NGC 3242, commonly known as the Ghost of Jupiter, is a planetary nebula located in the constellation Hydra. William Herschel discovered the nebula on February 7, 1785, and cataloged it as H IV.27.

Constellation: Hydra

Apparent dimensions (V): 25″

Apparent magnitude (V): 8.6

Declination: −18° 38′ 32.6″

Right ascension: 10^h 24^m 46.1^s

Distance: 1400 ly