Sidereal time ("sidereal" pronounced /saɪˈdɪəriəl, sə-/ sy-DEER-ee-əl, sə-) is a system of timekeeping used especially by astronomers. Using sidereal...
up sidereal in Wiktionary, the free dictionary. Sidereal, meaning "of the stars", may refer to: Sidereal time Sidereal day Sidereal month Sidereal year...
In astrology, sidereal and tropical are terms that refer to two different systems of ecliptic coordinates used to divide the ecliptic into twelve "signs"...
A sidereal year (/saɪˈdɪəri.əl/, US also /sɪ-/; from Latin sidus 'asterism, star'), also called a sidereal orbital period, is the time that Earth or another...
celestial objects in general, the orbital period typically refers to the sidereal period, determined by a 360° revolution of one body around its primary...
calendar of this type is called a sidereal solar calendar. The mean calendar year of such a calendar approximates the sidereal year. Leaping from one lunation...
Sidereus Nuncius (usually Sidereal Messenger, also Starry Messenger or Sidereal Message) is a short astronomical treatise (or pamphlet) published in Neo-Latin...
distinguished from the sidereal day, which is one complete rotation in relation to distant stars and is the basis of sidereal time. In the case of a tidally...
minutes and 11.5 seconds, the sidereal month is about 2.2 days shorter than the synodic month. Thus, about 13.37 sidereal months, but about 12.37 synodic...
details, see the article on Classical compass winds).[citation needed] The sidereal compass rose demarcates the compass points by the position of stars ("steering...
the sidereal year. Instead, they employ their versions of the Metonic cycle. However, since the Metonic cycle is not very accurate for sidereal years...
local meridian (local hour angle, LHA) or from the first point of Aries (sidereal hour angle, SHA). The hour angle is paired with the declination to fully...
currently less than the sidereal year and its duration is very close to the Julian year of 365.25 days. The Gaussian year is the sidereal year for a planet...
2020. "Sidereal Astrology Explained". Retrieved 23 February 2023. "Western Sidereal Astrology Is Real Astrology:". 28 November 2008. "Free Sidereal Birth...
elements from antiquity up until the present. In Western astrology and Sidereal astrology four elements are used: Fire, Earth, Air, and Water. In Western...
while reoccurring every sidereal day. The remaining small changes in the culmination period time from sidereal year to sidereal year is on the other hand...
absolute value of its turning number. The paradox is related to sidereal time: a sidereal day is the time Earth takes to rotate for a distant star to return...
latitude sunspots in the 1850s and arrived at 25.38 days for the sidereal rotation period. Sidereal rotation is measured relative to the stars, but because the...
of the Earth's natural fluctuation of a solar day, and stellar day and sidereal day (using the celestial sphere) used for astronomy. In most countries...
on the/at its meridian (at its apparent highest point) 18.5 sidereal hours later. Sidereal hour angle, used in celestial navigation, is similar to right...
7 days. This is sometimes described as an inaccurate estimate of our modern sidereal period of 27.3 days, but using the ancient Indian calendar with Vedic months...
the Nakṣatra-s;[clarification needed] although there are 27-28 days to a sidereal month, by custom only 27 days are used. The following list gives the corresponding...
that is the position of the Sun in the Earth's sky. If the sidereal year (such as in a sidereal solar calendar) is used instead of the solar year, then the...
one complete rotation is 23 hours, 56 minutes, and 4.09 seconds – one sidereal day. The first experimental demonstration of this motion was conducted...
not the distinction between sidereal and tropical months) were first recognized in Babylonian lunar astronomy. The sidereal month is defined as the Moon's...
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