NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC7531
Basic Information
Location and Magnitude
Right Ascension: 23:14:48.4
Declination: -43:35:56
Constellation: GRU
Visual Magnitude: 11.3
Historic Information
Discoverer: Herschel J.
Year of discovery: 1836
Discovery aperture: 18.3
Observational
Summary description: pB, S, lE, pgbM
Sub-type: Sbc
Corwin's Notes
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NGC 7531. This beautiful, large, southern spiral has a companion -- perhaps
optical -- about 2.9 arcminutes west. The second galaxy has a very low
surface brightness, but is nevertheless fully two-thirds the size of NGC 7531
itself at the 26.5 B mag/arcsec^2^. Note that the redshift given in the
HIPASS list (see A&A 377, 801, 2001) applies to NGC 7531. The HIPASS "pixels"
are approximately 10 arcminutes on a side, and the two galaxies are contained
in the same pixel. Ron Buta has a little more on this strange galaxy in "The
de Vaucouleurs Atlas of Galaxies" (Cambridge, 2007) on pages 54-56.
Steve's Notes
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NGC 7531
13.1" (9/3/86): moderately bright, fairly small, oval ~N-S, brighter core. Located 7.0' due west of mag 8 SAO 231518. Appears bright for such a low elevation galaxy from Northern California.