Herschel Name RA (2000.0) Dec NotesIn addition, there seem to be two or three entries not belonging to any objects, and are not contained in the NGC:
H III.363 IC 4051 13:00.9 -28:00 Galaxy in Coma Berenices H III.382 IC 2995 12:05.8 -27:56 Galaxy in Hydra H III.969 AR 37 11:32.5 +74:32 Open Cluster in Draco H V.35 Sh2 276 05:31 -04.9 Diffuse Nebula in Orion; Barnards Loop ? H III.968? UGC 6090 11:01.7 +75:13 Galaxy in Draco; also assigned non-existing NGC 3500?
Herschel Name RA (2000.0) Dec Notesand perhaps
H I.7 12:42.3 +07:48: Either a comet, or re-observation of M49 H II.118 (GC 3050) 12:31 +14:26 Nonexistent object in Coma near M88
H II.6 (GC 573) 02:38.8 +00:52 Either a comet, or re-observation of NGC 1055 (H I.1)In more detail:
Based on Herschel's notes and drawing, J.L.E. Dreyer, the author of the NGC, concluded that, contrary to Herschel's assumption, H I.7 was possibly a reobservation of M49, because this "nebula" has a star of mag 12 close to it, which might be that visible in the drawing.
J.L.E. Dreyer, in the remarks to NGC 4501=M88, remarks that "[H] II.118, "just following M 88," has been left out, as nobody after H [William Herschel] has seen any neb[ula] f[ollowing] M 88."
"II.6. This has probably been a telescopic comet, as I have not been able to find it again, notwithstanding the assistance of a drawing which represents the telescopic stars in its neighborhood."Nevertheless, John Herschel included this object, or observation, in his General Catalogue, gives a position of RA=02:31:35.5, NPD=89:44:06.9 (1860.0) and repeats his father's description "small, cometic". In his notes to the GC, he expresses his belief that this object was actually another comet: "This was probably really a comet, as indicated by its description, having been subsequently looked for and not found."
"II.6 is on p. 17 of G.C. supposed to have been a comet, but further on (p. 45) it is stated ("from MS. notes") that it is = I.1. The place of II.6 was very rough."Herschel's GC coordinates (RA=02:31:35.5, Dec=+00:15:53.1 (1860.0)) precessed to 2000, are RA=02:38:46.7, Dec=+00:52:20.7 (2000.0).
Please submit any additional information on any of these entries in Herschel's catalogs, or other Herschel objects which were perhaps not included in the NGC.
Last Modification: August 14, 2007