Gamma Eridani
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 03h 58m 01.76695s [1] |
| Declination | −13° 30′ 30.6698″ |
| Apparent magnitude (V) | 2.95 [1] |
| Spectral type | M1IIIb [1] |
| Other designations | |
Gamma Eridani (γ Eri, γ Eridani) is a star in the constellation Eridanus. It has the traditional name Zaurak, which means "the boat."[2]
In Chinese, 天苑 (Tiān Yuàn), meaning Celestial Meadows, refers to an asterism consisting of γ Eridani, δ Eridani, π Eridani, ε Eridani, ζ Eridani, η Eridani, π Ceti, τ1 Eridani, τ2 Eridani, τ3 Eridani, τ4 Eridani, τ5 Eridani, τ6 Eridani, τ7 Eridani, τ8 Eridani and τ9 Eridani.[3] Consequently, γ Eridani itself is known as 天苑一 (Tiān Yuàn yī, English: the First Star of Celestial Meadows.)[4]
Structure
Zaurak has an apparent magnitude of +2.95 and is of spectral type M0.5IIICa-ICr -. As determined by the Hipparcos astrometry satellite,[5][6] it lies at a distance of about 150 light years from Earth.
- Coordinates (equinox 2000):
- Right ascension: 3h 58m 1.76695s
- Declination: −13° 30′ 30.6698″
Namesakes
USS Zaurak (AK-117) was a United States Navy Crater class cargo ship named after the star.
References
- 1 2 3 4 SIMBAD, Gamma Eridani (accessed 2015-04-27)
- ↑ Star Name - R.H. Allen p. 218
- ↑ (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) 香港太空館 - 研究資源 - 亮星中英對照表, Hong Kong Space Museum. Accessed on line November 23, 2010.
- ↑ Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; et al. (July 1997), "The Hipparcos Catalogue", Astronomy and Astrophysics 323: L49–L52, Bibcode:1997A&A...323L..49P
- ↑ Perryman, Michael (2010), The Making of History's Greatest Star Map, Heidelberg: Springer-Verlag, doi:10.1007/978-3-642-11602-5
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