Kappa Geminorum
From Wikipedia, the free encyclopedia
 |
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (February 2012) |
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Gemini |
| Right ascension | 7h 44m 26.8s |
| Declination | 24° 23' 53" |
| Apparent magnitude (V) | 3.57[1] |
| Distance | 143 ly (43.87 pc) |
| Spectral type | G8 IIIa[1] |
| Other designations | |
Kappa Geminorum (κ Gem, κ Geminorum) is a Class G8, fourth-magnitude star in the constellation Gemini. It is a multiple star system located about 140 light-years from Earth. This star is radiating about 78 times the luminosity of the Sun.[1] Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified.[2]
In Chinese astronomy, Kappa Geminorum is called 積薪, Pinyin: Jīxīn, meaning Pile of Firewood, because this star is marking itself and stand alone in Pile of Firewood asterism, Well mansion (see : Chinese constellation)[3]. 積薪 (Jīxīn) westernized into Tseih Tsing, but the name Tseih Tsing was designated for χ Gem and μ Cnc by R.H. Allen, with the meaning is "piled-up fuel"[4]
[edit] References
- ^ a b c Mallik, Sushma V. (December 1999), "Lithium abundance and mass", Astronomy and Astrophysics 352: 495–507, Bibcode 1999A&A...352..495M
- ^ Garrison, R. F. (December 1993), "Anchor Points for the MK System of Spectral Classification", Bulletin of the American Astronomical Society 25: 1319, Bibcode 1993AAS...183.1710G, http://www.astro.utoronto.ca/~garrison/mkstds.html, retrieved 2012-02-04
- ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 16 日
- ^ Richard Hinckley Allen: Star Names — Their Lore and Meaning: Gemini
[edit] External links
- "HD 62345 -- Star in Double System". SIMBAD Astronomical Database. http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=kappa+geminorum&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2005&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0. Retrieved 2006-12-09.
|
||||||||||||||
