The North Star (Polaris) is located within roughly 1/2 a degree from the north celestial pole.
So in the course of every 24 hours, it executes one complete cycle between the limits of
roughly-0.5 and +0.5 degrees from true north.
The distance of a star on the horizon, measured in degrees, is called its azimuth. Azimuth is the angle measured clockwise from true north to the star's position in the sky. It can range from 0° (north) to 360° (back to north).
The azimuth of a star is measured as the horizontal angle from a reference point, typically measured in degrees clockwise from north. It is often determined using a compass or an azimuth circle in astronomy.
That's the star's "azimuth".
That's the star's "azimuth".
That's the star's "azimuth".
Azimuth
Azimuth is the horizontal angular distance measured clockwise from true north, while altitude is the vertical angular distance above the horizon. Together, these coordinates help locate a star's position in the sky.
The point on the horizon that is due west has an altitude of zero and an azimuth of 270 degrees.
The distance of a star in degrees on the horizon as measured from true north is referred to as its azimuth. Azimuth is measured clockwise from true north, where 0° corresponds to true north, 90° to east, 180° to south, and 270° to west. This angular measurement helps in locating celestial objects in the sky relative to the observer's position on Earth.
Azimuth = 315° (True) Altitude = 0
Star Trek Online - 2010 VG was released on: USA: 2 February 2010 UK: 5 February 2010
This is probably about the "horizon coordinate system". Or, it's sometimes called the horizontal coordinate system. The system uses "altitude" and "azimuth" as coordinates. The azimuth is normally measured from due North as zero. So, that's the "three reference points", probably. Altitude is the angular height of a star above the horizon. Azimuth is the angle of a star measured along the horizon, from the pole.