NGC 1570
Galaxy in the constellation of Caelum
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NGC 1570, mistakenly called NGC 1571, is a faint galaxy located in the southern constellation Caelum, the chisel. It has a blue magnitude of 13.2,[4] making it visible through a medium sized telescope. Based on a redshift of z = 0.014760,[2] the object is estimated to be 198 million light years (60.9 megaparsecs) away from the Local Group.[3] It appears to be receding with a heliocentric radial velocity of 4,392 km/s.[2]
| NGC 1570 | |
|---|---|
A legacy surveys image of NGC 1570. | |
| Observation data (J2000.0 epoch) | |
| Constellation | Caelum |
| Right ascension | 04h 22m 08.93282s[1] |
| Declination | −43° 37′ 46.4517″[1] |
| Redshift | 0.014760[2] |
| Heliocentric radial velocity | 4,392±84 km/s[2] |
| Distance | 199 Mly (60.9 Mpc)[3] |
| Group or cluster | LDC 302[3] |
| Apparent magnitude (B) | 13.22[4] |
| Characteristics | |
| Type | S0[5] |
| Mass | 297±149 (black hole)[6] M☉ |
| Size | 108,000 ly (33,113 pc)[7] |
| Apparent size (V) | 1.037′ × 0.809′[8] |
| Other designations | |
| NGC 1571, LEDA 14971, PGC 14971 | |
NGC 1570 has a galaxy morphological classification of S0,[5] indicating that it is a lenticular galaxy. It has also been catalogued as a peculiar elliptical galaxy. The central black hole has a mass 297 times that of the Sun.[9] It is estimated to be 8.9 billion years old, younger than the Milky Way. The average iron abundance of the galaxy is 135% that of the Sun's. NGC 1570 is said to be round in shape, making it more likely to be an elliptical galaxy.[10]
The galaxy was first discovered by Sir John Herschel in November 1835. A month later, he observed NGC 1570 again and mistakenly called it NGC 1571 due to imprecise coordinates. NGC 1570 is part of a small galaxy group called LDC 302.[3] It is the brightest member.