Tau Eridani

Tau Eridani (τ Eri, τ Eridani) is a group of fairly widely scattered stars in the constellation Eridanus.

They form an exception to the general rule that stars that share the same Bayer designation are close together: τ¹ is nearly 20° away from τ⁹ (Pi Orionis is another example of this).

All of them were member of asterism 天苑 (Tiān Yuàn), Celestial Meadows, Hairy Head mansion.

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