NGC/IC Project Restoration Effort

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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

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