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NGC 6845 (also known as Klemola 30) is an interacting system of four galaxies in the constellation Telescopium. The cluster has certain similarities with Stephan's Quintet. Its distance is estimated to be about 90 Mpc.
| NGC 6845 | |
|---|---|
 GALEX photograph of the galaxy cluster: in the center, NGC 6845A; above and to the left of 6845A, NGC 6845B; the components NGC 6845C and NGC 6845D are in this image but cannot be seen clearly. | |
| Observation data (Epoch J2000.0) | |
| Constellation(s) | Telescopium |
| Right ascension | 20h 00m 58.418s[1] |
| Declination | −47° 04′ 13.02″[1] |
| Redshift | 0.021441[1] |
| Distance (co-moving) | 90 Mpc (294 Mly) |
| Other designations | |
| PGC 63985[1] | |
The components of the galaxy cluster are the two spiral galaxies NGC 6845A and NGC 6845B as well as the two lenticular galaxies NGC 6845C and NGC 6845D. The four galaxies occupy an area of about 4' x 2' in the sky. The largest galaxy in this compact galaxy cluster is NGC 6845A, a barred spiral galaxy.[2] SN 2008DA was a Type II supernova observed in NGC 6845A in June 2008.[3] The dwarf galaxy ATCA J2001-4659, which is found around 4.4' northeast of NGC 6845B, was identified as a companion of NGC 6845.[2]
NGC 6845 was discovered on July 7, 1834 by John Herschel.
References
- "NGC 6845". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-25.
- Gordon, Scott; Koribalski, Bärbel; Jones, Keith (2003). "Australia Telescope Compact Array H I observations of the NGC 6845 galaxy group". Monthly Notices of the Royal Astronomical Society. 342 (3): 939–50. arXiv:astro-ph/0303187. Bibcode:2003MNRAS.342..939G. doi:10.1046/j.1365-8711.2003.06606.x.
- Morrell, N. (2008). "Supernova 2008da in NGC 6845A". Central Bureau Electronic Telegrams. 1412: 1. Bibcode:2008CBET.1412....1M.
External links
Media related to NGC 6845 at Wikimedia Commons- Capella Observatory
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На других языках
[de] NGC 6845
NGC 6845 (auch bekannt als Klemola 30) ist ein interagierendes System von vier Galaxien im Sternbild Telescopium. Die Gruppe hat gewisse Ähnlichkeiten mit Stephans Quintett. Ihre Entfernung kann auf rund 283 Millionen Lichtjahre von der Milchstraße abgeschätzt werden.- [en] NGC 6845
[ru] NGC 6845
NGC 6845 (другие обозначения — PGC 63985, NGC 6845A, ESO 284-8, AM 1957-471, IRAS19573-4712) — спиральная галактика с перемычкой (SBb) в созвездии Телескоп.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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