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  Thermal infrared and optical photometry of Asteroidal Comet C/2002 CE10

Sekiguchi, T., Miyasaka, S., Dermawan, B., Mueller, T., Takato, N., Watanabe, J., et al. (2018). Thermal infrared and optical photometry of Asteroidal Comet C/2002 CE10. Icarus, 304, 95-100. doi:10.1016/j.icarus.2017.12.037.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-BA8C-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-4438-4
Genre: Journal Article

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 Creators:
Sekiguchi, Tomohiko, Author
Miyasaka, Seidai, Author
Dermawan, Budi, Author
Mueller, Thomas, Author
Takato, Naruhisa, Author
Watanabe, Junichi, Author
Böhnhardt, Hermann1, 2, Author              
Affiliations:
1MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832291              
2Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, Justus-von-Liebig-Weg 3, 37077 Göttingen, DE, ou_1832288              

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 MPIS_PROJECTS: Ground-based Obs.
 Abstract: C/2002 CE10 is an object in a retrograde elliptical orbit with Tisserand parameter -0.853 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  ±  0.05 h. The effective diameter and the geometric albedo are 17.9  ±  0.9 km and 0.03  ±  0.01, 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.

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Language(s): eng - English
 Dates: 2018-03-052018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.icarus.2017.12.037
 Degree: -

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Title: Icarus
Source Genre: Journal
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Publ. Info: Amsterdam : Academic Press
Pages: - Volume / Issue: 304 Sequence Number: - Start / End Page: 95 - 100 Identifier: ISSN: 0019-1035
CoNE: /journals/resource/954922645023