Siderial Timegreenspun.com : LUSENET : Astronomical_Calculations : One Thread
I have calculated my local sideal time from the equations given on the "Alt Az from RA Dec" page. This time is 1 minute and 10 seconds behind two other sources (my LX200 and SkyMap). Is this the best accuracy that can be expected from these formulas?
-- Mark Presco (email@example.com), January 23, 2001
When I checked this approximate formula, it seemed to be within decimal fractions of a second of LST. I shall have another look over the Weekend.
Thanks for the warning / feedback.
-- Keith Burnett (firstname.lastname@example.org), January 23, 2001.
LST = 100.46 + 0.985647 * d + long + 15*UT
gives answers within 0.7 sec of Web Mica. As I said in the direct e-mail, can you send me the LST value you get from your software together with the UT time, date and the longitude?
-- Keith Burnett (email@example.com), January 28, 2001.