✦ LIBER ✦
Two Periods of 1999 HF1—Another Binary NEA Candidate
✍ Scribed by Petr Pravec; Lenka Šarounová; Michael D. Hicks; David L. Rabinowitz; Marek Wolf; Peter Scheirich; Yurij N. Krugly
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 200 KB
- Volume
- 158
- Category
- Article
- ISSN
- 0019-1035
No coin nor oath required. For personal study only.
✦ Synopsis
Photometric observations of 1999 HF 1 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-primarydiameter 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/cm 3 , and it belongs to the E/M/P taxonomic class.