NGC 6440
NGC 6440
NGC 6440 is a globular cluster in the constellation Sagittarius and was discovered by William Herschel on 28 May 1786. It has apparent magnitude 10, with diameter 1 arc minute, and is class V.
References
- Robert Burnham, Jr, Burnham's Celestial Handbook: An observer's guide to the universe beyond the solar system, vol 3, p.1555
External links
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