Author/Authors :
Pravec، نويسنده , , Petr and ?arounov?، نويسنده , , Lenka and Hicks، نويسنده , , Michael D. and Rabinowitz، نويسنده , , David L. and Wolf، نويسنده , , Marek and Scheirich، نويسنده , , Peter and Krugly، نويسنده , , Yurij N.، نويسنده ,
Abstract :
Photometric observations of 1999 HF1 reveal that its lightcurve has two components of low amplitudes (0.10–0.12 mag) and different periods (2.3191 and 14.02 h). It is likely another binary near-Earth asteroid; its lower limit on the secondary-to-primary-diameter ratio is ≈0.2, the radius of the mutual orbit is (2.0±0.3)× the effective primary diameter, the primaryʹs bulk density is >2.0 g/cm3, and it belongs to the E/M/P taxonomic class.
