Astronomy:CGCG 396-002
| CGCG 396-002 | |
|---|---|
 CGCG 396-002 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Orion |
| Right ascension | 05h 37m 35.9756s[1] |
| Declination | +01° 20′ 04.154″[1] |
| Redshift | 0.035370±0.000160[1] |
| Helio radial velocity | 10,604±48 km/s[1] |
| Galactocentric velocity | 10604[1] |
| Distance | 512.0 ± 36.0 Mly (156.98 ± 11.03 Mpc) |
| Apparent magnitude (B) | 15.7[1] |
| Characteristics | |
| Size | ~115,900 ly (35.54 kpc) (estimated)[1] |
| Apparent size (V) | 0.8′ × 0.6′[1] |
| Notable features | Merging Galaxy |
| Other designations | |
| Z 396-2, PGC 17532[1][2] | |
CGCG 396-002 is an unusual merging galaxy located in Orion. Its velocity with respect to the cosmic microwave background is 10,644±48 km/s, which corresponds to a Hubble distance of 512.0 ± 36.0 Mly (156.98 ± 11.03 Mpc). The first known reference to this galaxy comes from volume V of the Catalogue of Galaxies and of Clusters of Galaxies, compiled by Fritz Zwicky in 1965.[3]
CGCG 396-002 is a radio galaxy,[citation needed] and is notable for its many arms and unique structure. The central part of the galaxy spans 50,000 light-years apart, but the arms surrounding it span outwards up to 165-170,000 light years.[4]
In 2022 it was rediscovered in the Galaxy Zoo project, in which it was voted as one of the most interesting objects and to be imaged by the Hubble Space Telescope.[5][6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "Results for object NGC 3512". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=CGCG+396-002.
- ↑ "Z 396-2". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Z+396-2.
- ↑ Zwicky, F.; Karpowicz, M.; Kowal, C. T. (1965). "Catalogue of Galaxies and of Clusters of Galaxies", Vol. V. California Institute of Technology. Bibcode: 1965cgcg.book.....Z. https://authors.library.caltech.edu/records/s5sws-vsr10/files/Volume_5.pdf?download=1.
- ↑ Seligman, Courtney. "Principal Galaxy Catalog (PGC) Objects 17500 to 17999". https://cseligman.com/text/atlas/pgc17a.htm.
- ↑ "Hubble Spies a Galactic Gem". NASA/ESA. 4 July 2022. https://esahubble.org/images/potw2227a/.
- ↑ de Lazaro, Enrico (4 July 2022). "Hubble Observes Multi-Armed Galaxy Merger". Sci.News. https://www.sci.news/astronomy/hubble-multi-armed-galaxy-merger-10962.html.
Coordinates: 
05h 37m 35.9756s, +01° 20′ 04.154″
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