NGC/IC Project Restoration Effort

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NGC7173

 

Basic Information


Location and Magnitude


Right Ascension: 22:2:3.1
Declination: -31:58:23
Constellation: PSA
Visual Magnitude: 12.0

Historic Information


Discoverer: Herschel J.
Year of discovery: 1834
Discovery aperture: 18.3

Observational


Summary description: cB, cS, R, sbM *, 2nd of 4
Sub-type: E3

Steve's Notes

===== NGC 7173 24" (8/23/14): bright, moderately large, round, 45" diameter. Contains a relatively large, very bright core that gradually increases to the center. NGC 7174/7176 (contact pair) is less than 1.5' southeast. NGC 7172 lies 6' north. The quartet forms HCG 90 and the close triplet is KTS 66. 18" (10/21/06): fairly bright, fairly small, round, well concentrated with a very bright 30" core that increases to the center. The core is surrounded by a much fainter halo perhaps 45" diameter. In a trio with the contact pair NGC 7174/7176 1.4' SE. 18" (9/3/05): moderately bright, fairly small, round, evenly concentrated to a brighter core and quasi-stellar nucleus. Located 1.5' NW of the NGC 7176/7174 pair in HCG 90 and just slightly fainter and smaller than NGC 7174. 13.1" (7/27/84): faint, small, round. Similar in size and brightness to NGC 7176 1.5' SE in a compact trio with NGC 7174 1.3' SE. Member of the HCG 90 = NGC 7173 group = Klemola 34. 8" (7/24/82): faint, small.