• Barycentric Dynamical Time (TDB, from the French Temps Dynamique Barycentrique) is a relativistic coordinate time scale, intended for astronomical use...
    12 KB (1,601 words) - 09:08, 30 May 2025
  • replacements for the problematic 1976 definition of Barycentric Dynamical Time (TDB). Unlike former astronomical time scales, TCB is defined in the context of the...
    6 KB (963 words) - 09:53, 17 January 2025
  • later named Terrestrial Dynamical Time (TDT). It was the counterpart to Barycentric Dynamical Time (TDB), which was a time standard for Solar system ephemerides...
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  • (see Barycenter) Barycentric Coordinate Time, a coordinate time standard in the Solar System Barycentric Dynamical Time, a former time standard in the...
    816 bytes (136 words) - 09:59, 26 March 2025
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    assigned in 1979, emphasized their dynamical nature or origin, Barycentric Dynamical Time (TDB) and Terrestrial Dynamical Time (TDT). Both were defined for...
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    applying to Earth's center and TCB to the solar system's barycenter. Barycentric Dynamical Time is an older relativistic scale related to TCB that is still in...
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  • timescales intended to constitute dynamical timescales: Terrestrial Dynamical Time (TDT) and Barycentric Dynamical Time (TDB). Difficulties were recognized...
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  • Ephemeris Time to TDT. TDT has since been redefined as Terrestrial Time (TT). For the calculation of ephemerides, Barycentric Dynamical Time (TDB) was...
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    greatly affected by where Jupiter is on its 11.8 year orbit. Barycentric Dynamical Time Centers of gravity in non-uniform fields Center of mass Lagrange...
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  • terminology) Geocentric Coordinate Time TDB – (astrophysics terminology) Barycentric Dynamical Time TDRSS – (communications network) Tracking and Data Relay Satellite...
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  • for the difference in time scales.) Adapting the large body of existing software to change from TDB (Barycentric Dynamical Time) to TCG is a formidable...
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  • Atomic Time closely, but occasionally step (or "leap") in order to prevent them from drifting too far from mean solar time.[citation needed] Barycentric Dynamical...
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  • TDB may refer to: Barycentric Dynamical Time (Temps Dynamique Barycentrique), a time standard The Daily Beast, a news site The Daily Buzz The Division...
    569 bytes (102 words) - 17:16, 1 September 2023
  • TCB has been defined, called for historical reasons Barycentric Dynamical Time (TDB), with a time unit that evaluates to SI seconds when observed from...
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    assigned in 1979, emphasized their dynamical nature or origin, Barycentric Dynamical Time (TDB) and Terrestrial Dynamical Time (TDT). Both were defined for...
    33 KB (3,883 words) - 08:26, 13 June 2025
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    sandglass, sand timer, or sand clock) is a device used to measure the passage of time. It comprises two glass bulbs connected vertically by a narrow neck that...
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    of the ephemeris positions with time measurements expressed in Barycentric Dynamical Time (TDB) leads to a value for the speed of light in astronomical...
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  • on the frame of reference used. Values quoted in barycentric dynamical time (TDB) or equivalent time scales such as the Teph of the Jet Propulsion Laboratory...
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  • Thumbnail for History of timekeeping devices
    Devices and methods for keeping time have gradually improved through a series of new inventions, starting with measuring time by continuous processes, such...
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  • producing time dilation. Practical examples include the International Atomic Time standard and its relationship with the Barycentric Coordinate Time standard...
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    uncertainty of 1 h 27 min. Barycentric Dynamical Time (TDB) is approximately 69 seconds ahead of Coordinated Universal Time. ESA also lists a 3-sigma uncertainty...
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  • epoch for Barycentric Coordinate Time (TCB), Geocentric Coordinate Time (TCG), and Terrestrial Time (TT), which represent three fundamental time scales in...
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    International Date Line (category Time)
    importance of the IDL.[citation needed] Earliest time on Earth here means that calendar day and clock time in this time zone is least advanced (or the "oldest ")...
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  • Thumbnail for List of Solar System objects by greatest aphelion
    Astronomy Barycentric solution for 2004 R2 Barycentric solution for 2015 O1 Barycentric solution for 2012 S4 Horizons output. "Barycentric Osculating...
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    Horizons: Barycentric Osculating Orbital Elements for (90377) Sedna". Retrieved 12 November 2018. 2014 FE72 at AstDyS-2, Asteroids—Dynamic Site Ephemeris ·...
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  • could intersect a ray with an edge sharing triangle pair and return barycentric coordinates and other hit information. Fixed-function bounding volume...
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  • problems with the potential planetary detection: for example an erroneous barycentric correction had been applied (the same error had also led to claims of...
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  • bodies, tabulated at equally spaced intervals of time, covering a specified span of years. Barycentric rectangular coordinates of the Sun, eight major...
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    doi:10.1111/j.1365-2966.2004.08240.x. S2CID 16002759. Horizons output. "Barycentric Osculating Orbital Elements for Comet C/1999 F1 (Catalina)". Archived...
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  • Thumbnail for (668643) 2012 DR30
    FE72 has a larger heliocentric semi-major axis.) 2012 DR30 does have a barycentric semi-major axis of 1032 AU. For the epoch of July 2018 2012 DR30 will...
    16 KB (818 words) - 05:22, 7 February 2025