Omicron1 Eridani
Omicron1 Eridani (also known as Beid) is a star of visual magnitude 4.04.[1] It lies approximately 125 light-years from Earth in the Eridanus constellation and is a class F (F2) giant with a surface temperature of 7100 K and a luminosity 28 times that of the Sun.[1] In 1971 it was discovered to be a Delta Scuti variable star, with a variation of just a few hundredths of a magnitude with periods of 1.8 and 3.5 days.[1]
Omicron1 has the following equatorial coordinates:[2]
- Right ascension: 4h 11m 51.936s
- Declination: −6° 50′ 15.29″
Its Flamsteed designation is 38 Eridani.
Chinese name
In Chinese, 九州殊口 (Jiǔ Zhōu Shū Kǒu), meaning Interpreters of Nine Dialects, refers to an asterism consisting of ο1 Eridani, 39 Eridani, ξ Eridani, ν Eridani, 56 Eridani and 55 Eri.[3] Consequently, ο1 Eridani itself is known as 九州殊口二 (Jiǔ Zhōu Shū Kǒu èr, English: the Second Star of Interpreters of Nine Dialects.)[4]
References
- ^ a b c [http://www.astro.uiuc.edu/~kaler/sow/beid.html Beid
- ^ Frosty Drew Observatory and Sky Theatre — Beid
- ^ (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.
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