630 Euphemia is a mid-sized Eunomian asteroid.
Photometric observations at the Palmer Divide Observatory during 2005 showed a best fit rotation period of 79.18 ± 0.02 hours with a brightness variation of 0.2 ± 0.02 in magnitude. However, some uncertainty remains concerning the reliability of this result.
References
External links , Palmer Divide Observatory, B. D. Warner (2005) Asteroid Lightcurve Database (LCDB), query form (info ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center