Barycentric Celestial Reference System
E855203
The Barycentric Celestial Reference System is a relativistic, solar-system–centered coordinate framework used in astronomy and astrometry to precisely describe the positions and motions of celestial bodies with respect to the solar system’s center of mass.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical coordinate system
ⓘ
celestial reference system ⓘ relativistic reference system ⓘ |
| abbreviation | BCRS NERFINISHED ⓘ |
| application |
analysis of VLBI observations
ⓘ
construction of planetary and lunar ephemerides ⓘ |
| appliesToRegion | solar system vicinity ⓘ |
| basedOnTheory | general relativity ⓘ |
| coordinateCenter | solar system barycenter NERFINISHED ⓘ |
| coordinateOrigin | center of mass of all solar system bodies ⓘ |
| coordinateSymbol | (t, x, y, z) ⓘ |
| definedBy | International Astronomical Union NERFINISHED ⓘ |
| definedIn | IAU 1991 resolutions NERFINISHED ⓘ |
| distinguishedFrom |
heliocentric reference system
ⓘ
topocentric reference system ⓘ |
| documentedIn |
IAU 2000 Resolution B1.3
NERFINISHED
ⓘ
IAU 2000 Resolution B1.5 NERFINISHED ⓘ IAU 2006 Resolution B2 NERFINISHED ⓘ |
| epochDefinition | kinematically non-rotating with respect to distant extragalactic objects ⓘ |
| governingBody | IAU Division A NERFINISHED ⓘ |
| includesEffects |
Shapiro time delay
GENERATED
ⓘ
aberration of light GENERATED ⓘ gravitational time dilation GENERATED ⓘ relativistic light deflection GENERATED ⓘ |
| mathematicalFramework | post-Newtonian approximation of general relativity ⓘ |
| neglects | external gravitational fields beyond the solar system at leading order ⓘ |
| orientation | aligned with ICRS axes ⓘ |
| precisionGoal | microarcsecond astrometry ⓘ |
| primaryUse |
modeling light propagation in the solar system
ⓘ
modeling motion of solar system bodies ⓘ |
| referenceFrameType | barycentric ⓘ |
| referenceToRealization | International Celestial Reference System NERFINISHED ⓘ |
| referenceToRealizationAbbreviation | ICRS NERFINISHED ⓘ |
| refinedIn |
IAU 2000 resolutions
NERFINISHED
ⓘ
IAU 2006 resolutions NERFINISHED ⓘ |
| relatedSystem | Geocentric Celestial Reference System NERFINISHED ⓘ |
| relatedSystemAbbreviation | GCRS GENERATED ⓘ |
| spatialCoordinatesType | quasi-Cartesian coordinates ⓘ |
| spatialMetric | post-Newtonian metric ⓘ |
| timeCoordinate | Barycentric Coordinate Time NERFINISHED ⓘ |
| timeCoordinateAbbreviation | TCB NERFINISHED ⓘ |
| timeSymbol | t = TCB ⓘ |
| transformationDefinedWith | GCRS NERFINISHED ⓘ |
| usedIn |
astrometry
ⓘ
celestial mechanics ⓘ ephemeris computation ⓘ high-precision timing ⓘ pulsar timing ⓘ spacecraft navigation ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.