View Source SpaceDust.Utils.Constants (Space Dust v0.3.0)

Summary

Functions

Julian date of J2000.0 - 2451545.0

Julian century - 36525.0

seconds per day - 86400.0

Convert a raw IAU 1980 nutation coefficient to radians.

Julian date of the Unix epoch - 1970-01-01 00:00:00 UTC (JD 2440587.5)

Functions

arcsecToRadians()

degreesToRadians()

j2000()

Julian date of J2000.0 - 2451545.0

julianCentury()

Julian century - 36525.0

radiansToArcsec()

radiansToDegrees()

secondsPerDay()

seconds per day - 86400.0

ttArcsecToRadians()

Convert a raw IAU 1980 nutation coefficient to radians.

The IAU 1980 table is published in units of 0.0001 arcsecond - the leading term, -171996, is the well-known dPsi = -17.1996". Divide by 10000, not 1000.

twopi()

unixEpochJulianDate()

Julian date of the Unix epoch - 1970-01-01 00:00:00 UTC (JD 2440587.5)