51 Andromedae
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 37m 59.56s[1] |
| Declination | +48° 37′ 41.6″[1] |
| Apparent magnitude (V) | 3.57 |
| Characteristics | |
| Spectral type | K3III |
| U−B color index | 1.45 |
| B−V color index | 1.28 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | 16.1 km/s |
| Proper motion (μ) | RA: 61.95 ± 0.17[1] mas/yr Dec.: -112.15 ± 0.17[1] mas/yr |
| Parallax (π) | 18.41 ± 0.18[1] mas |
| Distance | 177 ± 2 ly (54.3 ± 0.5 pc) |
| Absolute magnitude (MV) | 5.833 |
| Details | |
| Mass | 2.3[2] M☉ |
| Radius | 21.5 ± 0.9[3] R☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
51 Andromedae (abbreviated 51 And) is the 5th brighest (4th magnitude) star in the constellation Andromeda. 51 Andromedae is the Flamsteed designation. It is occasionally called by the proper name Nembus[4][5] in Bayer's Uranometria (1603)[6] and Bode's star atlas Uranographia (1801).[7]
Ptolemy included this star in Andromeda in the Almagest, but it was moved into Perseus by Johann Bayer, who designated it Upsilon Persei (υ Per). Flamsteed moved it back, and the International Astronomical Union made Flamsteed's 51 Andromedae its official designation in 1930.[8][9][10]
In Chinese, 天大將軍 (Tiān Dà Jiāng Jūn), meaning Heaven's Great General, refers to an asterism consisting of 51 Andromedae, γ Andromedae, φ Persei, 49 Andromedae, χ Andromedae, υ Andromedae, τ Andromedae, 56 Andromedae, β Trianguli, γ Trianguli and δ Trianguli.[11] Consequently, 51 Andromedae itself is known as 天大將軍三 (Tiān Dà Jiāng Jūn sān, English: the Third Star of Heaven's Great General.)[12]
51 Andromedae is an orange K-type giant with an apparent magnitude of +3.59. It is approximately 177 light years from the Earth.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found., p.334.
- ↑ p. 5, Astronomers' Stars, Patrick Moore, London, Routledge, 1987.
- ↑ Scans of the plates of Uranometria by J. Bayer, 1603 @Linda Hall Library
- ↑ Scan of the plates of Uranographia by J.E. Bode, 1801 @Ian Ridpath's Star Tales
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found., p.34.
- ↑ Wagman, Morton (2003) Lost Stars p.240, McDonald and Woodward, Blacksburg, Virginia. ISBN 0-939923-78-5.
- ↑ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
- ↑ (Chinese) http://zh.wikipedia.org/zh-tw/%E5%A4%A9%E5%A4%A7%E5%B0%86%E5%86%9B%E4%B8%89
External links
- Lua error in package.lua at line 80: module 'strict' not found.
- wikisky.org
- http://www.alcyone-software.com/cgi-bin/search.pl?object=HR0464
- Image 51 Andromedae
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