安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Sidereal time - Wikipedia
Sidereal time is a "time scale that is based on Earth's rate of rotation measured relative to the fixed stars " [1] A sidereal day (also known as the sidereal rotation period) represents the time for one rotation about the planet axis relative to the stars [2]
- SIDEREAL Definition Meaning - Merriam-Webster
The meaning of SIDEREAL is of, relating to, or expressed in relation to stars or constellations : astral
- Sidereal Astrology Chart, Online Calculator | Astro-Seek. com
Sidereal Astrology Charts Free Online Astrology Calculators Vedic Jyotish Horoscopes Sidereal Charts Birth Chart Transit Chart (Gochar) Solar Return Progressions (Ext settings) Synastry Chart (Kundli Matching) Sidereal vs Tropical Chart Dominant Planet Calculator Sidereal Tools and Tables Ayanamsa Calculator Sidereal Ephemeris Fixed Stars Tables Returns on Particular Degree Nakhsatra
- Sidereal - Wikipedia
Sidereal, meaning "of the stars", may refer to: Sidereal time Sidereal day Sidereal month Sidereal year Sidereal period of an object orbiting another astronomical object Sidereal and tropical astrology
- Sidereal time: What is it? - EarthSky
A sidereal day measures the rotation of Earth relative to the stars rather than the sun It helps astronomers keep time and know where to point their telescopes without worrying about where Earth
- SIDEREAL Definition Meaning | Dictionary. com
SIDEREAL definition: determined by or from the stars See examples of sidereal used in a sentence
- Sidereal time | Celestial Coordinates, Celestial Sphere Equinoxes . . .
Sidereal time may be defined for any place on the Earth, but in the international system used by astronomers each sidereal day begins at the instant the vernal equinox transits the prime meridian The vernal equinox is the point on the celestial sphere at which the Sun crosses the plane of the Equator, moving from south to north
- SIDEREAL | English meaning - Cambridge Dictionary
SIDEREAL definition: 1 of or calculated by the stars: 2 of or calculated by the stars: Learn more
|
|
|