DUST FROM COMET 209P/LINEAR DURING ITS 2014 RETURN: PARENT BODY OF A NEW METEOR SHOWER, THE MAY CAMELOPARDALIDS
- Ishiguro, Masateru
- Kuroda, Daisuke
- Hanayama, Hidekazu
- Takahashi, Jun
- Hasegawa, Sunao
- Sarugaku, Yuki
- Watanabe, Makoto
- Imai, Masataka
- Goda, Shuhei
- Akitaya, Hiroshi
- Takagi, Yuhei
- Morihana, Kumiko
- Honda, Satoshi
- Arai, Akira
- Sekiguchi, Kazuhiro
- Oasa, Yumiko
- Saito, Yoshihiko
- Morokuma, Tomoki
- Murata, Katsuhiro
- Nogami, Daisaku
- Nagayama, Takahiro
- Yanagisawa, Kenshi
- Yoshida, Michitoshi
- Ohta, Kouji
- Kawai, Nobuyuki
- Miyaji, Takeshi
- Fukushima, Hideo
- Watanabe, Jun-Ichi
- Opitom, Cyrielle
- Jehin, Emmanuël
- Gillon, Michael
- Vaubaillon, Jeremie
DOIAbstract
International audienceWe report a new observation of the Jupiter family comet 209P/LINEAR during its 2014 return. The comet is recognized as a dust source of a new meteor shower, the May Camelopardalids. 209P/LINEAR was apparently inactive at a heliocentric distance r h = 1.6 AU and showed weak activity at r h 1.4 AU. We found an active region of <0.001% of the entire nuclear surface during the comet's dormant phase. An edge-on image suggests that particles up to 1 cm in size (with an uncertainty of factor 3–5) were ejected following a differential power-law size distribution with index q = −3.25 ± 0.10. We derived a mass-loss rate of 2–10 kg s −1 during the active phase and a total mass of ≈5 × 10 7 kg during the 2014 return. The ejection ...
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