A

David

Darling

CELESTIAL MECHANICS

  • altitude
  • analemma
  • annual variation
  • antinode
  • apex
  • aphelion
  • apoapsis
  • apogee
  • apparition
  • apsis
  • argument of perihelion
  • ascending node
  • aspect

  • barycenter
  • Barycentric Dynamical Time
  • Besselian elements
  • Besselian year
  • big LEO
  • braking ellipses

  • celestial coordinates
  • celestial equator
  • celestial mechanics
  • celestial pole
  • celestial sphere
  • central meridian
  • chaotic control
  • circular orbit
  • circular velocity
  • Clarke Belt
  • colure
  • conic sections
  • conjunction
  • contact
  • convergent point
  • co-orbital
  • Coriolis effect
  • co-rotation
  • culmination

  • day
  • decaying orbit
  • declination
  • deep space
  • descending node
  • direct ascent
  • direct motion
  • dynamical time

  • Earth-orbit rendezvous
  • eccentric orbit
  • eccentricity
  • ecliptic
  • ecliptic coordinates
  • ellipse
  • elongation
  • ephemeris
  • epoch
  • equation of light
  • equator
  • equatorial coordinates
  • equatorial orbit
  • equinox
  • escape velocity
  • extragalactic reference frame

  • focus (orbital)
  • following

  • geostationary orbit (GSO)
  • geosynchronous orbit
  • geosynchronous/geostationary transfer orbit (GTO)
  • GMT (Greenwich Mean Time)
  • graveyard orbit
  • gravity assist
  • gravity gradient
  • greatest elongation

  • halo orbit
  • helical rising
  • heliocentric
  • heliocentric coordinates
  • Hohmann orbit
  • horizon
  • horizon coordinates
  • hour
  • hour angle
  • hyperbola
  • hyperbolic orbit
  • hyperbolic velocity

  • inclination
  • inequality
  • International Celestial Reference Frame (ICRF)

  • Julian date (JD)
  • Julian epoch

  • Keplerian orbit
  • Keplerian rotation curve
  • Kepler's equation
  • Kepler's laws of planetary motion

  • Lagrangian point
  • latitude variation
  • LEO (low Earth orbit)
  • libration
  • limb correction
  • line of nodes
  • Lissajous orbit
  • local horizon
  • local standard of rest
  • longitude at the epoch
  • longitude of the ascending node
  • longitude of perihelion
  • lower transit
  • lunar-orbit rendezvous
  • Lyapunov orbit

  • mean motion
  • mean motion resonance
  • mean place
  • MEO (medium Earth orbit)
  • meridian
  • Metonic cycle
  • Molniya-type orbit
  • month

  • nadir
  • neutral point
  • New Style date
  • node
  • noon
  • North Pole
  • nutation

  • obliquity
  • opposition
  • orbit
  • orbit decay
  • orbital element
  • orbital migration
  • orbital period
  • orbital resonance
  • orbital velocity

  • parabola
  • parabolic orbit
  • parabolic velocity
  • parallactic displacement
  • parking orbit
  • periapsis
  • perigee
  • perihelion
  • perturbation
  • planetocentric and planetographic coordinates
  • polar distance
  • polar orbit
  • pole
  • position angle
  • preceding
  • precession
  • prime meridian
  • proper motion

  • quasistationary orbit

  • radius vector
  • rectangular coordinates
  • regression of nodes
  • retrograde
  • revolution
  • right ascension

  • Saros
  • seasons
  • secular
  • secular acceleration
  • secular parallax
  • semi-major axis
  • sidereal time
  • solar apex
  • Sothic cycle
  • spherical astronomy
  • spherical coordinates
  • stationary point
  • statistical parallax
  • suborbital
  • subsolar point
  • sun-syncronous orbit
  • synchronous rotation
  • synodic
  • synodic period
  • syzygy

  • topocentric coordinates
  • trailing hemisphere
  • trajectory
  • transfer ellipse
  • translunar
  • tropic
  • Tropic of Cancer
  • Tropic of Capricorn
  • True of Date (TOD)
  • true pole
  • two-body problem

  • upper transit
  • UT (Universal Time)

  • vertical circle
  • VHO (very high orbit)

  • walking orbit

  • zenith
  • zodiac