Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q4866001> ?p ?o }
Showing triples 1 to 36 of
36
with 100 triples per page.
- Q4866001 subject Q7036087.
- Q4866001 subject Q7476780.
- Q4866001 subject Q8482188.
- Q4866001 abstract "Barycentric Dynamical Time (TDB) is a relativistic coordinate time scale, intended for astronomical use as a time standard to take account of time dilation when calculating orbits and astronomical ephemerides of planets, asteroids, comets and interplanetary spacecraft in the Solar System. TDB is now (since 2006) defined as a linear scaling of Barycentric Coordinate Time (TCB), and a feature that distinguishes TDB from TCB is that TDB, when observed from the Earth's surface, has a difference from Terrestrial Time (TT) that is about as small as can be practically arranged with consistent definition: the differences are mainly periodic, and overall will remain at less than 2 milliseconds for several millennia.TDB applies to the Solar-System-barycentric reference frame, and was first defined in 1976 as a successor to the (non-relativistic) former standard of ephemeris time (adopted by the IAU in 1952 and superseded 1976). In 2006, after a history of multiple time-scale definitions and deprecation since the 1970s, a redefinition of TDB was approved by the IAU. The 2006 IAU redefinition of TDB as an international standard expressly acknowledged that the long-established JPL ephemeris time argument Teph, as implemented in JPL Development Ephemeris DE405, "is for practical purposes the same as TDB defined in this Resolution" (By 2006, ephemeris DE405 had already been in use for a few years as the official basis for planetary and lunar ephemerides in the Astronomical Almanac; it was the basis for editions for 2003 through 2014; in the edition for 2015 it is superseded by DE430).".
- Q4866001 wikiPageExternalLink Circular_179.pdf.
- Q4866001 wikiPageWikiLink Q119395.
- Q4866001 wikiPageWikiLink Q120200.
- Q4866001 wikiPageWikiLink Q14267.
- Q4866001 wikiPageWikiLink Q1636075.
- Q4866001 wikiPageWikiLink Q17092868.
- Q4866001 wikiPageWikiLink Q1815913.
- Q4866001 wikiPageWikiLink Q185918.
- Q4866001 wikiPageWikiLink Q189325.
- Q4866001 wikiPageWikiLink Q192854.
- Q4866001 wikiPageWikiLink Q227467.
- Q4866001 wikiPageWikiLink Q2460513.
- Q4866001 wikiPageWikiLink Q3559.
- Q4866001 wikiPageWikiLink Q3863.
- Q4866001 wikiPageWikiLink Q40218.
- Q4866001 wikiPageWikiLink Q4866000.
- Q4866001 wikiPageWikiLink Q5168010.
- Q4866001 wikiPageWikiLink Q544.
- Q4866001 wikiPageWikiLink Q6313217.
- Q4866001 wikiPageWikiLink Q634.
- Q4866001 wikiPageWikiLink Q6867.
- Q4866001 wikiPageWikiLink Q7036087.
- Q4866001 wikiPageWikiLink Q7476780.
- Q4866001 wikiPageWikiLink Q772096.
- Q4866001 wikiPageWikiLink Q809690.
- Q4866001 wikiPageWikiLink Q8482188.
- Q4866001 wikiPageWikiLink Q874572.
- Q4866001 wikiPageWikiLink Q908676.
- Q4866001 type Thing.
- Q4866001 comment "Barycentric Dynamical Time (TDB) is a relativistic coordinate time scale, intended for astronomical use as a time standard to take account of time dilation when calculating orbits and astronomical ephemerides of planets, asteroids, comets and interplanetary spacecraft in the Solar System.".
- Q4866001 label "Barycentric Dynamical Time".
- Q4866001 seeAlso Q908676.