Upsilon Eridani

The Bayer designation Upsilon Eridani (υ Eri / υ Eridani) is shared by four or seven stars, in the constellation Eridanus:

• υ¹ Eridani (50 Eridani)
• υ² Eridani (52 Eridani)
• υ³ Eridani (43 Eridani)
• υ⁴ Eridani (41 Eridani)

Location of υ Eridani stars (circled)

Some sources include the following stars:

• υ⁵ Eridani (f Eridani)
• υ⁶ Eridani (g Eridani)
• υ⁷ Eridani (h Eridani)

This series of stars bore the traditional proper names Theemim (also Theemin) and Beemin (also Beemim).^[1][2] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)^[3] to catalog and standardize proper names for stars. The WGSN approved the names Theemin for υ² Eridani on 1 February 2017 and Beemim for υ³ Eridani on 30 June 2017; both are now included in the List of IAU-approved Star Names.^[4]

References

1. Hough, Carole, ed. (2016), The Oxford Handbook of Names and Naming, Oxford University Press, p. 762, ISBN 978-0191630422.
2. Allen, Richard Hinckley (1963), Star Names, Their Lore and Meaning, Dover Publications Inc, p. 220, ISBN 0486210790
3. "IAU Working Group on Star Names (WGSN)". Retrieved 22 May 2016.
4. "Naming Stars". IAU.org. Retrieved 19 January 2018.