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Solar Ephemeris Calculation Utility

For calculation of the Solar Ephemeris enter a date in the given format and press the Calculate button! Note: for simple and fast calculations low precision formulae were used - do not expect higher precision than given!
DayUTJulian Date
Solar PositionR. A. ° Decl.° Dist. (AU) App. Diam."
Phys. Ephem.P ° Bo° Lo° Carr #

 » Sun's Postion at your location...
Julian Date
Consecutively numbered days since Jan 01, 4713 B.C. (days start at noon 12 UTC!)
R. A.
Right Ascension of the Sun.
Decl.
Declination of the Sun.
Dist.
Distance of the Sun, measured in astronomical units (A. U.)
App. Diam.
Apparent diameter of the Solar disk, in arc seconds.
P
Position angle of the northern extremity of the axis of Solar rotation, reckoned eastwards from the North point of the Solar disk.
Bo
Heliographic latitude of the central point of the Solar disk. Angle of inclination of the Solar equator on the Ecliptic (counted positive if Solar North Pole is visible).
Lo
Heliographic longitude of the central point of the Solar disk, measured towards West (i. e. in direction of Solar rotation) from the hypothetical prime meridian which rotates with a mean synodical (Carrington) period of 27.2753 days.
Carr #
Number of Solar rotations since Nov. 9, 1853

 
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