sidereal time

Noun

Meaning

measured by the diurnal motion of stars

Source: WordNet

Synonyms

sidereal day sidereal year right ascension sidereal month mean solar time hour angle celestial longitude sidereal hour celestial longitude of aries equatorial coordinate equatorial hour angle equatorial longitude of aries sidereal hour angle sidereal meridian greenwich hour angle of aries
Show all synonyms

Hypernyms

cosmic time

Hyponyms

day sidereal day sidereal year sidereal month sidereal hour

Examples

Both solar time and sidereal time make use of the regularity of Earth's rotation about its polar axis, solar time following the sun while sidereal time roughly follows the stars. Source: Internet

Glossary, s.v. hour angle, hour circle, sidereal time. Source: Internet

Local sidereal time at any locality differs from the Greenwich sidereal time value of the same moment, by an amount that is proportional to the longitude of the locality. Source: Internet

Nowadays, UT is the observed orientation of the Earth relative to an inertial reference frame formed by extra-galactic radio sources, modified by an adopted ratio between sidereal time and solar time. Source: Internet

When one moves eastward 15° in longitude, sidereal time is larger by one sidereal hour (note that it wraps around at 24 hours). Source: Internet

Close letter words and terms

sidereal rotation period sidereal second sidereal table sidereal year siderealize sidereally