A Fireball and Potentially Hazardous Binary Near-Earth Asteroid (164121) 2003 YT$_1$
| Autor: | Masayoshi Ueda, Yasunori Fujiwara, Chie Tsuchiya, Mikiya Sato, Toshihiro Kasuga, Jun-ichi Watanabe |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Popis: | We present a fireball detected in the night sky over Kyoto, Japan on UT 2017 April 28 at ${\rm 15^{h}\,58^{m}\,19^{s}}$ by the SonotaCo Network. The absolute visual magnitude is $M_{\rm v}$=$-$4.10$\pm$0.42mag. Luminous light curves obtain a meteoroid mass $m$=29$\pm$1g, corresponding to the size $a_{\rm s}$=2.7$\pm$0.1cm. Orbital similarity assessed by D-criterions (cf. $D_{\rm SH}$=0.0079) has identified a likely parent, the binary near-Earth asteroid (164121) 2003 YT$_1$. The suggested binary formation process is a YORP-driven rotational disintegration (Pravec & Harris 2007). The asynchronous state indicates the age of $ Comment: 36 pages, AJ, in press |
| Databáze: | OpenAIRE |
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