The global meter-level shape model of comet 67P/Churyumov-Gerasimenko
Frank Preusker
(1)
,
F. Scholten
(1)
,
K.-D. Matz
(1)
,
T. Roatsch
(1)
,
S. F. Hviid
(1)
,
S. Mottola
(1)
,
Jörg Knollenberg
(1)
,
Ekkehard Kührt
(1)
,
Maurizio Pajola
(2)
,
Nilda Oklay
(1)
,
Jean-Baptiste Vincent
(1)
,
Björn Davidsson
(3)
,
Michael F. A'Hearn
(4)
,
Jessica Agarwal
(5)
,
Cesare Barbieri
(6)
,
Maria Antonella Barucci
(7)
,
Jean-Loup Bertaux
(8)
,
Ivano Bertini
(9)
,
Gabriele Cremonese
(10)
,
Vania da Deppo
(11)
,
Stefano Debei
(12)
,
Mariolino de Cecco
(13)
,
Sonia Fornasier
(7)
,
Marco Fulle
(14)
,
Olivier Groussin
(15)
,
Pedro J. Gutiérrez
(16)
,
Carsten Güttler
(5)
,
Wing-Huen Ip
(17, 18)
,
Laurent Jorda
(15)
,
Horst Uwe Keller
(19, 1)
,
Detlef Koschny
(20)
,
J. Rainer Kramm
(5)
,
Michael Küppers
(21)
,
Philippe Lamy
(15)
,
Luisa-Maria Lara
(16)
,
Monica Lazzarin
(6)
,
José-Juan López-Moreno
(16)
,
Francesco Marzari
(6)
,
Matteo Massironi
(9)
,
Giampiero Naletto
(9, 11, 22)
,
Hans Rickman
(3, 23)
,
Rafael Rodrigo
(24, 25)
,
Holger Sierks
(5)
,
Nicholas Thomas
(26)
,
Cécilia Tubiana
(5)
1
DLR Institut für Planetenforschung
2 ARC - NASA Ames Research Center
3 Department of Physics and Astronomy [Uppsala]
4 Department of Astronomy [College Park]
5 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
6 Dipartimento di Fisica e Astronomia "Galileo Galilei"
7 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
8 PLANETO - LATMOS
9 CISAS - Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo”
10 OAPD - INAF - Osservatorio Astronomico di Padova
11 IFN - CNR Istituto di Fotonica e Nanotecnologie [Padova]
12 Department of Industrial Engineering [Padova]
13 UNITN - Università degli Studi di Trento = University of Trento
14 OAT - INAF - Osservatorio Astronomico di Trieste
15 LAM - Laboratoire d'Astrophysique de Marseille
16 IAA - Instituto de Astrofísica de Andalucía
17 SSI - Space Science Institute [Macau]
18 IANCU - Institute of Astronomy [Taiwan]
19 IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
20 ESTEC - European Space Research and Technology Centre
21 ESAC - European Space Astronomy Centre
22 DEI - Department of Information Engineering [Padova]
23 CBK - Space Research Centre of Polish Academy of Sciences
24 CAB - Centro de Astrobiologia [Madrid]
25 ISSI - International Space Science Institute [Bern]
26 Physikalisches Institut [Bern]
2 ARC - NASA Ames Research Center
3 Department of Physics and Astronomy [Uppsala]
4 Department of Astronomy [College Park]
5 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
6 Dipartimento di Fisica e Astronomia "Galileo Galilei"
7 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
8 PLANETO - LATMOS
9 CISAS - Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo”
10 OAPD - INAF - Osservatorio Astronomico di Padova
11 IFN - CNR Istituto di Fotonica e Nanotecnologie [Padova]
12 Department of Industrial Engineering [Padova]
13 UNITN - Università degli Studi di Trento = University of Trento
14 OAT - INAF - Osservatorio Astronomico di Trieste
15 LAM - Laboratoire d'Astrophysique de Marseille
16 IAA - Instituto de Astrofísica de Andalucía
17 SSI - Space Science Institute [Macau]
18 IANCU - Institute of Astronomy [Taiwan]
19 IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
20 ESTEC - European Space Research and Technology Centre
21 ESAC - European Space Astronomy Centre
22 DEI - Department of Information Engineering [Padova]
23 CBK - Space Research Centre of Polish Academy of Sciences
24 CAB - Centro de Astrobiologia [Madrid]
25 ISSI - International Space Science Institute [Bern]
26 Physikalisches Institut [Bern]
K.-D. Matz
- Fonction : Auteur
- PersonId : 769363
- ORCID : 0000-0002-4148-1926
Maurizio Pajola
- Fonction : Auteur
- PersonId : 767226
- ORCID : 0000-0002-3144-1277
Cesare Barbieri
- Fonction : Auteur
- PersonId : 757032
- ORCID : 0000-0002-6257-9076
Vania da Deppo
- Fonction : Auteur
- PersonId : 763247
- ORCID : 0000-0001-6273-8738
Wing-Huen Ip
- Fonction : Auteur
- PersonId : 770404
- ORCID : 0000-0001-5368-386X
Laurent Jorda
- Fonction : Auteur
- PersonId : 746464
- IdHAL : laurent-jorda
- ORCID : 0000-0001-8735-3308
- IdRef : 180975161
Michael Küppers
- Fonction : Auteur
- PersonId : 757030
- ORCID : 0000-0002-5666-8582
Résumé
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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