Physical modelling of near-Earth asteroid (23187) 2000 PN9 with ground-based optical and radar observations

被引：1

作者：

Dover, L. ^{[1
]}

Lowry, S. C. ^{[1
,2
]}

Rozek, A. ^{[1
]}

Rozitis, B. ^{[3
]}

Jackson, S. L. ^{[3
]}

Zegmott, T. ^{[1
]}

Krugly, Yu N. ^{[4
,5
]}

Belskaya, I. N. ^{[4
,6
]}

Fitzsimmons, A. ^{[7
]}

Green, S. F.

Snodgrass, C. ^{[2
]}

Weissman, P. R. ^{[8
]}

Brozovic, M. ^{[9
]}

Benner, L. A. M. ^{[9
]}

Busch, M. W. ^{[10
]}

Ayvazian, V. R. ^{[11
,12
]}

Chiorny, V ^{[4
]}

Inasaridze, R. Ya ^{[11
,12
]}

Krugov, M. ^{[13
]}

Mykhailova, S. ^{[4
,5
]}

Reva, I ^{[13
]}

Hibbert, J. ^{[14
]}

机构：

[1] Univ Kent, Ctr Astrophys & Planetary Sci, Canterbury CT2 7NH, Kent, England

[2] Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Scotland

[3] Open Univ, Sch Phys Sci, Planetary & Space Sci, Milton Keynes MK7 6AA, England

[4] Kharkov Natl Univ, Inst Astron, UA-61022 Kharkiv, Ukraine

[5] Adam Mickiewicz Univ, Astron Observ Inst, Fac Phys, <acute accent>, PL-60286 Poznan, Poland

[6] Univ Paris Cite, Univ PSL, Sorbonne Univ, LESIA, F-92195 Meudon, France

[7] Queens Univ Belfast, Astrophys Res Ctr, Belfast BT7 1NN, North Ireland

[8] Planetary Sci Inst, Tucson, AZ 85719 USA

[9] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[10] SETI Inst, Mountain View, CA 94032 USA

[11] E Kharadze Georgian Natl Astrophys Observ, Abastumani 0301, Georgia

[12] Samtskhe Javakheti State Univ, Akhaltsikhe 0080, Georgia

[13] Fesenkov Astrophys Inst, Alma Ata 050020, Kazakhstan

[14] Isaac Newton Grp, Apartado correos 321, E-38700 Santa Cruz De La Palma, Canary Islands, Spain

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 525卷 / 03期

基金：

英国科学技术设施理事会; 美国国家航空航天局;

关键词：

radiation mechanisms: thermal; methods: data analysis; methods: observational; techniques: photometric; techniques: radar astronomy; minor planets; asteroids: individual: (23187) 2000 PN9; 2100; RA-SHALOM; INFRARED OBSERVATIONS; LIGHTCURVE INVERSION; OPTIMIZATION METHODS; ROTATIONAL BREAKUP; SURFACE-ROUGHNESS; 101955; BENNU; 3103; EGER; SPIN-UP; YORP;

D O I：

10.1093/mnras/stad2528

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a physical model and spin-state analysis of the potentially hazardous asteroid (23187) 2000 PN9. As part of a longterm 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 similar to 10( -8) 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.

引用

页码：4581 / 4595

页数：15

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