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TBD (also referred to unofficially as TBD TV; branded on-air as TBD.) is an American digital multicast television network owned by the Sinclair Television Group subsidiary of the Sinclair Broadcast Group and operated by Jukin Media.
Barycentric Dynamical Time (TDB, from the French Temps Dynamique Barycentrique) is a relativistic coordinate time scale, intended for astronomical use as a time standard to take account of time dilation [1] when calculating orbits and astronomical ephemerides of planets, asteroids, comets and interplanetary spacecraft in the Solar System.
TDB may refer to: Barycentric Dynamical Time (Temps Dynamique Barycentrique), a time standard; The Daily Beast, a news site; The Daily Buzz; The Division Bell, a Pink ...
TDB – (astrophysics terminology) Barycentric Dynamical Time; TDRSS – (communications network) Tracking and Data Relay Satellite System, an array of satellites used by NASA to communicate with many spacecraft in low Earth orbit; TES – (instrumentation) Thermal Emission Spectrometer, a spectrometer on the Mars Observer
TBD (TV network), an American broadcast television network for millennials TBD TV (now WJLA 24/7 News), a local cable news channel for Washington, D.C.; TBD Records, an American record label
For the calculation of ephemerides, Barycentric Dynamical Time (TDB) was officially recommended to replace ET. TDB is similar to TDT but includes relativistic corrections that move the origin to the barycenter, hence it is a dynamical time at the barycenter. [29] TDB differs from TT only in periodic terms. The difference is at most 2 milliseconds.
The Eastern and Southern African Trade and Development Bank, also known as TDB, was established on 6 November 1985 under Chapter Nine of the Treaty for the Establishment of the Preferential Trade Area for Eastern and Southern African States, which entered into effect on 2 September 1982 and was subsequently replaced by the Treaty for the Establishment of the Common Market for Eastern and ...
"TBA" (meaning "to be announced") is also used to describe a specific type of simple mortgage investment, the forward mortgage-backed security. This is used to indicate that the investor is acquiring some portion of a pending pool of as-yet unspecified mortgages, which will be specified at a given delivery date. [ 8 ]