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Questions and Answers
Later on, TDT was shortened into Terrestrial Time (TT) - Moscow uses mean solar time, while New York uses ______ time
Later on, TDT was shortened into Terrestrial Time (TT) - Moscow uses mean solar time, while New York uses ______ time
sidereal
For the years earlier than 1988(Astronomical Almanac for 1988), the exact difference change in T = TD – UT can be deduced only from ______
For the years earlier than 1988(Astronomical Almanac for 1988), the exact difference change in T = TD – UT can be deduced only from ______
observations
Sidereal time is based on the positions of stars relative to the ______
Sidereal time is based on the positions of stars relative to the ______
meridian
Solar time is defined according to the Sun’s position relative to the ______
Solar time is defined according to the Sun’s position relative to the ______
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Hour angle (HA) of any object on the celestial sphere to be the time since it last crossed the ______
Hour angle (HA) of any object on the celestial sphere to be the time since it last crossed the ______
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If a star crossed the meridian 3 hours ago, its hour angle is ______
If a star crossed the meridian 3 hours ago, its hour angle is ______
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If a star will cross the meridian 1 hour from now, its hour angle is ______
If a star will cross the meridian 1 hour from now, its hour angle is ______
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By convention, time by the stars is based on the hour angle of the ______ equinox
By convention, time by the stars is based on the hour angle of the ______ equinox
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The length of a tropical year is about ______ days
The length of a tropical year is about ______ days
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For the values earlier than 1955 have been slightly corrected using Chapront’s new value n’ = -25.7376”/century2 for the tidal acceleration of the ______
For the values earlier than 1955 have been slightly corrected using Chapront’s new value n’ = -25.7376”/century2 for the tidal acceleration of the ______
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