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Updated: Dec 20, 2025

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
LIGHTCURVE ANALYSIS OF THE NEA BINARY ASTEROID 5381 SEKHMET
Brian D Warner1, Alan W Harris2
1Center for Solar System Studies / MoreData!, 446 Sycamore Ave., Eaton, CO 80615 USA.
Abstract:
Radar observations in 2003 (Nolan et al., 2003) showed that the near-Earth asteroid (NEA) 5381 Sekhmet was a binary. CCD photometry observations made from the Center for Solar System Studies-Palmer Divide Station (CS3-PDS) during the 2014 apparition confirmed the discovery and found the first precise values for the primary rotation period, P = 2.8233 ± 0.0001 h, and the orbital period of the satellite, P = 12.379 ± 0.004 h. The estimated effective size ratio of the two bodies is Ds/Dp ≥ 0.25 ± 0.02, which is good agreement with the sizes estimated by radar.
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