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vit julian

Exactly 365. 25 days, in which a century (100 years) is exactly 36525 days and in which 1900. 0 corresponds exactly to 1900 January 0. 5 (from the Julian-date system, which is half a day different from civil time or UT). The standard epoch J2000. 0, now used for new star-position catalogues and in solar-system-orbital calculations, means 2000 Jan. 1. 5 Barycentric Dynamical Time (TDB) = Julian Date 2451545. 0 TDB. When this dynamical, artificial "Julian year" is employed, a letter "J" prefixes the year.

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vit-dritë
물리; 일반 물리학

The distance traveled by light through empty space in one year, it is equal to 9.46 x 1012 km.

vit-dritë
물리; 천문학

The distance traveled by light in a full year, equal to some 10 trillion kilometers (or about 6 trillion miles).

vit anormal
천문학; 일반 천문학

1) A period of time based on the revolution of the Earth around the Sun, where a year is defined as the mean interval between successive passages of the Earth through ...

vit kalendarik
소매; 기타

A 365-day period that begins on January 1 and ends on December 31.

vit fiskal
소매; ignore

Any accounting period that contains one of the following: 1) 52 weeks 2) 13 four-week periods 3) Calendar year (Jan 1 - Dec 1) 4) Any 12-month period

heliocentrik
천문학; 일반 천문학

Referring to the sun. A heliocentric orbit is one based on the sun as one of the two foci of the (elliptical) orbit (or as the center of a circular orbit); a heliocentric ...

datë juliane
천문학; 일반 천문학

The interval of time in days (and fraction of a day) since Greenwich noon on Jan. 1, 4713 BC. The JD is always half a day off from Universal Time, because the current definition ...

ekuinoks
천문학; 일반 천문학

Either of the two points (vernal, autumnal) on the celestial sphere where the ecliptic (which is the apparent path of the sun on the sky) intersects the celestial equator. Due to ...

shtrirje
천문학; 일반 천문학

Angular distance of a celestial object from the sun in the sky. In standard ephemerides, this is usually denoted by the Greek letter epsilon (or by the abbreviation "Elong. "). A ...

pjerrësi
천문학; 일반 천문학

One element of the astronomical coordinate system on the sky that is used by astronomers. Declination, which can be thought of as latitude on the earth projected onto the sky, is ...

ekliptik
천문학; 일반 천문학

The apparent path of the sun against the sky background (celestial sphere); formally, the mean plane of the earth's orbit about the sun.

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