NGC 930 (02h 27.9m +20° 21') N932 was discovered by William Herschel (II 489) and is the brightest member of a small group of galaxies. On 26 October 1872, Ralph Copeland using Lord Rosse's telescope noted a second object which is placed at 60" separation in PA 314.3 deg (NW). This object was not mentined in the subsequent three observations of N930 but Dreyer included it as N930 when he compiled the NGC. I carefully examined the POSS print containing this field and did not find any object at Rosse's position although there is a small red condensation with dimensions 0.15'x 0.15' at the NE edge of the galaxy. The RNGC mixes up the identifications and lists the main galaxy as N930 and calls N932 non-existent.Since Herschel was definitely the first to observe this galaxy, his number N932 should apply and the data listed in the RNGC under N930 should be transferred to N932. It is possible that Rosse's nova N930 refers to the red condensation mentioned above, altlhough it is extremely faint and the position angle is incorrect. The gx is identified as N930 = N932 in the UGC and CGCG. Reinmuth identifies a faint knot at the NE edge as N930; "eF, vS, R, vgvvlbM; 0.6' nf att NGC 932." Listed in RNGC Corrections #4. NGC 1109 (02h 47.7m +13° 15') Discovered by Marth in a group of galaxies with several problem identifications (bad positions or faint stars?). RNGC and RC3 identify N1109 as U02293 = M+02-08-011. This galaxy was later correctly placed by Javelle as IC 1852 and CGCG, UGC and MCG use the IC designation. Marth's position for N1109 is 39s E and 2' N of this galaxy. Harold Corwin suggests that N1109 may instead refer to U02265 = M+02-08-006 = CGCG 440-008, which is located exactly 2.0 tmin W of Marth's position but and exact match in RA. GSC position 02 49 00.4 +13 13 25. Due to the large difference in RA this ID is not certain. See N1111, 1112, 1113, and 1117. NGC 1111 (02h 48.7m +13° 16') Discovered by Marth in a group of galaxies which have several identification problems including N1109, N1112, N1113 and N1117. Harold Corwin suggests that N1111 = IC 1850 (correct position from Javelle), located at 02 48 39 +13 15 34 (2000). If this uncertain ID is correct, then Marth's RA is 1.0 tmin off (too far E), although the gx is a fairly good match in dec. The galaxy identified as N1111 in RNGC is located 7' S and 9' E of U02293 = N1112 (identification suggested by HC). See RNGC Corrections #2 and notes for N1109. NGC 1112 (02h 49.0m +13° 13') Discovered by Marth in a group including N1109, N1111, N1113, N1115, N1116 and N1117 and N1127. Several of these galaxies are nonexistent or have poor positions including N1109, N1111, N1112, N1113 and N1117 and this number is listed as nonexistent in RNGC. Harold Corwin suggests that N1112 may refer to U02293 = M+02-08-011 = CGCG 440-015 = IC 1852 (correct position by Javelle) with a 1 tmin error by Marth in RA (too far E) but a good match in dec. This gx is identified as IC 1852 in CGCG (440-015), UGC (U02293) and MCG (M+02-08-011) and listed as N1109 in RNGC and RC3. GSC position 02 49 00.4 +13 13 25. NGC 1113 (02h 50.1m +13° 20') Discovered by Marth in a group with several problematic objects which may be nonexistent (probably stars) or bad positions including N1109, N1111, N1112, N1113 and N1117. N1113 is listed as nonexistent in RNGC. Harold Corwin suggests that Marth's position may refer to the mag 10 star it matches and the N1113 a mag 15 star about 2' NNW at 02 50 05.0 +13 19 39 (2000). NGC 1117 (02h 51.3m +13° 11') Marth placed N1117 at 02 50 43 +13 10 (2000). RNGC identifies N1117 as the double gx (U02337s = M+02-08-019/020 = CGCG 440-022s). This gx is located at a mean GSC position of 02 51 13.0 +13 11 20 (2000) and is not identified as N1117 in CGCG or MCG nor listed in NGCPOS or RC3. This gx was also discovered on the same night as N1109, N1111, N1112 and N1113 which all have very uncertain identifications (as well as N1115, N1116). In this case, the error would be 30s in RA. Discussed in RNGC Corrections #2. |
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