scispace - formally typeset
J

J. Souchay

Researcher at PSL Research University

Publications -  18
Citations -  5495

J. Souchay is an academic researcher from PSL Research University. The author has contributed to research in topics: Asteroid & Close encounter. The author has an hindex of 6, co-authored 18 publications receiving 4286 citations. Previous affiliations of J. Souchay include Centre national de la recherche scientifique.

Papers
More filters
Journal ArticleDOI

The Gaia mission

T. Prusti, +624 more
TL;DR: Gaia as discussed by the authors is a cornerstone mission in the science programme of the European Space Agency (ESA). The spacecraft construction was approved in 2006, following a study in which the original interferometric concept was changed to a direct-imaging approach.
Journal ArticleDOI

Gaia Data Release 1. Testing parallaxes with local Cepheids and RR Lyrae stars

G. Clementini, +637 more
TL;DR: In this article, the first parallax measurements of the primary standard candles of the cosmological distance ladder, that involve astrometry collected by Gaia during the initial 14 months of science operation, are published in Gaia Data Release 1 (DR1) as part of the Tycho-Gaia Astrometric Solution (TGAS).
Journal ArticleDOI

The dynamical environment of asteroid 21 Lutetia according to different internal models

TL;DR: In this paper, the dynamical effects induced by three different internal structures (uniform, three-and four-layers) of asteroid (21) Lutetia, an object that recent results from space probe suggest being at least partially differentiated.
Journal ArticleDOI

Changes of spin axis and rate of the asteroid (99942) Apophis during the 2029 close encounter with Earth: A constrained model

TL;DR: In this paper, the effects of the triaxial form of the asteroid on the motion of its axis of rotation in space, as well as the modifications of the spin rate due to tidal deformation were investigated.