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- Terrestrial_Time abstract "Terrestrial Time (TT) is a modern astronomical time standard defined by the International Astronomical Union, primarily for time-measurements of astronomical observations made from the surface of Earth.For example, the Astronomical Almanac uses TT for its tables of positions (ephemerides) of the Sun, Moon and planets as seen from Earth. In this role, TT continues Terrestrial Dynamical Time (TDT), which in turn succeeded ephemeris time (ET). TT shares the original purpose for which ET was designed, to be free of the irregularities in the rotation of Earth.The unit of TT is the SI second, the definition of which is currently based on the caesium atomic clock, but TT is not itself defined by atomic clocks. It is a theoretical ideal, which real clocks can only approximate.TT is distinct from the time scale often used as a basis for civil purposes, Coordinated Universal Time (UTC). TT indirectly underlies UTC, via International Atomic Time (TAI). Each leap second that is introduced into UTC causes UTC to diverge a little further from TT.".
- Terrestrial_Time wikiPageExternalLink tai.
- Terrestrial_Time wikiPageExternalLink glossary.htm.
- Terrestrial_Time wikiPageExternalLink MainDisp.csl?pid=98-134.
- Terrestrial_Time wikiPageID "31016".
- Terrestrial_Time wikiPageLength "13189".
- Terrestrial_Time wikiPageOutDegree "56".
- Terrestrial_Time wikiPageRevisionID "672622045".
- Terrestrial_Time wikiPageWikiLink Astronomical_Almanac.
- Terrestrial_Time wikiPageWikiLink Astronomy.
- Terrestrial_Time wikiPageWikiLink Atomic_clock.
- Terrestrial_Time wikiPageWikiLink BIPM.
- Terrestrial_Time wikiPageWikiLink Barycentric_Coordinate_Time.
- Terrestrial_Time wikiPageWikiLink Barycentric_Dynamical_Time.
- Terrestrial_Time wikiPageWikiLink Category:Time_scales.
- Terrestrial_Time wikiPageWikiLink Coordinate_time.
- Terrestrial_Time wikiPageWikiLink Coordinate_time_scale.
- Terrestrial_Time wikiPageWikiLink Coordinated_Universal_Time.
- Terrestrial_Time wikiPageWikiLink Dynamical_time_scale.
- Terrestrial_Time wikiPageWikiLink Ephemerides.
- Terrestrial_Time wikiPageWikiLink Ephemeris.
- Terrestrial_Time wikiPageWikiLink Ephemeris_Time.
- Terrestrial_Time wikiPageWikiLink Ephemeris_time.
- Terrestrial_Time wikiPageWikiLink Epoch_(reference_date).
- Terrestrial_Time wikiPageWikiLink GPS_time.
- Terrestrial_Time wikiPageWikiLink Geocentric_Coordinate_Time.
- Terrestrial_Time wikiPageWikiLink Geoid.
- Terrestrial_Time wikiPageWikiLink Global_Positioning_System.
- Terrestrial_Time wikiPageWikiLink Gravitational_potential.
- Terrestrial_Time wikiPageWikiLink Gravitational_time_dilation.
- Terrestrial_Time wikiPageWikiLink Gregorian_calendar.
- Terrestrial_Time wikiPageWikiLink IAU.
- Terrestrial_Time wikiPageWikiLink International_Astronomical_Union.
- Terrestrial_Time wikiPageWikiLink International_Atomic_Time.
- Terrestrial_Time wikiPageWikiLink International_Bureau_of_Weights_and_Measures.
- Terrestrial_Time wikiPageWikiLink International_System_of_Units.
- Terrestrial_Time wikiPageWikiLink Julian_Date.
- Terrestrial_Time wikiPageWikiLink Julian_day.
- Terrestrial_Time wikiPageWikiLink Leap_second.
- Terrestrial_Time wikiPageWikiLink Mean_sea_level.
- Terrestrial_Time wikiPageWikiLink Physical_geodesy.
- Terrestrial_Time wikiPageWikiLink Proper_time.
- Terrestrial_Time wikiPageWikiLink Pulsar.
- Terrestrial_Time wikiPageWikiLink Radio.
- Terrestrial_Time wikiPageWikiLink Rotation-powered_pulsar.
- Terrestrial_Time wikiPageWikiLink SI.
- Terrestrial_Time wikiPageWikiLink Sea_level.
- Terrestrial_Time wikiPageWikiLink Second.
- Terrestrial_Time wikiPageWikiLink Terrestrial_Dynamical_Time.
- Terrestrial_Time wikiPageWikiLink Terrestrial_Time.
- Terrestrial_Time wikiPageWikiLink Theory_of_relativity.
- Terrestrial_Time wikiPageWikiLink Time_standard.
- Terrestrial_Time wikiPageWikiLink UT1.
- Terrestrial_Time wikiPageWikiLink UTC.
- Terrestrial_Time wikiPageWikiLink Universal_Time.
- Terrestrial_Time wikiPageWikiLink ΔT.
- Terrestrial_Time wikiPageWikiLinkText "TT second".
- Terrestrial_Time wikiPageWikiLinkText "TT".
- Terrestrial_Time wikiPageWikiLinkText "Terrestrial Dynamic Time".
- Terrestrial_Time wikiPageWikiLinkText "Terrestrial Dynamical Time (TDT)".
- Terrestrial_Time wikiPageWikiLinkText "Terrestrial Time (TT)".
- Terrestrial_Time wikiPageWikiLinkText "Terrestrial Time".
- Terrestrial_Time hasPhotoCollection Terrestrial_Time.
- Terrestrial_Time wikiPageUsesTemplate Template:As_of.
- Terrestrial_Time wikiPageUsesTemplate Template:Gaps.
- Terrestrial_Time wikiPageUsesTemplate Template:Reflist.
- Terrestrial_Time wikiPageUsesTemplate Template:Time_measurement_and_standards.
- Terrestrial_Time wikiPageUsesTemplate Template:Use_dmy_dates.
- Terrestrial_Time wikiPageUsesTemplate Template:Val.
- Terrestrial_Time subject Category:Time_scales.
- Terrestrial_Time type Article.
- Terrestrial_Time type Article.
- Terrestrial_Time comment "Terrestrial Time (TT) is a modern astronomical time standard defined by the International Astronomical Union, primarily for time-measurements of astronomical observations made from the surface of Earth.For example, the Astronomical Almanac uses TT for its tables of positions (ephemerides) of the Sun, Moon and planets as seen from Earth. In this role, TT continues Terrestrial Dynamical Time (TDT), which in turn succeeded ephemeris time (ET).".
- Terrestrial_Time label "Terrestrial Time".
- Terrestrial_Time sameAs Зямны_час.
- Terrestrial_Time sameAs Temps_Terrestre.
- Terrestrial_Time sameAs Terestrický_čas.
- Terrestrial_Time sameAs Temps_terrestre.
- Terrestrial_Time sameAs Tempo_Terrestre.
- Terrestrial_Time sameAs Waktu_Bumi.
- Terrestrial_Time sameAs m.07mkt.
- Terrestrial_Time sameAs Земное_время.
- Terrestrial_Time sameAs Zemeljski_čas.
- Terrestrial_Time sameAs Terrest_tid.
- Terrestrial_Time sameAs Q2460513.
- Terrestrial_Time sameAs Q2460513.
- Terrestrial_Time sameAs 地球時.
- Terrestrial_Time wasDerivedFrom Terrestrial_Time?oldid=672622045.
- Terrestrial_Time isPrimaryTopicOf Terrestrial_Time.