WebNavigation and Ancillary Information Facility NIF Fundamental Concepts 4 •An epoch is an instant in time specified by some singular event –Passage of a star across your zenith meridian –Eclipse of a spacecraft signal as it passes behind a solid body •Clocks –Clocks count epochs specified by events such as: “regular” oscillations of a pendulum, quartz … WebEpoch. Celestial coordinates of right ascension (RA) and declination (Dec) are used to help locate objects on the sky. Although this coordinate system is very similar to latitude and …
EPOC - definition of EPOC by The Free Dictionary
WebApr 23, 2009 · Epoch (Chronology) Epoch, in chronology (timekeeping), a point in time, such as 302 B.C. or October 30, 1936, or 7:34 A.M. Often the term is used in a more … WebDefine epochs. epochs synonyms, epochs pronunciation, epochs translation, English dictionary definition of epochs. n. 1. A particular period of history, especially one considered remarkable or noteworthy. ... epoch - (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body ... free all sds sheets
Epoch - definition of epoch by The Free Dictionary
WebDefinition of epoch in the Definitions.net dictionary. Meaning of epoch. What does epoch mean? ... In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and ... WebEpoch (astronomy) In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as celestial coordinates, or … WebDefine Epoch (astronomy). Epoch (astronomy) synonyms, Epoch (astronomy) pronunciation, Epoch (astronomy) translation, English dictionary definition of Epoch … blithe books