This calculator can calculate right ascension, oblique ascension, and oblique descension of a point of the celestial sphere from its ecliptical coordinates, and oblique ascension and descension of a point from its equatorial coordinates. Input the year, pole and coordinates into the proper form and read the results.

Warring!  You should input years BC, Southern poles, declinations and ecliptical latitudes as negative values. If you want to input 6S43, you must input -6 in degrees and 43 in minutes. But if you want to input 0S43, you must input 0 in degrees and -43 in minutes.

Ascensions And Descension From Ecliptical Coordinates

Year:         Pole:   ° '
Ecliptical longitue:   ° '   and latitude:   ° '

Right ascension:   
Oblique ascension:   
Oblique descension:   

Ascension And Descension From Equatorial Coordinates

Year:         Pole:   ° '
Right ascension:   ° '   and declination:   ° '

Oblique ascension:   
Oblique descension:   

 


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