NGC/IC Project Restoration Effort
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NGC4894
Basic Information
Location and Magnitude
Right Ascension: 13:0:16.7
Declination: +27:58:1
Constellation: COM
Visual Magnitude: 15.2
Historic Information
Discoverer: Herschel J.
Year of discovery: 1827
Discovery aperture: 18.3
Observational
Summary description: pF, S, R
Sub-type: S0
Corwin's Notes
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NGC 4894 = NGC 4898. JH almost certainly saw the considerably brighter N4898
rather than its fainter companion 0.7 arcmin to the northwest. Dreyer himself
in a note in the Scientific Papers pulls WH's designation (III 363) off the
number NGC 4894 and puts it on IC 4051; that, however, is probably wrong.
WH's position (13 00 58, +28 00.2; J2000) is closer to the brighter NGC 4908,
so that is almost certainly III 363. See NGC 4908, NGC 4864, and IC 4051 for
more on the Coma Cluster field.
d'A comments on a companion galaxy (or on one night perhaps "galaxies"; I
haven't yet been able to accurately translate his Latin) in his descriptions
of NGC 4898. But one of these is certainly NGC 4889 ("1 [arcmin] north, 10s
preceding"), so it is unlikely that he actually saw CGCG 160-247, the fainter
object usually taken for NGC 4894. Bigourdan's observations under the number
"NGC 4894" actually point directly at NGC 4898, which is, of course,
considerably brighter.
Wolfgang, in an email from September 2014, seems to favor simply noting NGC
4894 as non-existent. That is certainly an option, but -- while the situation
is not absolutely clear -- I'm nevertheless going to assign the number NGC
4894 to NGC 4898, based on JH's observation. This has the advantage of giving
the number a referent which it would otherwise not have, and removes the
temptation to assign it to CGCG 160-247.
Steve's Notes
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NGC 4894
See observing notes for NGC 4898.