NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC1240
Basic Information
Location and Magnitude
Right Ascension: 3:13:26.6
Declination: +30:30:27
Constellation: ARI
Visual Magnitude:
Historic Information
Discoverer: Herschel W.
Year of discovery: 1784
Discovery aperture: 18.7
Observational
Summary description: eF, vS, ? vS st
Sub-type: *2
Corwin's Notes
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NGC 1240 is probably the double star 34 sec east and 3.7 arcmin south of WH's
position. His description, from one observation on 12 Sept 1784 ("Suspected,
240 left a doubt; eF and vS, most probably 2 close stars; between 2 stars,"
quoted by Dreyer in the 1912 Papers collection) fits perfectly, and there is
nothing else in the area that matches. The position difference is not
unexpectedly large for WH's early observations.