Lunar Azimuth and Altitude Estimation Algorithm
by Darin Koblick
15 Feb 2009
(Updated 18 Aug 2010)
Predict the Lunar Azimuth and Altitude within +/- .2 deg of any lat and lon for a given UTC
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| File Information |
| Description |
This algorithm will accept a Latitude, Longitude and Altitude location as well as a specific universal coordinated time. It will use this information and calculate the position of the moon in a local coordinate frame (az and alt aka az and el).
Example Function Call:
[Az El] = LunarAzEl('1991/05/19 13:00:00',50,10,0)
Input List:
UTC Date and Time - Use format YYYY/MM/DD hh:mm:ss
Latitude - Site Latitude in degrees -90:90 -> S(-) N(+)
Longitude - Site Longitude in degrees -180:180 W(-) E(+)
Altitude - Site Altitude in km
Output List:
Az - Lunar Azimuth angle in degrees
El - Lunar Elevation/Altitude Angle in degrees |
| MATLAB release |
MATLAB 7.7 (R2008b)
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| Updates |
| 18 Feb 2009 |
Modified the RA DEC to Az Alt conversion. |
| 05 Mar 2009 |
Bug Fix: Azimuth quadrant check in LunarAzEl |
| 14 Apr 2009 |
Enhanced modeling fidelity of the lunar orbit by adding large perturbation terms. |
| 18 Aug 2010 |
Updated to make use of the site altitude |
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