NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC7613
Basic Information
Location and Magnitude
Right Ascension: 23:19:51.0
Declination: +0:11:54
Constellation: PSC
Visual Magnitude:
Historic Information
Discoverer: Ferrari
Year of discovery: 1865
Discovery aperture: 9.5
Observational
Summary description: vF
Sub-type: NF
Corwin's Notes
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NGC 7613 and NGC 7614 are two of Brother Ferrari's nebulae announced by Father
Secchi in AN 1571. N7614 is "Very near with the 3rd object [N7613] south-
preceding" according to the note that Secchi gives, but there is no obvious
double nebula anywhere near the nominal position. There are many galaxies in
this area, however. Perhaps one of them, plus a faint star or asterism, will
turn out to be the objects the good brother saw.
See NGC 7667 for more about these observations.
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The faint galaxy (V = 16.5) with an eccentric nucleus at 23 19 51.7, +00 25 21
has sometimes been taken as NGC 7613. While Brother Ferrari called his object
"vF", I do not think that it would have been visible in the 9.5-inch Merz
refractor at the Roman College. JH, for example, called NGC 7615 "eF, eS"
with his 18.7-inch reflector on a night with the "sky clear" and measured a
good position for it. Nevertheless, d'A, Schultz, and Tempel failed to find
JH's nebula which is nearly 2 magnitudes brighter (V = 14.8) than this galaxy
supposed to have been seen by Brother Ferrari. See NGC 7667 for more on the
Vatican observations.
Still, to be inclusive, I've listed it in the position table -- with a couple
of question marks appended, of course.