Omicron1 Eridani (also known as Beid and 38 Eridani) is a star of visual magnitude 4.04. It lies approximately 125 light-years from Earth in the Eridanus constellation and is a class F (F0III) giant with a surface temperature of 7100 K and a luminosity 28 times that of the Sun. 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.
Its Flamsteed designation is 38 Eridani.
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. 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.)
- Beid Archived August 4, 2007, at the Wayback Machine.
- SIMBAD data for o1 Eri
- 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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