Articulo
Mass and Density of the B-type Asteroid (702) Alauda
Fecha
2011Registro en:
15010003
WOS:000286662000008
eid=2-s2.0-84891211484
Institución
Resumen
Observations with the adaptive optics system on the Very Large Telescope reveal that outer main belt asteroid (702) Alauda has a small satellite with primary to secondary diameter ratio of ∼56. The secondary revolves around the primary in 4.9143 ± 0.007 days at a distance of 1227 ± 24 km, yielding a total system mass of (6.057 ± 0.36) × 1018 kg. Combined with an IRAS size measurement, our data yield a bulk density for this B-type asteroid of 1570 ± 500 kg~m−3.