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Dover, L; Lowry, S C; Rożek, A; Rozitis, B; Jackson, S L; Zegmott, T; Krugly, Yu N; Belskaya, I N; Fitzsimmons, A; Green, S F; Snodgrass, C; Weissman, P R; Brozović, M; Benner, L A M; Busch, M W; Ayvazian, V R; Chiorny, V; Inasaridze, R Ya; Krugov, M; Mykhailova, S; Reva, I; Hibbert, J
Monthly Notices of the Royal Astronomical Society, 09/2023, Letnik: 525, Številka: 3Journal Article
ABSTRACT We present a physical model and spin-state analysis of the potentially hazardous asteroid (23187) 2000 PN9. As part of a long-term campaign to make direct detections of the Yarkovsky–O’Keefe–Radzievskii–Paddack (YORP) effect, we collected optical light curves of the asteroid between 2006 and 2020. These observations were combined with planetary radar data to develop a detailed shape model, which was used to search for YORP acceleration. We report that 2000 PN9 is a relatively large top-shaped body with a sidereal rotation period of 2.53216 ± 0.00015 h. Although we find no evidence for rotational acceleration, YORP torques smaller than $\sim 10^{-8}\, \rm rad\,{d}^{-2}$ cannot be ruled out. It is likely that 2000 PN9 is a YORP-evolved object, and may be an example of YORP equilibrium or self-limitation.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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