ICRF

E855202
astronomical reference system celestial reference frame realization of the International Celestial Reference Frame

ICRF is the International Celestial Reference Frame, a highly precise, radio-source-based coordinate system used as the fundamental reference for positions in the sky in modern astronomy and astrometry.

Jump to: Surface forms Statements Referenced by

Observed surface forms (4)

Surface form Occurrences
International Celestial Reference Frame 0
ICRF1 1
ICRF2 1

Statements (48)

Predicate Object
instanceOf astronomical reference system ⓘ
celestial reference frame ⓘ
realization of the International Celestial Reference Frame ⓘ
realization of the International Celestial Reference Frame ⓘ
realization of the International Celestial Reference Frame ⓘ
abbreviation ICRF NERFINISHED ⓘ
acronym ICRS realization ⓘ
VLBI NERFINISHED ⓘ
adoptedAs fundamental celestial reference frame ⓘ
adoptedBy International Astronomical Union NERFINISHED ⓘ
International Astronomical Union NERFINISHED ⓘ
International Astronomical Union NERFINISHED ⓘ
International Astronomical Union NERFINISHED ⓘ
adoptionYear 1997 ⓘ
2009 ⓘ
2018 ⓘ
axesDefinition fixed with respect to distant extragalactic sources ⓘ
basedOn extragalactic radio sources ⓘ
quasars ⓘ
center solar system barycenter ⓘ
coordinateAxes declination ⓘ
right ascension ⓘ
coordinateRealization radio wavelengths ⓘ
coordinateSystemType equatorial coordinate system ⓘ
definedBy International Astronomical Union NERFINISHED ⓘ
defines directions of the ICRS axes ⓘ
definingSourcesType compact extragalactic radio sources ⓘ
frameType barycentric ⓘ
fullName International Celestial Reference Frame NERFINISHED ⓘ
linkedTo International Terrestrial Reference Frame NERFINISHED ⓘ
maintainedBy International Earth Rotation and Reference Systems Service NERFINISHED ⓘ
orientationAccuracy microarcsecond level ⓘ
realizedUsing very long baseline interferometry ⓘ
referenceEpoch J2000.0 ⓘ
referenceFor Gaia Celestial Reference Frame NERFINISHED ⓘ
referencePlane celestial equator ⓘ
relatedStandard International Celestial Reference System NERFINISHED ⓘ
replaces FK5 NERFINISHED ⓘ
Fifth Fundamental Catalogue NERFINISHED ⓘ
successorOf optical star-based reference frames ⓘ
usedBy optical astrometry ⓘ
radio astronomy ⓘ
spacecraft navigation ⓘ
usedFor astrometry ⓘ
modern astronomy ⓘ
version ICRF1 NERFINISHED ⓘ
ICRF2 NERFINISHED ⓘ
ICRF3 NERFINISHED ⓘ

Referenced by (5)

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

IERS ICRS Centre → maintains → ICRF ⓘ
International Celestial Reference System → realization → ICRF ⓘ
International Celestial Reference System → realization → ICRF ⓘ
this entity surface form: ICRF1
International Celestial Reference System → realization → ICRF ⓘ
this entity surface form: ICRF2
International Celestial Reference System → realization → ICRF ⓘ
this entity surface form: ICRF3