NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC7403
Basic Information
Location and Magnitude
Right Ascension: 22:53:6.3
Declination: +1:28:56
Constellation: PSC
Visual Magnitude: 13.9
Historic Information
Discoverer: Coolidge
Year of discovery: 1859
Discovery aperture: 15.0
Observational
Summary description: * slightly nebulous
Sub-type: *
Corwin's Notes
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NGC 7403 is a star, another of those mistaken for a nebula by the Harvard
observers in the late 1850's. The NGC position is more accurate than that
published in AN, and comes from the Harvard Zone catalogue. Dreyer's note in
the first IC indicates some interest in the object, and shows that Coolidge
was the only observer to suspect any nebulosity around the star.
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I've seen the Harvard Zone catalogue in which the star appears, HA 6, 153,
1872. As Dreyer says in the IC1 Note, the star occurs only in Zone 156.
Nevertheless, the position that Coolidge measured is coincident with the
modern position to within about 8 arcseconds. As there are no other stars as
bright within about five arcminutes, the identification is secure.