Physics
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mpbu...37...70w&link_type=abstract
The Minor Planet Bulletin (ISSN 1052-8091). Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Obse
Physics
2
Scientific paper
We report on our CCD photometric observations and analysis of three Hungaria asteroids. 1509 Esclangona, was a known binary before observations were started. Periods of 3.25283 ± 0.00002 h and 6.6422 ± 0.0003 h are found, with amplitudes of 0.13 mag and 0.04 mag. They are likely the individual rotations of the primary and secondary, respectively. 2131 Mayall and (26471) 2000 AS152, are new binary discoveries stemming from the on-going study of the Hungaria asteroids at the Palmer Divide Observatory. Both had previously reported lightcurve solutions with no evidence of binary nature. For 2131 Mayall, Pprimary = 2.5678 ± 0.0001 h; and Porb = 23.48 ± 0.01 h with amplitudes of Aprimary = 0.09 mag and Asecondary = 0.05 mag. For (26471) 2000 AS152 we report: Pprimary = 2.68679 ± 0.00003 h, Porb = 39.28 ± 0.01 h, and Aprimary = 0.22 mag. The latter two cases demonstrate why NEA and inner mainbelt objects that fit the general characteristics of potential binaries (P = 2-5 h; D < 10 km, A < 0.30 mag) should be observed at various viewing geometries to determine their true nature.
Behrend Raoul
Casulli Silvano
Cooney Walter R. Jr.
Durkee Russ
Gajdoš Štefan
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