year
solar year
sidereal year
orbit period
day
sidereal day
galactic year
sun
sun-synchronous orbit
apex
solar apex
apex of the sun's way
starburst
catasterize
minor planet
periastron
periodic
round-trip light time
heliosynchronous
RTLT
catasterismus
orb
geosynchronous
circumbinary
sidereal month
diurnal motion
short-period
tropical year
Sol
revolve
synchronous rotation
Nemesis
rotational period
planet
ephemeris time
heliacal
terrestrial time
antitail
terrestrial dynamical time
TT
capture
heliac
TDT
asteroid
near-Earth object
non-periodic
planetary object
Oort cloud
parabolic comet
evection
presolar
Sun
perihelion
ploonet
fixed star
circle
gyrochronology
direct
Proxima Centauri
inferior planet
periodic comet
new moon
Lich
exozodiacal
orbit
satellite planet
inferior
osculating orbit
astronomical year
point of periapsis
slingshot effect
multiple star
geoheliocentrism
periapsis
lunar orbit
photoeccentric
starset
starspot
proper motion
solar system
superior planet
Kepler's first law
anteorbital
near-rectilinear halo orbit
launch window
short-period comet
apogalacticon
quadruple star
radial velocity