NGC 772

Alt. Designations: ARP 78
Object Type: spiral galaxy
Constellation: Aires
Distance: 130 mly
Right Ascension: 01h 59m 19.5s
Declination: +19° 00´ 27"
Visual Magnitude: 10.3
Apparent Dimension: 7.2´ X 4.3´
Best Month To View: Nov

NGC 772 (also known as Arp 78) is an unbarred spiral galaxy approximately 130 million light-years away in the constellation Aries. It is notable for possessing a single elongated outer spiral arm, which has likely arisen due to tidal interactions with nearby galaxies. At around 100,000 light years in diameter, NGC 772 rivals the Milky Way Galaxy in size and is surrounded by several satellite galaxies including the dwarf elliptical, NGC 770.