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

F. Preusker; F. Scholten; K. D. Matz; T. Roatsch; S. F. Hviid; S. Mottola; J. Knollenberg; E. Kührt; M. Pajola; N. Oklay; J. B. Vincent; B. Davidsson; M. F. A'Hearn; J. Agarwal; C. Barbieri; M. A. Barucci; J. L. Bertaux; I. Bertini; G. Cremonese; V. Da Deppo; S. Debei; M. De Cecco; S. Fornasier; M. Fulle; O. Groussin; P. J. Gutiérrez; C. Güttler; W. H. Ip; L. Jorda; H. U. Keller; D. Koschny; J. R. Kramm; M. Küppers; P. Lamy; L. M. Lara; M. Lazzarin; J. J. Lopez Moreno; F. Marzari; M. Massironi; G. Naletto; H. Rickman; R. Rodrigo; H. Sierks; N. Thomas; C. Tubiana

doi:10.1051/0004-6361/201731798

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

F. Preusker, F. Scholten, K. D. Matz, T. Roatsch, S. F. Hviid, S. Mottola, J. Knollenberg, E. Kührt, M. Pajola, N. Oklay, J. B. Vincent, B. Davidsson, M. F. A'Hearn, J. Agarwal, C. Barbieri, M. A. Barucci, J. L. Bertaux, I. Bertini, G. Cremonese, V. Da DeppoS. Debei, M. De Cecco, S. Fornasier, M. Fulle, O. Groussin, P. J. Gutiérrez, C. Güttler, W. H. Ip, L. Jorda, H. U. Keller, D. Koschny, J. R. Kramm, M. Küppers, P. Lamy, L. M. Lara, M. Lazzarin, J. J. Lopez Moreno, F. Marzari, M. Massironi, G. Naletto, H. Rickman, R. Rodrigo, H. Sierks, N. Thomas, C. Tubiana

Graduate Institute of Astronomy

Research output: Contribution to journal › Article › peer-review

88 Scopus citations

Abstract

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.

Original language	English
Article number	L1
Journal	Astronomy and Astrophysics
Volume	607
DOIs	https://doi.org/10.1051/0004-6361/201731798
State	Published - 1 Nov 2017

Keywords

Comets: individual: 67P/Churyumov-Gerasimenko
Methods: data analysis
Planets and satellites: surfaces
Techniques: image processing

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Preusker, F., Scholten, F., Matz, K. D., Roatsch, T., Hviid, S. F., Mottola, S., Knollenberg, J., Kührt, E., Pajola, M., Oklay, N., Vincent, J. B., Davidsson, B., A'Hearn, M. F., Agarwal, J., Barbieri, C., Barucci, M. A., Bertaux, J. L., Bertini, I., Cremonese, G., ... Tubiana, C. (2017). The global meter-level shape model of comet 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics, 607, [L1]. https://doi.org/10.1051/0004-6361/201731798

@article{e982aaab2f62486191a4f40c2d8568ae,

title = "The global meter-level shape model of comet 67P/Churyumov-Gerasimenko",

abstract = "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.",

keywords = "Comets: individual: 67P/Churyumov-Gerasimenko, Methods: data analysis, Planets and satellites: surfaces, Techniques: image processing",

author = "F. Preusker and F. Scholten and Matz, {K. D.} and T. Roatsch and Hviid, {S. F.} and S. Mottola and J. Knollenberg and E. K{\"u}hrt and M. Pajola and N. Oklay and Vincent, {J. B.} and B. Davidsson and A'Hearn, {M. F.} and J. Agarwal and C. Barbieri and Barucci, {M. A.} and Bertaux, {J. L.} and I. Bertini and G. Cremonese and {Da Deppo}, V. and S. Debei and {De Cecco}, M. and S. Fornasier and M. Fulle and O. Groussin and Guti{\'e}rrez, {P. J.} and C. G{\"u}ttler and Ip, {W. H.} and L. Jorda and Keller, {H. U.} and D. Koschny and Kramm, {J. R.} and M. K{\"u}ppers and P. Lamy and Lara, {L. M.} and M. Lazzarin and {Lopez Moreno}, {J. J.} and F. Marzari and M. Massironi and G. Naletto and H. Rickman and R. Rodrigo and H. Sierks and N. Thomas and C. Tubiana",

note = "Publisher Copyright: {\textcopyright} ESO, 2017.",

year = "2017",

month = nov,

day = "1",

doi = "10.1051/0004-6361/201731798",

language = "???core.languages.en_GB???",

volume = "607",

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Preusker, F, Scholten, F, Matz, KD, Roatsch, T, Hviid, SF, Mottola, S, Knollenberg, J, Kührt, E, Pajola, M, Oklay, N, Vincent, JB, Davidsson, B, A'Hearn, MF, Agarwal, J, Barbieri, C, Barucci, MA, Bertaux, JL, Bertini, I, Cremonese, G, Da Deppo, V, Debei, S, De Cecco, M, Fornasier, S, Fulle, M, Groussin, O, Gutiérrez, PJ, Güttler, C, Ip, WH, Jorda, L, Keller, HU, Koschny, D, Kramm, JR, Küppers, M, Lamy, P, Lara, LM, Lazzarin, M, Lopez Moreno, JJ, Marzari, F, Massironi, M, Naletto, G, Rickman, H, Rodrigo, R, Sierks, H, Thomas, N & Tubiana, C 2017, 'The global meter-level shape model of comet 67P/Churyumov-Gerasimenko', Astronomy and Astrophysics, vol. 607, L1. https://doi.org/10.1051/0004-6361/201731798

TY - JOUR

T1 - The global meter-level shape model of comet 67P/Churyumov-Gerasimenko

AU - Preusker, F.

AU - Scholten, F.

AU - Matz, K. D.

AU - Roatsch, T.

AU - Hviid, S. F.

AU - Mottola, S.

AU - Knollenberg, J.

AU - Kührt, E.

AU - Pajola, M.

AU - Oklay, N.

AU - Vincent, J. B.

AU - Davidsson, B.

AU - A'Hearn, M. F.

AU - Agarwal, J.

AU - Barbieri, C.

AU - Barucci, M. A.

AU - Bertaux, J. L.

AU - Bertini, I.

AU - Cremonese, G.

AU - Da Deppo, V.

AU - Debei, S.

AU - De Cecco, M.

AU - Fornasier, S.

AU - Fulle, M.

AU - Groussin, O.

AU - Gutiérrez, P. J.

AU - Güttler, C.

AU - Ip, W. H.

AU - Jorda, L.

AU - Keller, H. U.

AU - Koschny, D.

AU - Kramm, J. R.

AU - Küppers, M.

AU - Lamy, P.

AU - Lara, L. M.

AU - Lazzarin, M.

AU - Lopez Moreno, J. J.

AU - Marzari, F.

AU - Massironi, M.

AU - Naletto, G.

AU - Rickman, H.

AU - Rodrigo, R.

AU - Sierks, H.

AU - Thomas, N.

AU - Tubiana, C.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - 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.

AB - 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.

KW - Comets: individual: 67P/Churyumov-Gerasimenko

KW - Methods: data analysis

KW - Planets and satellites: surfaces

KW - Techniques: image processing

UR - http://www.scopus.com/inward/record.url?scp=85032747035&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201731798

DO - 10.1051/0004-6361/201731798

M3 - 期刊論文

AN - SCOPUS:85032747035

SN - 0004-6361

VL - 607

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - L1

ER -

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

Abstract

Keywords

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