NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC5531
Basic Information
Location and Magnitude
Right Ascension: 14:16:43.2
Declination: +10:53:8
Constellation: BOO
Visual Magnitude: 13.5
Historic Information
Discoverer: d'Arrest
Year of discovery: 1862
Discovery aperture: 11.0
Observational
Summary description: F, S, R, III 47 f 10s
Sub-type: S0
Steve's Notes
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NGC 5531
24" (6/15/15): fairly faint, fairly small, round, 30" diameter. Forms a merged pair with SDSS J141643.57+105252.4 = LEDA 4409321 barely within the halo, just 16" SSE of center. At 375x (6mm ZAO) this small companion appeared as a faint, very small extension at the south-southeast edge of the halo.
17.5" (5/15/99): faint, fairly small, round, 0.8' diameter, low even surface brightness. Located near midpoint of NGC 5531 5.2' SSE and a mag 9.5 star 5' NW. An attached companion on the south side was not noticed.