rise library

Properties

meanRefraction → double

Mean refraction of the atmosphere (radians). 0°34'.

final

stdh0LunarMean → double

Standard altitude for the Moon, low accuracy (radians). 0.125°.

final

stdh0Solar → double

Standard altitude for the Sun (radians). -0°50' (upper limb + refraction).

final

stdh0Stellar → double

Standard altitude for stellar objects (radians). -0°34'.

final

Functions

approxTimes(double lat, double lon, double h0, double th0, double alpha, double delta) → ({double rise, double set, double transit})?

Approximate rise, transit, set times.

hourAngle(double lat, double h0, double dec) → double?

Approximate hour angle for rise/set.

moonTimes(double jd, double lat, double lon, double deltaT, double th0, ({double dec, double parallax, double ra}) moonCoords(double jde)) → ({double rise, double set, double transit})?

Convenience: moonrise/moonset/transit for a Julian Day at midnight.

stdh0Lunar(double pi) → double

Standard altitude for the Moon considering horizontal parallax pi.

times(double lat, double lon, double deltaT, double h0, double th0, List<double> alpha3, List<double> delta3) → ({double rise, double set, double transit})?

Refined rise, transit, set times using 3-day interpolation.