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How does one compute the right ascension and declination of the Moon at a given time (or for that matter, the altitude and azimuth)?

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  • $\begingroup$ Do you want to know the equations or just a calculator? $\endgroup$ – Py-ser Jun 13 '14 at 2:35
  • $\begingroup$ Equations (fill) $\endgroup$ – ruadath Jun 17 '14 at 19:02
  • $\begingroup$ I assume you don't want to use an online/email solution like ssd.jpl.nasa.gov/?horizons is that correct? How much accuracy do you seek? You can replicate HORIZONS calculations if you really want to. I assume you're looking at the geocentric ra/dec/alt/az? The actual position of the moon varies up to 1 degree depending where on Earth you are. $\endgroup$ – barrycarter Oct 8 '14 at 20:31
  • $\begingroup$ Does this question not help? astronomy.stackexchange.com/questions/1/… $\endgroup$ – called2voyage Jun 24 '15 at 17:58
  • $\begingroup$ The computation of the position of the Moon is rather complex (depending on the desired accuracy) and requires a few pages of equations. These can be found in e.g. this paper: esoads.eso.org/abs/1988A%26A...190..342C $\endgroup$ – AstroFloyd Jul 16 '16 at 12:57