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!

Day	UT	Julian Date

Solar Position	R. A.	^°	Decl.	^°	Dist. (AU)		App. Diam.	^"
Phys. Ephem.	P	^°	B_o	^°	L_o	^°	Carr #
Pos. @ KSO	Azim.	^°	Height	^°	Sunrise		Sunset

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, measured in arc seconds.
P: Position angle of the northern extremity of the axis of Solar rotation, measured eastwards from the North point of the Solar disk.
B_o: 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).
L_o: 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
Azim.: Azimuth of the Sun at Kanzelhöhe Solar Observatory, measured from North eastwards.
Height: Height of the Sun above Horizon at Kanzelhöhe Solar Observatory. Not corrected for refraction!
Sunrise, Sunset: Sunrise and Sunset at Kanzelhöhe Solar Observatory in Universal Time (UT). Sunrise and Sunset are defined as times where the upper limb of the Solar disk appears to be at the horizon, correction for refraction under normal conditions is considered.

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