NGC 2438 is a planetary nebula about 3,000 light years away in the constellation Puppis. It was discovered by William Herschel on March 19, 1786. 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.

Apparent magnitude (V): 10.8

Apparent dimensions (V): 1.1 arcmins

Constellation: Puppis

Distance: 2,900 ly ly