Op 23-nov-2008, om 7:07 heeft bhanuparis het volgende geschreven:
> Hello,
>
> I am interested in this formula too.
> Do you have this coded or do you have in electronically,
>
> will it be possible to send me a copy.
That is from an old thread! It referred to Lunar Tables and Programs
by the Chapronts. You can buy their book from Willmann Bell. In my
first response I gave the main terms down to 1/10th of a degree:
"
So for the longitude of the ascending lunar node on the mean ecliptic
of the date (their p.27 and p.82):
Omega = 125.0446 - 1934.13618*t + 20.76210E-4*t**2 +2.139E-6*t**3
-1.650E-8*t**4 +
-1.4979*sin( 49.1562 -75869.8120*t +35.458E-4*t**2 +4.231E-6*t**3
-2.001E-8*t**4) [2D-2F]
-0.1500*sin(357.5291 +35999.0503*t -1.536E-4*t**2 +0.041E-6*t**3 ) [l']
-0.1226*sin( ... ) [2D]
+0.1176*sin( ... ) [2F]
"
More accurate expressions for the main arguments you will find in
their 2002 paper in Astronomy and Astrophysics:
http://www.aanda.org/index.php?
option=article&access=standard&Itemid=129&url=/articles/aa/abs/
2002/20/aa2201/aa2201.html
HTH,
--
Tom Peters
