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  • noun

Words related to ephemeris

an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year

References in periodicals archive ?
Furthermore, the pseudo-range must consider various errors, such as the satellite ephemeris error, clock error, and tropospheric error.
http://ssd.jpl.nasa.gov--The 'Horizons' ephemeris service provides access to key solar system data
Additionally, as the switch from IBb08/igs08.atx to IGS14/igs14.atx took place on January 29, 2017, an attempt to estimate the influence of mentioned in Introduction "ephemeris and clocks systematic error", on analyzed position component differences can be made.
According to the time and coordinates system standard for the Chinese Mars exploration mission, DE421 ephemeris, which was released in 2008, will be adopted in this mission.
To create a more stable unit of time interval, the second was redefined in 1956 as 1/31 556 925.9747 of the tropical year 1900, a time interval known as the ephemeris second.
Precise point positioning (PPP) accuracy is evaluated by applying the predicted RTS corrections to the GPS broadcast ephemeris.
In antiquity nobody doubted the historicity of the Trojan war and its prominent characters, but since the 5th century (or even earlier) intelligent people have been puzzled by the fact that all the accounts were written by poets (Merkle, Die Ephemeris ...
I learned the hard way that many software packages' minor moon predictions are not accurate at all, so I use the NASA/JPL HORIZONS Web-Interface (http://ssd.jpl.nasa.gov/horizons.cgi) to produce an ephemeris. If you're not familiar with the term "ephemeris," it's a table that lists an astronomical object's predicted positions.
To help satellite operators prevent collisions in space, the Space-Based Telescopes for Actionable Refinement of Ephemeris (STARE) mission, which will consist of a constellation of nano-satellites in low earth orbit, intends to refine orbits of satellites and space debris to less than 100 meters.
Sitarski, "Warsaw ephemeris of the solar system: DE405/ WAW," Acta Astronomica, vol.
A new orbit was determined based on an observing arc of only 14 days, and an ephemeris was made available via JPL Horizons.
Timing ephemeris for the Crab pulsar is published monthly and available from Jodrell Bank monthly ephemeris (Lyne, A.G.).
William Jay (author); THE EPHEMERIS; Music of Words (Fiction: Literary) 54.95 ISBN: 9780984052868