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The CHEOPS mission

Benz, W. and Broeg, Chris and Fortier, Andrea and Rando, N. and Beck, T. and Beck, M. and Queloz, D and Ehrenreich, David and Maxted, P. F. L. and Isaak, K. G. and Billot, N. and Alibert, Y. and Alonso, R. and Antonio, C. and Asquier, J. and Bandy, T. and Bàrczy, T. and Barrado, David and Barros, S. C. C. and Baumjohann, W. and Bekkelien, A. and Bergomi, M. and Biondi, F. and Bonfils, X. and Borsato, L. and Brandeker, A. and Busch, M.-D. and Cabrera Perez, J. and Cessa, V. and Charnoz, S. and Chazelas, B and Collier Cameron, A. and Corral Van Damme, C. and Cortes, D. and Davies, M. B. and Deleuil, M and Deline, A. and Delrez, L. and Demangeon, O. D. S. and Demory, B. O. and Erikson, Anders and Farinato, J. and Fossati, L. and Fridlund, M. and Futyan, D. and Gandolfi, D. and Garcia Munoz, A. and Gillon, M. and Guterman, P. and Gutierrez, A. and Hasiba, J and Heng, K. and Hernandez, E. and Hoyer, S. and Kiss, L. L. and Kovacs, Z. and Kuntzer, T. and Laskar, J. and Lecavelier des Etangs, A. and Lendl, M and López, A. and Lora, I. and Lovis, C. and Lüftinger, T and Magrin, D. and Malvasio, L. and Marafatto, L. and Michaelis, H and de Miguel, D. and Modrego, D. and Munari, M. and Nascimbeni, V. and Olofsson, G. and Ottacher, H and Ottensamer, R. and Pagano, I. and Palacios, R. and Palle, E. and Peter, Gisbert and Piazza, D. and Piotto, G. and Pizarro, A. and Pollaco, Don and Ragazzoni, R. and Ratti, F. and Rauer, Heike and Ribas, I. and Rieder, M. and Rohlfs, R. and Safa, F. and Salatti, M. and Santos, N. C. and Scandariato, G. and Segransan, D. and Simon, A. E. and Smith, A. M. S. and Sordet, M. and Sousa, S. G. and Steller, M. and Szabo, G. M. and Szoke, J. and Thomas, N. and Tschentscher, Matthias and Udry, S. and Van Grootel, V. and Viotto, V. and Walter, Ingo and Walton, N. A. and Wildi, F. and Wolter, D. (2021) The CHEOPS mission. Experimental Astronomy, 51 (1), pp. 109-151. Springer. doi: 10.1007/s10686-020-09679-4. ISSN 0922-6435.

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Official URL: http://dx.doi.org/10.1007/s10686-020-09679-4

Abstract

The CHaracterising ExOPlanet Satellite (CHEOPS) was selected on October 19, 2012, as the first small mission (S-mission) in the ESA Science Programme and successfully launched on December 18, 2019, as a secondary passenger on a Soyuz-Fregat rocket from Kourou, French Guiana. CHEOPS is a partnership between ESA and Switzerland with important contributions by ten additional ESA Member States. CHEOPS is the first mission dedicated to search for transits of exoplanets using ultrahigh precision photometry on bright stars already known to host planets. As a follow-up mission, CHEOPS is mainly dedicated to improving, whenever possible, existing radii measurements or provide first accurate measurements for a subset of those planets for which the mass has already been estimated from ground-based spectroscopic surveys. The expected photometric precision will also allow CHEOPS to go beyond measuring only transits and to follow phase curves or to search for exo-moons, for example. Finally, by unveiling transiting exoplanets with high potential for in-depth characterisation, CHEOPS will also provide prime targets for future instruments suited to the spectroscopic characterisation of exoplanetary atmospheres. To reach its science objectives, requirements on the photometric precision and stability have been derived for stars with magnitudes ranging from 6 to 12 in the V band. In particular, CHEOPS shall be able to detect Earth-size planets transiting G5 dwarf stars (stellar