At 21:57 UT, on Thursday, July 8, 2010, this 50 km wide asteroid occulted the star Delta Ophiuchi in an event lasting about five seconds. The occultation path crossed central Europe along a band that ran through Stockholm, Copenhagen, Bremen, Nantes and Bilbao. This was the only asteroid occultation event visible to the naked eye during the 21st century.
This is a member of the dynamic Maria family of asteroids that were probably formed as the result of a collisional breakup of a parent body.
^Sheridan, Edwin E. (2003). "Rotation periods and lightcurve photometry of 322 Phaeo and 472 Roma". The Minor Planet Bulletin (Minor Planets Section of the Association of Lunar and Planetary Observers) 30 (2): 28. Bibcode:2003MPBu...30...28S. ISSN1052-8091.
^Schmadel, Lutz D. (2003). Dictionary of minor planet names. Physics and astronomy online library (5th ed.). Springer. p. 52. ISBN3-540-00238-3.