Earth–Moon barycenter

E821684

The Earth–Moon barycenter is the common center of mass around which both Earth and the Moon orbit in their mutual gravitational interaction.

All labels observed (1)

Label Occurrences
Earth–Moon barycenter canonical 2

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf astronomical concept ⓘ
barycenter ⓘ
center of mass ⓘ
affects Earth orientation modeling ⓘ
lunar orbit modeling ⓘ
averageEarthMoonDistance_km about 384400 ⓘ
category Astrodynamics ⓘ
linked to: Celestial Mechanics

Celestial mechanics ⓘ
Orbital mechanics ⓘ
coordinateSystemOriginFor some Earth–Moon dynamical models ⓘ
definedBy mutual gravitational interaction of Earth and Moon ⓘ
definedInFrame Newtonian mechanics ⓘ
general relativity approximations ⓘ
distanceFromEarthCenter_fractionOfRadius about 0.73 ⓘ
distanceFromEarthCenter_km about 4670 ⓘ
distanceFromEarthSurface_km about 1700 ⓘ
distanceFromMoonCenter_fractionOfDistance about 0.90 of average Earth–Moon distance ⓘ
distanceFromMoonCenter_km about 379000 ⓘ
governedBy Newton’s law of gravitation ⓘ
conservation of momentum ⓘ
gravitationallyBoundSystem Earth–Moon ⓘ
linked to: Earth–Moon system
hasProperty moves slightly due to perturbations from Sun and planets ⓘ
not fixed within Earth due to varying Earth–Moon distance ⓘ
hasSymbolicRepresentation often denoted as Earth–Moon CM or EM barycenter ⓘ
isReferencePointFor barycentric dynamical time definitions (conceptually) ⓘ
describing Earth and Moon orbits around each other ⓘ
liesCloserTo Earth ⓘ
liesOnLineBetween Earth center ⓘ
Moon center ⓘ
locatedInside Earth ⓘ
massRatioEarthToMoon about 81.3 to 1 ⓘ
orbits solar system barycenter ⓘ
orbitsWith Earth ⓘ
Moon ⓘ
orbitsWithPeriod about 27.3 days relative to stars ⓘ
about 29.5 days relative to Sun ⓘ
partOf Earth–Moon system ⓘ
relatedTo center of mass ⓘ
solar system barycenter ⓘ
relevantFor Earth–Moon evolution models ⓘ
tidal interaction studies ⓘ
usedIn celestial mechanics ⓘ
ephemeris calculations ⓘ
orbital dynamics ⓘ
solar system barycentric coordinates ⓘ
spacecraft navigation ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Earth–Moon system → hasBarycenter → Earth–Moon barycenter ⓘ
SSB → distinctFrom → Earth–Moon barycenter ⓘ