radius of 0:9 R ) in the magnitude range 6 ≤ V ≤ 9 by achieving a photometric precision of 20 ppm in 6 hours of integration time. In the case of K-type stars (stellar radius of 0:7 R ) of magnitude in the range 9 ≤ V ≤ 12, CHEOPS shall be able to detect transiting Neptune-size planets achieving a photometric precision of 85 ppm in 3 hours of integration time. This precision has to be maintained over continuous periods of observation for up to 48 hours. This precision and stability will be achieved by using a single, frame-transfer, back-illuminated CCD detector at the focal plane assembly of a 33:5 cm diameter, on-axis Ritchey-Chretien ´ telescope. The nearly 280 kg spacecraft is nadir-locked, with a pointing accuracy of about 1 arcsec rms, and will allow for at least 1 Gbit/day downlink. The sun-synchronous duskdawn orbit at 700 km altitude enables having the Sun permanently on the backside of the spacecraft thus minimising Earth stray light. A mission duration of 3:5 years in orbit is foreseen to enable the execution of the science programme. During this period, 20% of the observing time is available to the wider community through yearly ESA call for proposals, as well as through discretionary time approved by ESA’s Director of Science. At the time of this writing, CHEOPS commissioning has been completed and CHEOPS has been shown to fulfill all its requirements. The mission has now started the execution of its science programme.

Item URL in elib:https://elib.dlr.de/142443/
Document Type:Article
Title:The CHEOPS mission
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Benz, W.Physikalisches Institut Universität BernUNSPECIFIED
Broeg, ChrisUniversity of Bern, SwitzerlandUNSPECIFIED
Fortier, AndreaUniversity of Bern, SwitzerlandUNSPECIFIED
Rando, N.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Beck, T.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Beck, M.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Queloz, DObservatoire de Geneve, Switzerland)UNSPECIFIED
Ehrenreich, DavidUniversity of Geneva, SwitzerlandUNSPECIFIED
Maxted, P. F. L.Astrophysics Group, Keele University, UKUNSPECIFIED
Isaak, K. G.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Billot, N.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Alibert, Y.Physikalisches Institut, University of Bern;Observatoire de Besançon, Institut UTINAM, FranceUNSPECIFIED
Alonso, R.Instituto de Astrofisica de Canarias, E-38205 La Laguna, Tenerife, SpainUNSPECIFIED
Antonio, C.DEIMOS Engenharia, Lisboa, PortugalUNSPECIFIED
Asquier, J.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Bandy, T.Physikalisches Institut,University of Bern, Sidlerstraße 5, CH-3012 Bern, SwitzerlandUNSPECIFIED
Bàrczy, T.Admatis, Miskolc, HungaryUNSPECIFIED
Barrado, DavidDepartamento de Astrofísica, Centro de Astrobiología (CSIC-INTA), Madrid, SpainUNSPECIFIED
Barros, S. C. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Baumjohann, W.Space Research Institute, Austrian Academy of Sciences, Graz, AustriaUNSPECIFIED
Bekkelien, A.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Bergomi, M.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Biondi, F.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Bonfils, X.Institut de Planétologie et d'Astrophysique, University of Grenoble, FranceUNSPECIFIED
Borsato, L.INAF Astronomical Observatory of Padova, Padova, ItalyUNSPECIFIED
Brandeker, A.Department of Astronomy – Stockholm University, SE-106 91 Stockholm, SwedenUNSPECIFIED
Busch, M.-D.Physikalisches Institut, Universität Bern, SwitzerlandUNSPECIFIED
Cabrera Perez, J.Juan.Cabrera (at) dlr.dehttps://orcid.org/0000-0001-6653-5487
