s

Arp 27

Ursa Major
Category: One heavy arm

Also NGC 3631. A face on galaxy with distinct arms. These arms show numerous knots and divide into subarms. Classified by Arp to have one heavy arm. The southern arm is the heaviest. Note however the north-eastern arm, which  has a very straight appearance, without curvature.

Mag 11.0
Type Sc

Redshift is 0.00386 (1156km/s)

Photo: 2001-11-13, 12" f/10, 640 sec

Arp list