Definition of Sidereal. Meaning of Sidereal. Synonyms of Sidereal

Here you will find one or more explanations in English for the word Sidereal. Also in the bottom left of the page several parts of wikipedia pages related to the word Sidereal and, of course, Sidereal synonyms and on the right images related to the word Sidereal.

Definition of Sidereal

Sidereal
Sidereal Si*de"re*al, a. [L. sidereus, from sidus, sideris, a constellation, a star. Cf. Sideral, Consider, Desire.] 1. Relating to the stars; starry; astral; as, sidereal astronomy. 2. (Astron.) Measuring by the apparent motion of the stars; designated, marked out, or accompanied, by a return to the same position in respect to the stars; as, the sidereal revolution of a planet; a sidereal day. Sidereal clock, day, month, year. See under Clock, Day, etc. Sideral time, time as reckoned by sideral days, or, taking the sidereal day as the unit, the time elapsed since a transit of the vernal equinox, reckoned in parts of a sidereal day. This is, strictly, apparent sidereal time, mean sidereal time being reckoned from the transit, not of the true, but of the mean, equinoctial point.

Meaning of Sidereal from wikipedia

- Sidereal time /saɪˈdɪəriəl/ is a timekeeping system that astronomers use to locate celestial objects. Using sidereal time, it is possible to easily point...
- Sidereal and tropical are astrological terms used to describe two different definitions of a year. They are also used as terms for two systems of ecliptic...
- Sidereal, meaning "of the stars", may refer to: Sidereal time Sidereal day Sidereal month Sidereal year Sidereal period of an object orbiting a star Sidereal...
- as the sidereal period, determined by a 360° revolution of one celestial body around another, e.g. the Earth orbiting the Sun. The term sidereal denotes...
- A sidereal year (from Latin sidus "asterism, star", British English /saɪˈdɪəɹi.əl/, American English /saɪˈdɪɹi.əl/ or /səˈdɪɹi.əl/) is the time taken by...
- Therefore, the synodic month takes 2.2 days longer than the sidereal month. Thus, about 13.37 sidereal months, but about 12.37 synodic months, occur in a Gregorian...
- this type is called a sidereal solar calendar[citation needed]. The mean calendar year of such a calendar approximates the sidereal year. Indian calendars...
- Aquarius sign between about January 21 and about February 20, while under the sidereal Zodiac, the sun is in Aquarius from approximately February 15 to March...
- vernal equinox, its sidereal day, is 86164.090 530 832 88 seconds of mean solar time (UT1) (23h 56m 4.090 530 832 88s). Thus the sidereal day is shorter than...
- between ancient India and Gr**** empire of Bactria. The Hindu zodiac uses the sidereal coordinate system, which makes reference to the fixed stars. The Tropical...
Loading...