618 Elfriede is a minor planet orbiting the Sun. On July 24, 2013, it occulted the magnitude 12.8 star 2UCAC 23949304, over parts of Mexico and southwestern United States.
Photometric observations of this asteroid collected during 2008 show a rotation period of 14.85 ± 0.01 hours with a brightness variation of 0.12 ± 0.02 magnitude.
References
External links , Palmer Divide Observatory, B. D. Warner (2006) Asteroid Lightcurve Database (LCDB), query form (info ) Dictionary of Minor Planet Names, Google books Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center