sidereal year

n. The time required for one complete revolution of the earth about the sun, relative to the fixed stars, or 365 days, 6 hours, 9 minutes, 9.54 seconds in units of mean solar time.

sidereal year

n (Astronomy) See year⁵

year

(yɪər)

n. 1. a period of 365 or 366 days, in the Gregorian calendar, divided into 12 calendar months, now reckoned as beginning Jan. 1 and ending Dec. 31 (calendar year). Compare common year, leap year. 2. a period of the same length in other calendars. 3. a. a space of 12 calendar months calculated from any point: We expect to finish in a year. b. fiscal year. 4. Astron. a. Also called lunar year. a division of time equal to 12 lunar months. b. Also called solar year. a division of time equal to 365 days, 5 hours, 48 minutes, and 46 seconds, representing the interval between one vernal equinox and the next. c. Also called sidereal year. a division of time equal to the solar year plus 20 minutes, the time it takes the earth to complete one revolution around the sun. 5. the time in which any planet completes a revolution around the sun. 6. a full round of the seasons. 7. a period out of every 12 months devoted to a certain pursuit, activity, or the like: the academic year. 8. years, a. age: a person of her years. b. old age: a man of years. c. time; period: the years of hardship. d. an unusually or markedly long time: We haven't spoken in years. 9. a group of students entering school or college, or those graduating in the same year; class. Idioms: year in and year out, regularly through the years. Also, year in, year out. [before 900; Middle English yeer, Old English gēar, c. Old Saxon, Old High German jār, Old Norse ār, Gothic jer; akin to Greek hôros year]

sidereal year

Equals the time that it takesthe Earth to revolve around the Sun from one fixed point (usually a star) back to the same point (365 days, 6 hr, 9 min, 9 sec).

Thesaurus

Noun

sidereal year - the time for the earth to make one complete revolution around the sun, relative to the fixed starsyear - the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days"sidereal time - measured by the diurnal motion of stars

Translations

sidereal year

sidereal year,

time required for the earth to complete an orbit of the sun relative to the stars. The sidereal year is 365 days, 6 hr, 9 min, 9.5 sec of mean solar time (see solar timesolar time,
time defined by the position of the sun. The solar day is the time it takes for the sun to return to the same meridian in the sky. Local solar time is measured by a sundial.
..... Click the link for more information. ). It is 20 min longer than the tropical yeartropical year,
time between successive vernal equinoxes; 365 days, 5 hr, 48 min, 46 sec of mean solar time (see solar time). The tropical year is the basis of the year used in the Gregorian calendar.
..... Click the link for more information. because of the precession of the equinoxesprecession of the equinoxes,
westward motion of the equinoxes along the ecliptic. This motion was first noted by Hipparchus c.120 B.C. The precession is due to the gravitational attraction of the moon and sun on the equatorial bulge of the earth, which causes the earth's axis to
..... Click the link for more information. ; for this reason, the sidereal year does not stay in step with the seasons.

sidereal year

The time taken by the Earth to complete one revolution around the Sun with reference to a background star or stellar group, which is regarded as fixed in position. It is thus the interval between two successive passages of the Sun, in its apparent annual motion around the celestial sphere, through a particular point relative to the stars. It is equal to 365.256 36 days and is about 20 minutes longer than the tropical year.

Sidereal Year

(religion, spiritualism, and occult)

A sidereal year is the time it takes Earth to complete an orbit of the Sun relative to the fixed stars. The length of a sidereal year is 365 days 6 hours 9 minutes and 9.54 seconds, which is slightly longer than a solar year.

Sidereal Year

the period of time between two successive arrivals of the sun, in its apparent annual motion, at the same point (with respect to the stars) on the celestial sphere. The sidereal year is equal to the earth’s period of revolution around the sun, with respect to the stars. The duration of a sidereal year is 365.25636 mean solar days.

sidereal year

[sī′dir·ē·əl ′yir] (astronomy) The time period relative to the stars of one revolution of the earth around the sun; it is about 365.2564 mean solar days.

sidereal year

Measurement of the sidereal year.

Left wing down. Nose remains on heading. Flight path to the left of the heading. sidereal year

The ball of the slip indicator is inside the turn indicating that it is an unbalanced turn. sidereal year

The period of one complete revolution of the earth around the sun with respect to a fixed point, 365 days 6 h 9 min and 9.5534 s in the year 1900, and increasing at a rate of 0.0001 s annually. Because of the precession of the equinoxes, this is about 20 min longer than a tropical year.

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Words related to sidereal year

noun the time for the earth to make one complete revolution around the sun, relative to the fixed stars

Related Words