NGC/IC Project Restoration Effort

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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

===== 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. ----- 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.