NGC 1870 (also ESO 56-SC81) is a magnitude +11.3 open cluster in the Large Magellanic Cloud located in the constellation Dorado.
The cluster was discovered by Scottish astronomer James Dunlop using a homemade 9-foot 22.86 cm (9 inch) f/12 speculum Newtonian reflector at Paramatta, New South Wales, Australia, on the 3rd August 1826.
Right Ascension 05h 13m 10.0s, Declination -69° 07' 01"
