A new large super-fast rotator: (335433) 2005 UW163

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101235

Title:	A new large super-fast rotator: (335433) 2005 UW163
Authors:	葉永烜;Chang, Chan-Kao;Waszczak, Adam;Lin, Hsing-Wen;Ip, Wing-Huen;Prince, Thomas A.;Kulkarni, Shrinivas R.;Laher, Russ;Surace, Jason
Contributors:	理學院天文研究所
Keywords:	ASTEROIDS;ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;COLOR;DIAGRAMS;PLANETS;ROTATION;SPIN;TELESCOPES;VARIATIONS;VISIBLE RADIATION
Date:	2014-08-20
Issue Date:	2026-04-21 14:28:07 (UTC+8)
Publisher:	IOP Publishing Ltd.;United States
Abstract:	摘要： Asteroids of size larger than 150 m generally do not have rotation periods smaller than 2.2 hr. This spin cutoff is believed to be due to the gravitationally bound rubble-pile structures of the asteroids. Rotation with periods exceeding this critical value will cause asteroid breakup. Up until now, only one object, 2001 OE84, has been found to be an exception to this spin cutoff. We report the discovery of a new super-fast rotator, (335433) 2005 UW163, spinning with a period of 1.290 hr and a light curve variation of r' ∼ 0.8 mag from the observations made at the P48 telescope and the P200 telescope of the Palomar Observatory. Its H{sub r{sup ′}}=17.69±0.27 mag and multi-band colors (i.e., g' – r' = 0.68 ± 0.03 mag, r' – i' = 0.19 ± 0.02 mag and SDSS i – z = –0.45 mag) show it is a V-type asteroid with a diameter of 0.6 + 0.3/ – 0.2 km. This indicates (335433) 2005 UW163 is a super-fast rotator beyond the regime of the small monolithic asteroid. 出版者： United States 出版日期： 2014-08-20 出處： Astrophysical journal. Letters, 2014-08, Vol.791 (2), p.L35 資源來源： Institute of Physics Journals 識別號： ISSN: 2041-8213 識別號： ISSN: 2041-8205 識別號： EISSN: 2041-8213 識別號： DOI: 10.1088/2041-8205/791/2/L35
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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