Tau2 Eridani

Tau² Eridani (τ² Eri, τ² Eridani, Tau² Eri, 2 Eridani, 2 Eri)^[1] is a star in the constellation Eridanus. It is one of a series of stars that share the Bayer designation Tau Eridani. It has the traditional name Angetenar (Arabic "bend of the river").

In Chinese, 天苑 (Tiān Yuàn), meaning Celestial Meadows, refers to an asterism consisting of τ² Eridani, γ Eridani, π Eridani, δ Eridani, ε Eridani, ζ Eridani, η Eridani, π Ceti, τ¹ Eridani, τ³ Eridani, τ⁴ Eridani, τ⁵ Eridani, τ⁶ Eridani, τ⁷ Eridani, τ⁸ Eridani and τ⁹ Eridani.^[2] Consequently, τ² Eridani itself is known as 天苑九 (Tiān Yuàn jiǔ, English: the Ninth Star of Celestial Meadows.)^[3]

Structure

Tau2 Eridani belongs to spectral class K0III and has apparent magnitude +4.75. It is approximately 182 light years from Earth.

Coordinates (J2000):

• Right ascension: 2^h 51^m 02.30^s
• Declination: −21° 00′ 15.0″

References

1. "* tau02 Eri -- Star". SIMBAD. Retrieved 2015-01-15.
2. (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.
3. (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.