Cessa, V.Center for Space and Habitability, University of Bern, Bern, SwitzerlandUNSPECIFIED
Charnoz, S.Institut de Physique du Globe, Paris, FranceUNSPECIFIED
Chazelas, BObservatory of Geneva University of GenevaUNSPECIFIED
Collier Cameron, A.University of St. Andrews, St. Andrews, UKUNSPECIFIED
Corral Van Damme, C.ESA/ESTEC, NiederlandeUNSPECIFIED
Cortes, D.AIRBUS Defence & Space, Madrid, SpainUNSPECIFIED
Davies, M. B.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIED
Deleuil, MAix Marseille Université, CNRS, LAM (LaboratoireUNSPECIFIED
Deline, A.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Delrez, L.Institut d’Astrophysique et de Geophysique, Universite de Liege, BelgiumUNSPECIFIED
Demangeon, O. D. S.Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France; Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, PortugalUNSPECIFIED
Demory, B. O.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Erikson, AndersDLR Institut für PlanetenforschungUNSPECIFIED
Farinato, J.INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Fossati, L.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIED
Fridlund, M.Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden; Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA Leiden, The NetherlandsUNSPECIFIED
Futyan, D.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Gandolfi, D.Dipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, 10125, Torino, ItalyUNSPECIFIED
Garcia Munoz, A.Zentrum fuer Astronomie und Astrophysik, Technische Universitaet Berlin, GermanyUNSPECIFIED
Gillon, M.Astrobiology Research Unit, Université de Liège, 19C Allée du 6 Août, 4000, Liège, BelgiumUNSPECIFIED
Guterman, P.Laboratoire d'Astrophysique de Marseille, FranceUNSPECIFIED
Gutierrez, A.DEIMOS Engenharia, Lisboa, PortugalUNSPECIFIED
Hasiba, JSpace Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIED
Heng, K.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Hernandez, E.Center for Space and Habitability, Bern, SwitzerlandUNSPECIFIED
Hoyer, S.Aix-Marseille Universite, CNRS, CNES, LAM, Marseille, FranceUNSPECIFIED
Kiss, L. L.Konkoly Observatory, Budapest, HungaryUNSPECIFIED
Kovacs, Z.Admatis, Miskolc, HungaryUNSPECIFIED
Kuntzer, T.Observatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Laskar, J.IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ.,Sorbonne Univ., 77 av. Denfert-Rochereau, 75014 Paris, FranceUNSPECIFIED
Lecavelier des Etangs, A.Institut d’Astrophysique de Paris, FranceUNSPECIFIED
Lendl, MObservatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland; Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, A-8042 Graz, AustriaUNSPECIFIED
López, A.AIRBUS Defence & Space, Madrid, SpainUNSPECIFIED
Lora, I.INTA, Madrid, SpainUNSPECIFIED
Lovis, C.Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIED
Lüftinger, TUniversity of Vienna, Dept. of Astrophysics, Türkenschanzstr. 17, 1180, Vienna, AustriaUNSPECIFIED
Magrin, D.INAF, Astronomical Institute, Padua, ItalyUNSPECIFIED
Malvasio, L.Center for Space and Habitability, Bern, SwitzerlandUNSPECIFIED
Marafatto, L.INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Michaelis, HInstitute of Planetary Research, German Aerospace Center (DLR), Berlin, GermanyUNSPECIFIED
de Miguel, D.AIRBUS Defence & Space, Madrid, SpainUNSPECIFIED
Modrego, D.INTA, Madrid, SpainUNSPECIFIED
Munari, M.INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123 Catania, ItalyUNSPECIFIED
Nascimbeni, V.Dipartimento di Fisica e Astronomia "Galileo Galilei", Universitá di PadovaUNSPECIFIED
Olofsson, G.Stockholm University, SwedenUNSPECIFIED
Ottacher, HSpace Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIED
