The global meter-level shape model of comet 67P/Churyumov-Gerasimenko - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 2017

The global meter-level shape model of comet 67P/Churyumov-Gerasimenko

Frank Preusker
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K.-D. Matz
Maurizio Pajola
Jean-Loup Bertaux
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Pedro J. Gutiérrez
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Laurent Jorda
Michael Küppers


We performed a stereo-photogrammetric (SPG) analysis of more than 1500 Rosetta/OSIRIS NAC images of comet 67P/Churyumov-Gerasimenko (67P). The images with pixel scales in the range 0.2−3.0 m/pixel were acquired between August 2014 and February 2016. We finally derived a global high-resolution 3D description of 67P’s surface, the SPG SHAP7 shape model. It consists of about 44 million facets (1−1.5 m horizontal sampling) and a typical vertical accuracy at the decimeter scale. Although some images were taken after perihelion, the SPG SHAP7 shape model can be considered a pre-periheliondescription and replaces the previous SPG SHAP4S shape model. From the new shape model, some measures for 67P with very low 3σ uncertainties can be retrieved: 18.56 km3 ± 0.02 km3 for the volume and 537.8 kg/m3 ± 0.7 kg/m3 for the mean density assuming a mass value of 9.982 × 1012 kg.
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insu-01631548 , version 1 (11-11-2020)



Frank Preusker, F. Scholten, K.-D. Matz, T. Roatsch, S. F. Hviid, et al.. The global meter-level shape model of comet 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics - A&A, 2017, 607 (November), L1 (5 p.). ⟨10.1051/0004-6361/201731798⟩. ⟨insu-01631548⟩
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