Search Publications
Asteroids 2867 Steins and 21 Lutetia: surface composition from far infrared observations with the Spitzer space telescope
Jorda, L.; Lamy, P. L.; Barucci, M. A. +8 more
Aims:The aim of this paper is to investigate the surface composition of the two asteroids 21 Lutetia and 2867 Steins, targets of the Rosetta space mission.
Methods: We observed the two asteroids through their full rotational periods with the Infrared Spectrograph of the Spitzer Space Telescope to investigate the surface properties. The analysi…
Spitzer Space Telescope observations of the nucleus of comet 67P/Churyumov-Gerasimenko
Jorda, L.; Lamy, P. L.; Groussin, O. +3 more
Context: Comet 67P/Churyumov-Gerasimenko is the target of the Rosetta mission, and an early characterization of its nucleus is required to assist in preparing the orbital strategy of the spacecraft, the delivery of the Philae surface module and the science operations. We detected the nucleus using the Hubble Space Telescope in March 2003, but had …
Comet 67P/Churyumov-Gerasimenko at a large heliocentric distance
Tubiana, C.; Boehnhardt, H.; Drahus, M. +1 more
Aims: The Jupiter family comet 67P/Churyumov-Gerasimenko (67P/C-G) is the target comet of ESA's ROSETTA mission. A detailed portrait of this comet has been drawn from observations around perihelion, but what needs to be enhanced is the description of the comet's behaviour at large heliocentric distance. It is not only important for planning the re…
Asteroid 2867 Steins. II. Multi-telescope visible observations, shape reconstruction, and rotational state
Jorda, L.; Lamy, P. L.; Colas, F. +14 more
Context: Asteroid 2867 Steins is the first target of the Rosetta space mission with a flyby scheduled in September 2008.
Aims: An early physical characterization is needed to optimize the flyby parameters and the science operations, and to maximize the scientific return. The aim of this article is to characterize the shape and rotational state…
Asteroid 2867 Steins. III. Spitzer Space Telescope observations, size determination, and thermal properties
Jorda, L.; Lamy, P. L.; Barucci, M. A. +6 more
Context: Asteroid 2867 Steins is the first target of the Rosetta space mission with a flyby scheduled in September 2008.
Aims: An early characterization is needed to optimize the flyby parameters and the science operations, and to maximize the scientific return.
Methods: We used the infrared spectrograph (IRS) of the Spitzer Space Telescop…
Surface properties of Rosetta's targets (21) Lutetia and (2867) Steins from ESO observations
Barucci, M. A.; Fornasier, S.; Lowry, S. +3 more
Aims: The aim of this work is to constrain the size, composition and surface properties of asteroids (2867) Steins and (21) Lutetia, targets of the Rosetta mission. Rosetta is en route to rendezvous with comet 67P/Churyumov-Gerasimenko.
Methods: Thermal-Infrared N-band observations for Lutetia and Steins were obtained using, respectively, TIMM…
Asteroid 2867 Steins. I. Photometric properties from OSIRIS/Rosetta and ground-based visible observations
Jorda, L.; Lamy, P. L.; Barucci, M. A. +6 more
Context: Asteroid 2867 Steins is the first target of the Rosetta space mission with a flyby scheduled in September 2008.
Aims: An early characterization is needed to optimize the flyby parameters and the science operations and to maximize the scientific return. The aim of this article is to characterize the photometric properties of this aster…
On the Doppler navigation of a small body orbiter: Rosetta
Mysen, E.; Aksnes, K.
In 2014 the ESA probe Rosetta is to rendezvous with short-period comet 67P/Churyumov-Gerasimenko, where it will be inserted into a stable bound orbit. Partly by measuring the Doppler displacements of the probe's radio carrier waves, the gravity field of the comet's nucleus will be found. In this work, navigation strategies are developed, and impor…