کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8134413 | 1523487 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal infrared and optical photometry of Asteroidal Comet C/2002Â CE10
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermal infrared and optical photometry of Asteroidal Comet C/2002Â CE10 Thermal infrared and optical photometry of Asteroidal Comet C/2002Â CE10](/preview/png/8134413.png)
چکیده انگلیسی
C/2002 CE10 is an object in a retrograde elliptical orbit with Tisserand parameter â0.853 indicating a likely origin in the Oort Cloud. It appears to be a rather inactive comet since no coma and only a very weak tail was detected during the past perihelion passage. We present multi-color optical photometry, lightcurve and thermal mid-IR observations of the asteroidal comet. With the photometric analysis in BVRI, the surface color is found to be redder than asteroids, corresponding to cometary nuclei and TNOs/Centaurs. The time-resolved differential photometry supports a rotation period of 8.19 â¯Â±â¯â0.05 h. The effective diameter and the geometric albedo are 17.9ââ¯Â±â¯â0.9 km and 0.03ââ¯Â±â¯â0.01, respectively, indicating a very dark reflectance of the surface. The dark and redder surface color of C/2002 CE10 may be attribute to devolatilized material by surface aging suffered from the irradiation by cosmic rays or from impact by dust particles in the Oort Cloud. Alternatively, C/2002 CE10 was formed of very dark refractory material originally like a rocky planetesimal. In both cases, this object lacks ices (on the surface at least). The dynamical and known physical characteristics of C/2002 CE10 are best compatible with those of the Damocloids population in the Solar System, that appear to be exhaust cometary nucleus in Halley-type orbits. The study of physical properties of rocky Oort cloud objects may give us a key for the formation of the Oort cloud and the solar system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 304, April 2018, Pages 95-100
Journal: Icarus - Volume 304, April 2018, Pages 95-100
نویسندگان
Tomohiko Sekiguchi, Seidai Miyasaka, Budi Dermawan, Thomas Mueller, Naruhisa Takato, Junichi Watanabe, Hermann Boehnhardt,