Determines the location of the sun at a given time (or times, if the input is an array
Timeobject), in geocentric coordinates.
The time(s) at which to compute the location of the sun.
The algorithm for determining the sun/earth relative position is based on the simplified version of VSOP2000 that is part of ERFA. Compared to JPL’s ephemeris, it should be good to about 4 km (in the Sun-Earth vector) from 1900-2100 C.E., 8 km for the 1800-2200 span, and perhaps 250 km over the 1000-3000.