Two Periods of 1999 HF1-Another Binary NEA Candidate

Details Two Periods of 1999 HF1-Another Binary NEA Candidate Two Periods of 1999 HF1-Another Binary NEA Candidate

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002icar..158..276p&link_type=abstract

Icarus, Volume 158, Issue 1, p. 276-280.

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9

Scientific paper

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 primary's bulk density is >2.0 g/cm3, and it belongs to the E/M/P taxonomic class.

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