NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC4028
Basic Information
Location and Magnitude
Right Ascension: 11:58:35.8
Declination: +16:10:38
Constellation: COM
Visual Magnitude: 12.3
Historic Information
Discoverer: Herschel W.
Year of discovery: 1783
Discovery aperture: 18.7
Observational
Summary description: vF, vS, vlE, r
Sub-type: S0-a
Corwin's Notes
=====
NGC 4028 = NGC 4014, in spite of what JH had to say in a note in GC (repeated
by Dreyer in the NGC Notes). This is one of WH's early discoveries (30 Dec
1783). As with other objects found during the fall and winter of 1783-1784,
the position is not very good. However, WH's full record can be found in the
Herschel Archives (CH's fair copy) and was also published by Dreyer in the
1912 Scientific Papers. There, we find the note, "... It forms an isosceles
triangle with two small stars {Dreyer's note:} [by a diagram, these are about
6 arcmin sp.]. ..." The stars precede N4014 by the correct amount, so I am
pretty sure that it is WH's nebula.
This requires WH to have made two 2 min errors in his RA offsets from two
different stars on two different nights. While it is highly unlikely that he
would make two such errors leading to much the same position -- this is what
prompted JH's comment -- this is apparently exactly what happened. The
configuration on the sky is too outstanding to be mistaken.
Steve's Notes
=====
NGC 4028
See observing notes for NGC 4014.