Tau Eridani

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

Location of τ Eridani stars (circled)

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).

• τ¹ Eridani (1 Eridani)[1]
• τ² Eridani (2 Eridani)[2]
• τ³ Eridani (11 Eridani)[3]
• τ⁴ Eridani (16 Eridani)[4]
• τ⁵ Eridani (19 Eridani)[5]
• τ⁶ Eridani (27 Eridani)[6]
• τ⁷ Eridani (28 Eridani)[7]
• τ⁸ Eridani (33 Eridani)[8]
• τ⁹ Eridani (36 Eridani)[9]

All of them were member of asterism 天苑 (Tiān Yuàn), Celestial Meadows, Hairy Head mansion.[10]