Looking for software compute lat and long of features on solar system bodies

Hi, after trying unsuccessfully to implement a javascript calculator of
North's method for estimating the solar system body lat and long of
sunsports, I was wondering if there is any existing software that does
this. E.g., put in the physical ephemeris data for the Sun, Mars,
Jupiter and Saturn, and the position angle and distance between the
disk's center and the feature, what is the body-centric latitude and
longitude? Thanks - Canopus56 P.S. - See North's Advanced Amateur
Astronomy at pp.262-264

canopus56 wrote:
Hi, after trying unsuccessfully to implement a javascript calculator of
North's method for estimating the solar system body lat and long of
sunsports, I was wondering if there is any existing software that does
this. E.g., put in the physical ephemeris data for the Sun, Mars,
Jupiter and Saturn, and the position angle and distance between the
disk's center and the feature, what is the body-centric latitude and
longitude? Thanks - Canopus56 P.S. - See North's Advanced Amateur
Astronomy at pp.262-264

Hi Canopus56, I know nothing of code but HNSky (author Han Kleijn) has
both RA/Dec and Alt/Az readouts. The code is freely available and the
site has many links to astronomy code writers.
http://www.hnsky.org/

"John Carruthers" wrote in message
ups.com...
[HNSKY] has both RA/Dec and Alt/Az readouts.
The code is freely available and the
site has many links to astronomy code writers.
http://www.hnsky.org/

Sounds like you are talking about the celestial coords and not the planetary
lat and long., but thanks for the tip. I'll look at it. - Canopus56