NGC 4103 (also ESO 130-SC5 and OCL 871) is a magnitude +7.4 open star cluster located 5,300 light-years away in the constellation Crux.
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 30th April 1826.
Right Ascension 12h 06m 39.5s, Declination -61° 15' 00"
