hour angle


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  • noun

Synonyms for hour angle

the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body

Related Words

(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing

References in periodicals archive ?
For this, you need the Local Hour Angle (LHA), which is simply the GHA minus your longitude (for the Western Hemisphere).
and the geometric mean sunrise hour angle on a horizontal surface, or theoretical sunrise/ sunset [w.
In Figure 10, angle T is the hour angle measured from the north-south line around the equatorial dial.
The direct radiation is empirical established depending on the extraterrestrial radiation, the medium solar constant, the day number during a year, the distortion factor, the solar altitude angle, the solar declination, the latitude angle, the solar hour angle, and the local solar time.
The hour angle h of the moon may be computed from an observed altitude, the known latitude [phi] and an approximate value for the declination "[delta]
To understand these solutions one is required to know basic astronomical nomenclature such as declination, hour angle, zenith angle, etc.
In reality, Local Mean Time is defined as the hour angle of the mean Sun, referred to one's local meridian, plus 12 hours.