A vertical angle in degrees above (positive) or below (negative) the horizon. The value is in the range [-90, +90]. The altitude angle is optionally adjusted upward due to atmospheric refraction.
A horizontal compass direction angle in degrees measured starting at north and increasing positively toward the east. The value is in the range [0, 360). North = 0, east = 90, south = 180, west = 270.
The declination of of the celestial body in degrees.
The value in the range [-90, +90].
If altitude was adjusted for atmospheric reaction, dec
is likewise adjusted.
The right ascension of the celestial body in sidereal hours.
The value is in the reange [0, 24).
If altitude was adjusted for atmospheric reaction, ra
is likewise adjusted.
Represents the location of an object seen by an observer on the Earth.
Holds azimuth (compass direction) and altitude (angle above/below the horizon) of a celestial object as seen by an observer at a particular location on the Earth's surface. Also holds right ascension and declination of the same object. All of these coordinates are optionally adjusted for atmospheric refraction; therefore the right ascension and declination values may not exactly match those found inside a corresponding EquatorialCoordinates object.