| Global networks of tracking stations produce the observations that make generation of the precise ephemerides possible. |
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| Usually used by the sailors to take stock at sea, these ephemerides are compulsory for navigation of the high seas. |
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| Typical value, with almanac and recent ephemerides saved and approximate position and time entered. |
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| Besides its missions of ephemerides computation, an intense research activity was developed in the dynamical and celestial mechanic fields. |
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| The data related to the ephemerides are official data of the Ministère de l'Éducation Nationale. |
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| In 1802 the Service of Calculations was founded and was in charge of the ephemerides computation. |
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| The activities of the GAP team are also related to the official ephemerides work of IMCCE and to teaching and training. |
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| Typical value, with no almanac or ephemerides, and no approximate position or time. |
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| The timescale used for apparent geocentric ephemerides whose unit of time is the SI second. |
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| The IMCCE, named Service des calculs et de mécanique céleste du Bureau des longitudes until 1998, is in charge to build and publish ephemerides. |
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| Moreover, procedures for the use of multichannel GLONASS P-code and GLONASS precise ephemerides have been established. |
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| Modern ephemerides are often computed electronically from mathematical models of the motion of astronomical objects and the Earth. |
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| Researchers of the GAP team wish to concretize some their research in the making of ephemerides available for the astronomical community, the public and the space agencies. |
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| Baseline data processing is performed using the CGPS22 software utilizing precise satellite ephemerides, earth rotation parameters and ionospheric and tropospheric modelling. |
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| There were also commentarii diurni, a journal of daily events at the emperor's court, which later became a system of records known as ephemerides. |
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| The objective of this project is, among others, to produce postprocessed precise GLONASS satellite ephemerides as has been done for several years for GPS satellites. |
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| Nevertheless, there are secular phenomena which cannot adequately be considered by ephemerides. |
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| Radio follow-up and ephemerides production are essential. |
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| Solar system ephemerides are essential for the navigation of spacecraft and for all kinds of space observations of the planets, their natural satellites, stars, and galaxies. |
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| Ephemerides of the planet Saturn also sometimes contain the apparent inclination of its ring. |
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| For celestial navigation the Portuguese used the Ephemerides, which experienced a remarkable diffusion in the 15th century. |
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| Wee heard the King was solacing at the Caspian Sea, whither now wee are travelling. Till then let us keepe an Ephemerides or day-journey. |
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