Detection of Rotational Acceleration of Bennu Using HST Light Curve Observations by M. C. Nolan, E. S. Howell, D. J. Scheeres, J. W. McMahon, O. Golubov, C. W. Hergenrother, J. P. Emery, K. S. Noll, S. R. Chesley, D. S. Lauretta

“…Those measurements should show whether the change in rotation rate is a steady increase (due, e.g., to the Yarkovsky‐O'Keefe‐Radzievskii‐Paddack effect) or some other phenomenon. …”
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A contact binary satellite of the asteroid (152830) Dinkinesh by Levison, HF, Marchi, S, Noll, KS, Spencer, JR, Statler, TS, Bell, JF, Bierhaus, EB, Binzel, R, Bottke, WF, Britt, D, Brown, ME, Buie, MW, Christensen, PR, Dello Russo, N, Emery, JP, Grundy, WM, Hahn, M, Hamilton, VE, Howett, C, Kaplan, H, Kretke, K, Lauer, TR, Manzoni, C, Marschall, R

“…Asteroids with diameters less than about 5 km have complex histories because they are small enough for radiative torques (that is, YORP, short for the Yarkovsky–O’Keefe–Radzievskii–Paddack effect)1 to be a notable factor in their evolution2. (152830) Dinkinesh is a small asteroid orbiting the Sun near the inner edge of the main asteroid belt with a heliocentric semimajor axis of 2.19 au; its S-type spectrum3, 4 is typical of bodies in this part of the main belt5. …”