Messier 109
Messier 109 (also known as NGC 3992) is a barred spiral galaxy exhibiting a weak inner ring structure around the central bar approximately 67.2 ± 23 million light-years away in the northern constellation Ursa Major. M109 can be seen south-east of the star Phecda (γ UMa, Gamma Ursa Majoris).
| Messier 109 | |
|---|---|
Barred spiral galaxy Messier 109 | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 57m 36.0s |
| Declination | +53° 22′ 28″ |
| Redshift | 0.003496±0.000004 |
| Heliocentric radial velocity | 1048±1 km/s |
| Galactocentric velocity | 1121±3 km/s |
| Distance | 67.2 ± 23.2 Mly (20.6 ± 7.1 Mpc) |
| Apparent magnitude (V) | 9.8 |
| Characteristics | |
| Type | SB(rs)bc, LINER/HII |
| Apparent size (V) | 7.6 × 4.7 moa |
| Other designations | |
| IRAS 11549+5339, NGC 3992, UGC 6937, MCG +09-20-044, PGC 37617 | |
References: SIMBAD: Search M109 | |
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