ephemeris
Example Sentences
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This is the offset to apply to Chariklo’s ephemeris to fit the observations.
From Nature ● Apr. 4, 2014
As a consequence of the several difficulties and drawbacks, when the computation of our ephemeris was started, in the year 1849, there were no tables which could be regarded as really satisfactory in use.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Simon Newcomb
One of the purposes of any ephemeris, and especially of that of the navigators, is to give the position of the heavenly bodies at equidistant intervals of time, usually one day.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Simon Newcomb
He will find that these same data, after being partially adopted in the ephemeris for 1900, were thrown out in 1901, and the antiquated ones reintroduced in the main body of the ephemeris.
From The Reminiscences of an Astronomer by Simon Newcomb
Commencing with the ephemeris for the year 1883, Hansen's tables are introduced with corrections to the mean longitude founded on two centuries of observation.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Simon Newcomb
The requisite changes in the astronomical and nautical ephemerides would be easily made.
It, perhaps, may be important to remark that we could not introduce this change immediately, since the ephemerides are already computed and published for three or four years in advance.
He will find the foreign ephemerides using uniform data worked out in the office of the "American Ephemeris and Nautical Almanac" at Washington for the years beginning with 1901.
From The Reminiscences of an Astronomer by Simon Newcomb
Subsequent ephemerides were prepared with more practical objects.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Simon Newcomb
Since that time, the introduction into foreign ephemerides of the improved tables of Le Verrier have rendered them, on the whole, rather more accurate than our own.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Simon Newcomb
