Upsilon Geminorum

Based upon an annual parallax shift of 12.88 mas,[1] it is around 253 light years from the Sun.

There is a visual companion: a magnitude 13.20 star located at an angular separation of 55.20″ along a position angle of 40°, as of 2008.

[10] This is an evolved red giant star with a stellar classification of M0 III.

Upsilon Geminorum is radiating 370 times the solar luminosity from its outer atmosphere at an effective temperature of 4,019 K.[8] Based upon the motion of this star through space, Upsilon Geminorum is a member of the Wolf 630 moving group.

This is a set of stars centered on Wolf 630 that are moving nearly in parallel and have an age of around 2.7±0.5 billion years.