Glossary
Space Trajectories. Interplanetary Missions

Repère galiléen ou inertiel; galilean or inertial frame

Benchmark in which Newton's second law is valid.

Ecliptic; ecliptic

Plane of the Earth's trajectory around the Sun.

Planetocentric (heliocentric) frame; planetocentric (heliocentric) frame

Marker linked to a planet (the Sun).

Keplerian; Keplerian

Relating to the motion obtained in the two-body problem.

Pericenter; perastre

Point closest to the attractor center on a Keplerian conic.

Anomalie à l'infini; infinite anomaly

Angle between the direction of the periastron and the asymptote of a hyperbolic orbit.

Vitesse à l'infini; infinite or excess...