| DDO 169 | |
| Epoch: | J2000 |
| Constellation Name: | Canes Venatici |
| Z: | +260 km/s |
| Dist Ly: | 6.03 / 8.23 Mpc[1] [2] (19.7 / 26.8 million ly) |
| Type: | IAm |
| Appmag V: | 14.61 |
| Size V: | 2.7′ × 0.9' |
| Names: | UGC 8331, PGC 46127 |
DDO 169 (also known as UGC 8331) is an irregular galaxy located in the constellation Canes Venatici. It is a member of the M51 Group of galaxies and measures approximately 5 × 1.5 kiloparsecs (16,000 × 5,000 lightyears). The galaxy's large-scale structure is very unorganized and it has two clusters of stars in its outer portions in addition to the cluster in the center.[3] These clusters make it practically impossible to determine the galaxy's rotation curve and contributes to a large variation in distance figures that are derived with different methods. The exact distance to the galaxy is not known, although a 1998 paper estimated the distance as 8.23 megaparsecs.