Convert hour (sidereal) to second (sidereal)
Please provide values below to convert hour (sidereal) [None] to second (sidereal) [None], or Convert second (sidereal) to hour (sidereal).
How to Convert Hour (Sidereal) to Second (Sidereal)
1 None = 3599.99999598905 None
Example: convert 15 None to None:
15 None = 15 × 3599.99999598905 None = 53999.9999398357 None
Hour (Sidereal) to Second (Sidereal) Conversion Table
| hour (sidereal) | second (sidereal) |
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Hour (Sidereal)
An hour (sidereal) is a unit of time based on the Earth's rotation relative to distant stars, equal to approximately 3,894 seconds, used primarily in astronomy.
History/Origin
The sidereal hour originated from the ancient division of the day based on Earth's rotation relative to the stars, differing from the solar hour by about 4 minutes, and has been used historically in astronomy for precise timekeeping.
Current Use
Sidereal hours are mainly used in astronomy and astrophysics to measure celestial events and the Earth's rotation relative to distant celestial objects, rather than in everyday timekeeping.
Second (Sidereal)
A second (sidereal) is the time measurement based on Earth's rotation relative to distant stars, approximately 3 minutes shorter than the solar second, used in astronomy.
History/Origin
The sidereal second has origins in astronomical observations of Earth's rotation relative to distant celestial objects. It was established to provide a precise time standard for celestial measurements, differing from the solar second used in everyday timekeeping.
Current Use
The sidereal second is primarily used in astronomy and astrophysics for precise time measurements related to celestial events, star tracking, and satellite navigation systems.