* Astronomy

NGC 2438 (PK 231+4.2) is a magnitude +10.8 planetary nebula located about 2,900 light-years away in the constellation Puppis.

The planetary nebula was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Clayhall Farm House in Old Windsor, on March 19, 1786.

Right ascension 07h 41.8m Declination -14° 44'

The planetary nebula NGC 2438 appears to lie within the cluster M46, but it is most likely unrelated since it does not share the cluster's radial velocity.
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