Detection of Rotational Acceleration of Bennu using HST Lightcurve Observations

Preprint English OPEN
Nolan, Michael C.; Howell, Ellen S.; Scheeres, Daniel J.; McMahon, Jay W.; Golubov, Oleksiy; Hergenrother, Carl W.; Emery, Joshua P.; Noll, Keith S.; Chesley, Steven R.; Lauretta, Dante S.;
(2019)
  • Related identifiers: doi: 10.1029/2018GL080658
  • Subject: Astrophysics - Earth and Planetary Astrophysics | Physics - Geophysics
    arxiv: Astrophysics::Earth and Planetary Astrophysics

We observed the near-Earth asteroid (101955) Bennu from the ground in 1999 and 2005, and with the Hubble Space Telescope in 2012, to constrain its rotation rate. The data reveal an acceleration of $2.64 \pm 1.05 \times 10^{-6} \mathrm{deg\ day}^{-2}$, which could be due... View more
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