NGC 4615
Galaxy in the constellation Coma Berenices
From Wikipedia, the free encyclopedia
NGC 4615 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 5,022±20 km/s, which corresponds to a Hubble distance of 241.6 ± 16.9 Mly (74.07 ± 5.19 Mpc).[1] However, one non-redshift measurement gives a much closer distance of 213 Mly (65.4 Mpc).[2] It was discovered by German astronomer Heinrich d'Arrest on 9 May 1864.[3]
| NGC 4615 | |
|---|---|
 NGC 4615 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 41m 37.3313s[1] |
| Declination | +26° 04′ 21.871″[1] |
| Redshift | 0.015797±0.0000112[1] |
| Heliocentric radial velocity | 4,736±3 km/s[1] |
| Distance | 213 Mly (65.4 Mpc)[1] |
| Group or cluster | Holm 439 |
| Apparent magnitude (V) | 13.84[1] |
| Characteristics | |
| Type | Scd[1] |
| Size | ~160,400 ly (49.17 kpc) (estimated)[1] |
| Apparent size (V) | 1.6′ × 0.7′[1] |
| Other designations | |
| HOLM 439A, IRAS 12391+2620, 2MASX J12413730+2604223, Arp 34, UGC 7852, MCG +04-30-013, PGC 42584, CGCG 129-018[1] | |
NGC 4615 is listed in Halton Arp's Atlas of Peculiar Galaxies as Arp 34, as an example of a galaxy that looks like a stretched-out S shape.[4]
NGC 4615 and NGC 4614 are listed together as Holm 439 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[5] This grouping was also listed by A. P. Mahtessian in a paper published in 1998.[6]
