Statements (18)
Predicate | Object |
---|---|
gptkbp:instanceOf |
gptkb:standard
|
gptkbp:abbreviation |
ET
|
gptkbp:basedOn |
orbital motion of Earth
|
gptkbp:category |
Astronomy
Timekeeping |
gptkbp:definedIn |
mean solar second
|
https://www.w3.org/2000/01/rdf-schema#label |
Ephemeris Time
|
gptkbp:introduced |
gptkb:International_Astronomical_Union
|
gptkbp:introducedIn |
1952
|
gptkbp:relatedTo |
gptkb:Atomic_Time
Universal Time |
gptkbp:replacedBy |
gptkb:Terrestrial_Time
gptkb:Barycentric_Dynamical_Time |
gptkbp:usedBetween |
1952
1976 |
gptkbp:usedFor |
astronomical calculations
|
gptkbp:bfsParent |
gptkb:International_Atomic_Time_(TAI)
|
gptkbp:bfsLayer |
6
|