sidereal year

Definitions

  • WordNet 3.6
    • n sidereal year the time for the earth to make one complete revolution around the sun, relative to the fixed stars
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Webster's Revised Unabridged Dictionary
    • Sidereal year the time in which the sun, departing from any fixed star, returns to the same. This is 365 days, 6 hours, 9 minutes, and 9.3 seconds.
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Chambers's Twentieth Century Dictionary
    • Sidereal year the period required by the sun to move from a given star to the same star again—affected by Nutation only, one of the most invariable quantities which nature affords us, having a mean value of 365 days, 6 hours, 9 minutes, 9.6 seconds
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Etymology

Chambers's Twentieth Century Dictionary
A.S. geár, gér; Ger. jahr, Ice. ár, Gr. hōra, season.

Usage

In literature:

SIDEREAL YEAR, the period during which the earth makes a revolution in its orbit with respect to the stars.
"The Nuttall Encyclopaedia" by Edited by Rev. James Wood
The first half of the month of April can be called the most brilliant sidereal period of the year.
"A Field Book of the Stars" by William Tyler Olcott
It has received the name of sidereal year.
"Astronomy for Amateurs" by Camille Flammarion
The length of the sidereal year is 365 days, 6 hours, 9 minutes.
"The Astronomy of the Bible" by E. Walter Maunder
Owing to the precession of the equinoxes it is longer than a tropical or sidereal year by 25 minutes and 2.3 seconds.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2" by Various
The year, which comprises 365.25 solar days, contains 366.25 sidereal days.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7" by Various
The length of this sidereal solar year was determined in the following manner.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4" by Various
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In news:

The grave of 18-year-old Shannon Siders, murdered in 1989.
East Siders are bummed that for the third straight year the Macy's Fourth of July fireworks will launch again from the Hudson River.
Over the past few years, two brands of shoes have had dominant popularity among young teenagers: Sperry Top-Sider and TOMS.
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In science:

It turns out that at this time of the year sidereal and solar hour almost coincide: at solar hour 3.5 we have sidereal hour 4.
Studying the coincidence excess between EXPLORER and NAUTILUS during 1998
However the signals in 1998 are concentrated in a short time interval with a special sidereal time signature, suggesting that the phenomenon, if any, is local both in space and time, and therefore it may not be expected to happen again in a few year time scale.
Studying the coincidence excess between EXPLORER and NAUTILUS during 1998
To lift the redundancy, more than a year of data is required so annual offsets may be de-correlated from the twice rotational and sidereal sidebands listed.
Rotating Resonator-Oscillator Experiments to Test Lorentz Invariance in Electrodynamics
The close coincidence of the sideral period of the largest planet, Jupiter (11.87), with the about eleven-year cylicity of the solar activity has been known for long time. In the middle nineteen-century R.
Impact Generated Shockwaves are Proposed for the Origin of Sunspots to Explain the Detected Planetary Effects on the Solar Activity
Since the recurrence of the seasons depends on the periodicity of the equinoxes, rather than on the actual time it takes the earth to go once around the sun, the modern calendar is based on the “mean tropical year,” which is shorter than the sidereal year by about 20 minutes (i.e., 1/26,000 of a sidereal year).
The sun's position in the sky
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