The concepts of International Atomic Time (TAI) and Terrestrial Dynamic Time (TDT)

Details The concepts of International Atomic Time (TAI) and Terrestrial Dynamic Time (TDT) The concepts of International Atomic Time (TAI) and Terrestrial Dynamic Time (TDT)

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...220..329h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 220, no. 1-2, Aug. 1989, p. 329-334. Research supported by the National Natura

Astronomy and Astrophysics

Astrophysics

4

Atomic Clocks, Ephemerides, Relativity, Earth Rotation, Solar Orbits, Synchronism

Scientific paper

The concepts of International Atomic Time (TAI) and Terrestrial Dynamical Time (TDT) are discussed. Because of the earth's rotation and the orbital motion of the planets, TAI must be constructed using the coordinate system-dependent coordinate synchronism but not the Einstein synchronism. For present precision requirements, the definition of TAI by the international committees CCDS and CCIR is precise enough. It is suggested the TDT be defined as the proper time of a clock at geocenter in a fictitious spacetime where the earth's gravity is nonexistent. TDT should also be used for the apparent ephemerides of celestial bodies which move only around the sun.

Affiliated with

Also associated with

No associations

Rating

The concepts of International Atomic Time (TAI) and Terrestrial Dynamic Time (TDT) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The concepts of International Atomic Time (TAI) and Terrestrial Dynamic Time (TDT), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The concepts of International Atomic Time (TAI) and Terrestrial Dynamic Time (TDT) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1513771