NGC 109 (also MCG 4-2-20, UGC 251 and PGC 1633) is a magnitude +14.1 barred spiral galaxy located 250 ±18 million light-years away in the constellation Andromeda.
The galaxy was discovered by German-Danish astronomer Heinrich Louis d'Arrest using a 27.94 cm (11 inch) f/17.5 refractor at the Copenhagen Observatory on the 8th October 1861.
Right ascension 00h 26m 14.73s, Declination +21° 48' 25.1"
