...complement of the altitude. The azimuth of a celestial body is the inclination of the vertical circle which passes through the body to the celestial meridian, and is measured by the arc of the celestial horizon ineluded between this vertical circle and the celestial meridian. Azimuth may be reckoned from...

...circumference, or arc of 360°, in the same time ; hence angles are sometimes measured in time, thus 24 h. = 360°, 1 h. = 15°. § 7. The hour angle of a...angle of the sun is 30° or 2 h., the solar time is 2 o'cp M. ; and when the hour angle is — 30 ' the time is 10 o'c. AM § 8. The sensible horizon of...

...transit when it crosses the lower branch. The hour angle of a heavenly body is the inclination of the circle of declination which passes through the body...and is measured by the arc of the celestial equator included between these two circles. Hour angles are reckoned positively towards the west, from the...

...sphere, is the inclination of the hour (or declination) circle passing through the body, or point, to the celestial meridian, and is measured by the arc of the equinoctial intercepted between these two circles. Hour angles are properly reckoned from the upper...

...sphere, is the inclination of the hour (or declination) circle passing through the body, or point, to the celestial meridian, and is measured by the arc of the equinoctial intercepted between these two circles. Hour angles are properly reckoned from the upper...

...vernal equinox, from Oh. to 24h. The hour angle of a heavenly body is the inclination of the hour circle which passes through the body to the celestial meridian,...and is measured by the arc of the celestial equator included between these two circles. Hour angles are reckoned positively towards the west, from the...