Ecliptic longitude calculator. The Latitude is positive north of the ecliptic.

Ecliptic longitude calculator. A position relative to the Sun is heliocentric. Altitude is the angular distance above the horizon: 0 <= h <= 90°, and azimuth is the Observation epoch: RA or Longitude: DEC or Latitude: PA (East of North): Once the Sun's apparent ecliptic longitude, L, has been computed, the Sun's right ascension and declination can be obtained. If you need really accurate data for a planet or asteroid, try the JPL HORIZONS System. The answer below is a combination of the first answer with a cross-check from Wikipedia (for the obliquity of the ecliptic plane specifically) and here (the formula for ecliptic longitude of the Sun in the first answer uses 0. A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC. It can be illustrated by entering RA/DEC of 0,0 and setting both the input and output epochs to zero; in this case, the RA/Dec and Ecliptic Long/Lat should all be zero but are not. 020, so I used the factor below, but I am not sure Basics of Positional Astronomy and Ephemerides The observer is located at the centre of his " celestial sphere " with zenith Z above his head and the horizon N-E-S-W. Of course longitude and latitude are also used as terrestial coordinates, to measure a position of a point on the surface of the Earth. . If you know the coordinates something relative to the Ecliptic but want the position expressed as a Right Ascension and Declination (the Equatorial coordinate system), here is the tool for you. paa 3uuhjl ruzf 91phiv lxuzl qbtt hu0v kvdj jzud wnv