1858 Lobachevsk

1858 Lobachevsk (or Lobachevskij) is an asteroid that was discovered August 18, 1972, by L. V. Zhuravleva. The asteroid was named in honor of mathematician Nikolai Lobachevsky. [http://ssd.jpl.nasa.gov/sbdb.cgi#top JPL Small-Body Database Browser ] ] It is 17 km in diameter. http://www.asteroidoccultation.com/2007_06/0615_1858_10446_Summary.txt]

In a May 2002 photographic survey, United States astronomers found the rotation period of this particular to be 7.00 plus or minus 0.01 h, with an amplitude of 0.6 mag. [Ditteon, R.; Bixby, A. R.; Sarros, A. M.; Waters, C. T. "Rotation Periods and Lightcurves of 1858 Lobachevskij, 2384 Schulhof and (5515) 1989 EL1," The Minor Planet Bulletin, December 2002, Volume 29, p.69.] Its absolute magnitude was determined to be 11.5.

The asteroid covered a 10.4 mag star -- a phenomenon known as occultation -- in the constellation Sagittarius in June 2007. It was predicted that the event could be seen in the northeastern United States and southeast Canada. The combined light magnitude of the bodies would drop momentarily -- for a maximum of 2.2seconds.

Zhuravleva is ranked 43 in Harvard's ranking of those who discovered minor planets. She discovered 200 such bodies, 13 of which were co-discoveries, between 1972 and 1992. [ [http://cfa-www.harvard.edu/iau/lists/MPDiscsNum.html Minor Planet Discoverers ] ]

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