Astronomy:NGC 941
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| NGC 941 | |
|---|---|
| File:250px NGC 941 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 02h 28m 27.847s[1] |
| Declination | −01° 09′ 05.61″[1] |
| Redshift | 0.005398[2] |
| Helio radial velocity | 1613.8 km/s[2] |
| Distance | 54.9 Mly (16.83 Mpc)[3] |
| Apparent magnitude (V) | 12.20[4] |
| Apparent magnitude (B) | 12.8[2] |
| Absolute magnitude (V) | −19.1[4] |
| Characteristics | |
| Type | SAB(rs)c[4] |
| Other designations | |
| UGC 1954, MCG+00-07-022, PGC 9414[2] | |
NGC 941 is an intermediate spiral galaxy in the constellation Cetus. It is an estimated 16.83 MPc (55 million light-years)[3] from the Milky Way and has a diameter of approximately 55,000 light years. The galaxies NGC 926, NGC 934, NGC 936, NGC 955 are located in the same sky area. NGC 941 was discovered by German-British astronomer William Herschel on 6 January 1785.[5][6]
The morphological classification of NGC 941 is SAB(rs)c,[4] indicating a spiral galaxy with a weak bar structure (SAB), an incomplete inner ring (RS), and moderately wound spiral arms (c).
Supernova
One supernova has been observed in NGC 941.
- SN 2005ad (Type II, mag. 17.4) was discovered by Kōichi Itagaki on 6 February 2005.[7][8][9]
References
- ↑ 1.0 1.1 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S.
- ↑ 2.0 2.1 2.2 2.3 "NGC 941". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+941.
- ↑ 3.0 3.1 Tully, R. Brent; Courtois, Hélène M.; Sorce, Jenny G. (2016). "Cosmicflows-3". The Astronomical Journal 152 (2): 21. doi:10.3847/0004-6256/152/2/50. 50. Bibcode: 2016AJ....152...50T.
- ↑ 4.0 4.1 4.2 4.3 "Results for object NGC 0941 (NGC 941)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=NGC%20941&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1.
- ↑ Ford, Dominic. "The galaxy NGC 941 - In-The-Sky.org" (in en). https://in-the-sky.org/data/object.php?id=NGC941.
- ↑ "Revised NGC Data for NGC 941". http://spider.seds.org/ngc/revngcic.cgi?NGC941.
- ↑ "SN 2005ad". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=SN+2005ad.
- ↑ "SN 2005ad". IAU. https://www.wis-tns.org/object/2005ad.
- ↑ Nakano, S.; Itagaki, K. (2005). "Supernovae 2005ab and 2005ad". International Astronomical Union Circular (8479): 1. Bibcode: 2005IAUC.8479....1N. http://www.cbat.eps.harvard.edu/iauc/08400/08479.html#Item1.
External links
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