 57 38.0) is a "nebula, 75 arcsec northeast of h 169", (JH) 169 being NGC 736.
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: Apparent size 0.4 by 0.2 arcmin?

Historical Identification: Per Dreyer, NGC 739 (= GC 5199, Copeland using Lord Rosse's 72-inch telescope, 1860 RA 01 48 47, NPD 57 32.0) is "considerably faint, very small, round, in triangle of stars".
Physical Information: Apparent size 0.9 by 0.6 arcmin?

Historical Identification: Per Dreyer, NGC 740 (= GC 447, WH II 221?, 3rd Lord Rosse, 1860 RA 01 48 48, NPD 57 40.3) is "faint, large, considerably extended".
Discovery Notes: Dreyer (and the GC) equated WH II 221? with both NGC 736 and NGC 740, and obviously one of those must be wrong. Current opinion is that NGC 736 is what Herschel observed, hence the dubious reference to his possible observation immediately above. Also, 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: Apparent size 1.4 by 0.3 arcmin?

Historical Identification: Per Dreyer, NGC 741 (= GC 448 = JH 172 = WH II 271, 1860 RA 01 49 04, NPD 85 03.5) is "pretty faint, small, round, western of 2, position angle 102°", the eastern of 2 being NGC 742. The position precesses to RA 01 56 22.5, Dec +05 37 44, essentially dead center on the galaxy listed above, the description fits and the relative position of NGC 741 and 742 make the identification certain.
Discovery Notes: The IC2 position and description of IC 1751 make its identification as the same galaxy (and therefore a duplicate entry) equally certain, so the duplicate entry must have been due to a simple oversight on the part of Swift, Howe and Dreyer. Despite this, PGC 7250 is often misidentifed IC 1751, so it is also shown in the images below, and discussed immediately following the entry for IC 1751.
Physical Information: Apparent size 3.0 by 2.9 arcmin?

Historical Identification: Per Dreyer, NGC 742 (= GC 449 = JH 173 = WH II 272, 1860 RA 01 49 08, NPD 85 03.7) is "very faint, very small, round, suddenly brighter middle, eastern of 2", the other being NGC 741.
Physical Information: Apparent size 0.35 by 0.35 arcmin (from image below).

Historical Identification: Per Dreyer, NGC 743 (= GC 450 = JH 170, 1860 RA 01 49 08, NPD 30 30.8) is "a cluster, not rich, double star (h 1098)". The reference to (JH) 1098 is not to Herschel's list of nebular observations, but to his list of double stars. Per Corwin, Herschel's 1830 position precesses to J2000 RA 01 58 49.2, Dec +60 10 19, almost exactly on the double star at J2000 RA 01 58 50.2, Dec +60 10 24, and about 1.8 arcmin east of the center of the cluster, as shown in the image below.
Physical Information: Apparent size 7.0 arcmin?

Historical Identification: Per Dreyer, NGC 744 (= GC 451 = JH 171, 1860 RA 01 49 08, NPD 35 13.2) is "a cluster, pretty large, pretty rich, irregular figure, stars from 11th through 13th magnitude".
Physical Information: Apparent size 5.0 arcmin?

Historical Identification: Per Dreyer, NGC 745 (= GC 452 = JH 2449, 1860 RA 01 49 12, NPD 147 22.7) is "pretty bright, small, round, gradually brighter middle".
Physical Information: Apparent size 0.7 by 0.45 arcmin (from images below). Vr = 6075 km/sec. Part of a group (confirmed by radial velocities) with PGC 95386 and J015407.7-564116.

Physical Information: Apparent size 0.4 by 0.2 arcmin (from images for NGC 745). Vr 6070 km/sec. Misidentified in NED. Part of a radial-velocity confirmed group with NGC 745, which see for images.

Physical Information: Apparent size 0.15 by 0.15 arcmin (from images for NGC 745). Vr 6275 km/sec. Misidentified in NED as PGC 95386, but not actually listed in LEDA at all. Part of a radial-velocity confirmed group with NGC 745, which see for images.

Historical Identification: Per Dreyer, NGC 746 (Swift list II (#15), 1860 RA 01 49 18, NPD 45 45.9) is "very faint, pretty small, a little extended, several stars near".
Physical Information: Apparent size 1.4 by 0.8 arcmin (from images below).

Historical Identification: Per Dreyer, NGC 747 (Leavenworth list II (#321), 1860 RA 01 49 19, NPD 100 08.9) is "extremely faint, pretty small, a little extended 180°".
Physical Information: Apparent size 1.0 by 0.5 arcmin?

Historical Identification: Per Dreyer, NGC 748 (= GC 453 = JH 176 = WH III 193, 1860 RA 01 49 20, NPD 95 09.2) is "pretty faint, 9th magnitude star to northwest".
Physical Information: Apparent size 2.3 by 1.1 arcmin?

Historical Identification: Per Dreyer, NGC 749 (= GC 454 = JH 2448, 1860 RA 01 49 22, NPD 120 36.4) is "pretty bright, small, extended, brighter middle".
Physical Information: Apparent size 2.0 by 1.4 arcmin?