Ottensamer, R.Dept. of Astrophysics, University of Vienna, AustriaUNSPECIFIED
Pagano, I.INAF - Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123 Catania, ItalyUNSPECIFIED
Palacios, R.AIRBUS Defence & Space, Madrid, SpainUNSPECIFIED
Palle, E.instituto de astrofísica de canarias, 38205 la laguna, tenerife, spain | departamento de astrofisica, universidad de la laguna, 38206 la laguna, spainUNSPECIFIED
Peter, GisbertDLR Institute of Optical Sensor Systems, GermanyUNSPECIFIED
Piazza, D.Physikalisches Institut,University of Bern, Sidlerstraße 5, CH-3012 Bern, SwitzerlandUNSPECIFIED
Piotto, G.INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Pizarro, A.AIRBUS Defence & Space, Madrid, SpainUNSPECIFIED
Pollaco, DonDepartment of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UKUNSPECIFIED
Ragazzoni, R.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Ratti, F.ESA/ESTEC, Noordwijk, NiederlandeUNSPECIFIED
Rauer, HeikeDLR, Institut für Planetenforschung; TU Berlin; FU BerlinUNSPECIFIED
Ribas, I.Institut de Ciencies de l'Espai (ICE, CSIC), C/Can Magrans, s/n, Campus UAB, 08193, Bellaterra, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), 08034, Barcelona, SpainUNSPECIFIED
Rieder, M.Physikalisches Institut,University of Bern, Sidlerstraße 5, CH-3012 Bern, SwitzerlandUNSPECIFIED
Rohlfs, R.Center for Space and Habitability, University of Bern, Bern, SwitzerlandUNSPECIFIED
Safa, F.ESTEC, European Space Agency, Keplerlaan 1, 2201, AZ Noordwijk, The NetherlandsUNSPECIFIED
Salatti, M.Italian Space Agency, Via del Politecnico, 00133, Rome, ItalyUNSPECIFIED
Santos, N. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, PortugalUNSPECIFIED
Scandariato, G.INAF, Osservatorio Astrofisico di Catania, ItalyUNSPECIFIED
Segransan, D.Observatoire de Geneve, Universite de Geneve, SwitzerlandUNSPECIFIED
Simon, A. E.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Smith, A. M. S.alexis.smith (at) dlr.dehttps://orcid.org/0000-0002-2386-4341
Sordet, M.Observatoire de Geneve, Universite de Geneve, SwitzerlandUNSPECIFIED
Sousa, S. G.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIED
Steller, M.Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, AustriaUNSPECIFIED
Szabo, G. M.Konkoly Observatory, Budapest, HungaryUNSPECIFIED
Szoke, J.Admatis, HungaryUNSPECIFIED
Thomas, N.Physikalisches Institut, Universität Bern, SwitzerlandUNSPECIFIED
Tschentscher, Matthiasmatthias.tschentscher (at) dlr.deUNSPECIFIED
Udry, S.Observatoire de Geneve, Universite de Geneve, SwitzerlandUNSPECIFIED
Van Grootel, V.STAR, Université de Liège, BelgiumUNSPECIFIED
Viotto, V.INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Walter, IngoDLR, Institut für Optische SensorsystemeUNSPECIFIED
Walton, N. A.Institute of Astronomy, University of Cambridge, Cambridge, UKUNSPECIFIED
Wildi, F.University of Geneva, SwitzerlandUNSPECIFIED
Wolter, D.David.Wolter (at) dlr.deUNSPECIFIED
Date:2021
Journal or Publication Title:Experimental Astronomy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:51
DOI :10.1007/s10686-020-09679-4
Page Range:pp. 109-151
Publisher:Springer
ISSN:0922-6435
Status:Published
Keywords:Exoplanets, CHEOPS, small mission, high-precision transit photometry
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project CHEOPS, R - CHEOPS Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems
Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Planetary Research > Leitungsbereich PF
Institute of Planetary Research > Planetary Sensor Systems
Deposited By: Dombrowski, Ute
Deposited On:27 May 2021 10:00
Last Modified:14 Jul 2021 10:52

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