NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC4240

Basic Information

Location and Magnitude

Right Ascension: 12:17:24.3
Declination: -9:57:6
Constellation: VIR
Visual Magnitude: 12.3

Historic Information

Discoverer: Tempel
Year of discovery: 1875
Discovery aperture: 11.0

Observational

Summary description: pB, S, * 12 sp ½'
Sub-type: E1

Corwin's Notes

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NGC 4240 = NGC 4243, which see.

Steve's Notes

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NGC 4240

18" (5/28/06): fairly faint, small, round, 25" diameter.  Contains a very small bright core ~10" diameter which increases to a bright substellar nucleus. Located just east of a mag 13 star (24" from the center).

18" (3/13/04): faint, small, round, 30" diameter, strongly concentrated with a very small bright core and stellar nucleus.  A mag 13 star is barely off the west edge.  Observation made through thin clouds.