HCG 1 is a Hickson Compact Group of galaxies identified on Palomar Observatory Sky Survey red prints by Paul Hickson in 1982.[1] It is composed of four interacting member galaxies, two of which are peculiar.[2]
| HCG 1 | |
|---|---|
 Hickson Compact Group no.1 with Legacy Surveys DR10 | |
| Observation data (J2000 epoch) | |
| Constellation | Andromeda |
| Right ascension | 00h 23m 01.365s |
| Declination | +25° 26′ 47.793″ |
| Redshift | 0.03397 |
| Distance | 460 M light-years |
| Characteristics | |
| Size | 2'.9 x 2'.9 |
Members
edit| HGC | Name | Type | Mag. | Position J2000.0 | Estimated Distance |
|---|---|---|---|---|---|
| 1a | PGC 1627 | Sbc? peculiar | 15.0 | RA 00 26 07.1, Dec +25 43 31 | 460 Mly |
| 1b | PGC 1625 | S0/a? peculiar | 15.5 | RA 00 26 06.0, Dec +25 43 09 | 460 Mly |
| 1c | PGC 1614 | E1 | 15.9 | RA 00 25 54.4, Dec +25 43 25 | 450 Mly |
| 1d | PGC 1618 | S0 | 17.4 | RA 00 25 58.8, Dec +25 43 31 | 455 Mly |
References
edit- ↑ Hickson, P. (1982). "Systematic properties of compact groups of galaxies". The Astrophysical Journal. 255: 382. doi:10.1086/159838. ISSN 0004-637X.
- 1 2 "Hickson's Compact Groups (HCG) of Galaxies". cseligman.com. Retrieved 2026-04-26.
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