NGC 7250
Irregular galaxy in the constellation Lacerta
From Wikipedia, the free encyclopedia
NGC 7250 is an irregular galaxy located in the Lacerta constellation. It is a blue-colored galaxy with bright bursts of star formation: its star-forming rate is more than an order of magnitude greater than that of the Milky Way.[5] It was discovered by German-British astronomer William Herschel on 8 November 1790.[6]
Right ascension22h 18m 17.776s[2]
Declination+40° 33′ 44.66″[2]
| NGC 7250 | |
|---|---|
NGC 7250 imaged by the Hubble Space Telescope[1] | |
| Observation data (J2000 epoch) | |
| Constellation | Lacerta[1] |
| Right ascension | 22h 18m 17.776s[2] |
| Declination | +40° 33′ 44.66″[2] |
| Redshift | 0.0039[3] |
| Heliocentric radial velocity | 1,168 km/s[3] |
| Distance | 49.99 ± 14.37 Mly (15.328 ± 4.407 Mpc)[4] |
| Apparent magnitude (V) | 12.58[3] |
| Apparent magnitude (B) | 13.22[3] |
| Characteristics | |
| Type | Irr |
| Mass | 4.7×108[5] M☉ |
| Size | ~42,300 ly (12.97 kpc) (estimated)[4] |
| Apparent size (V) | 1.7′ × 0.8′[4] |
| Other designations | |
| PGC 68535, UGC 11980, MCG+07-45-024, Mrk 907, Z 530-22 | |
The brighter star located in front of the galaxy is named TYC 3203-450-1, and is barely studied. It is about a million times closer to Earth than it the galaxy itself.[7]
