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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]
NGC 7250 | |
---|---|
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☉ |
Other designations | |
PGC 68535, UGC 11980, MCG+07-45-024, Mrk 907, Z 530-22 |
In 2013, a type Ia supernova was detected within the galaxy, and was designated SN 2013dy. It was detected about 2.4 hours after the explosion, making it the earliest-known detection of a supernova at the time.[6]
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]
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