NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC7447
Basic Information
Location and Magnitude
Right Ascension: 23:0:26.0
Declination: -10:31:39
Constellation: AQR
Visual Magnitude:
Historic Information
Discoverer: Cooper
Year of discovery: 1855
Discovery aperture: 13.5
Observational
Summary description: * 11ยท12 in neb (Auw 49)
Sub-type: NF
Corwin's Notes
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NGC 7447 apparently does not exist. It is a star of 11.5 magnitude flagged as
"nebulous" in the Markree Catalogue on 8 October 1855, but has not been seen
again. Auwers, Tempel, and Burnham all failed to find it. Dreyer says that
Burnham also noted a "F triple star a little np the place", but I do not see
anything within about 10 arcmin that could be called a triple star.
The nearest star to its position is about an arcminute to the northeast. The
position difference is significantly larger than Cooper's estimated errors of
about 5 arcseconds in both coordinates. So, this is not likely to be the
intended star even though the magnitude is approximately right.
So, aside from the possibility of a faint comet, this object remains a
mystery.
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A search for a comet using JPL's "Small Body Identification" web page, within
about 5 degrees of the position of Cooper's "nebulous" star turned up nothing.
This object still remains a mystery.