aphelion Definition

perihelion, celestial equator, perigee, ecliptic, celestial sphere, equinox, perilune, equator, sidereal, proxima centauri, uranus, synchronous orbit, vernal equinox, planetoid, jupiter, asteroid belt, umbral, heliopause, capricornus, autumnal equinox, oort cloud, orbital velocity, equinoxes, orbits, apolune, mesosphere, spring equinox, galactic equator, sextile, syrtis major, steeve, photosphere, annularity, annular eclipse, apastron, zodiacal light, prograde, geosynchronous orbit, phaethon, moonset, triangulum, perseids, corot, solstices, moonlet, summer solstice, milky way galaxy, geostationary orbit, moonrise, arcsecond, lagrangian, apocynthion, benjamin franklin bridge, exosphere, conjunct, occultation, airglow, saturnian, magnetopause, epsilon aurigae, redshift, andromeda galaxy, troposphere, eridanus, beta centauri, partial eclipse, puppis, heliosphere, winter solstice, cepheus, asterism, geosynchronous, tropopause, hubble constant, morning watch, comet, pleiades, attic salt, betelgeuse, iapetus, interstellar space, gravitational interaction, earthshine, prime meridian, tishri, omega centauri, seedtime, jovian, parsec, trine, planets, flyby, ushant, magnetosphere, exoplanet, mimas, midheaven, ophiuchus, lutetia, sunspot,