Convert Right Ascension/Declination <==> Azimuth/Altitude

User Date (MM/DD/YYYY) user input
User Time (HH:MM:SS) user input
Calculated Date/Time
Time Zone Offset (HH) user input
Daylight Savings Time (HH) user input
Latitude (DD.MMSS) (+N-S) user input
Longitude (DD.MMSS) (-W+E) user input
Local Sideral Time (HH.MMSS)
Epoch Year (YYYY) user input
Right Ascension (HH.MMSS) user input
Declination (DD.MMSS) user input
Altitude (DD.MMSS) user input
Azimuth (DDD.MMSS) user input
Tirion 2000 page
Uranometeria 2000 page
Millennium page

To obtain system date/time, leave user date/time blank. To obtain azimuth/altitude, fill in the Right Ascension/Declination and click "Calculate". To obtain Right Ascension/Declination, fill in Azimuth/Altitude and click "Calculate".

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This web site was last updated 11/19/02