> I'm new to the list and have a question regarding GEO sat's. > At what speeds do they travel? > I realize that relative to the earth at 22,000 miles they travel 0, > but > let's say bring their orbit down to LEO, how fast would they be > traveling? > 17,500? > I was able to observe one in my homemade 10" telescope, very cool. > Stars > move, Satellite doesn't. I'll theorize: If we assume that GEO sats orbit at 22,000 miles (I think it's closer to 25,000 miles, but I'm not sure), then I theorize that we can find their speed (relative to what I don't know). I think we can just extend the radius of the Earth 22,000 on paper to discover the satellite's speed: Diameter = Pi*d Diamteter = Pi*(22,000+22,000+8,000[Diamter of Earth]) Diameter = Pi*(52,000) Diameter = 163,362 miles. Now, this theoretical distance is traveled in approximately 24 hours: Speed = s[Distance]/t Speed = 163,362/24 Speed = 6,806 miles per hour This translates into 1.89 miles per second, which translates into the perferred 3 kilometers per second. [This was all a big guess. I hope it's right! : - )] ------------------------------ Jonathan T. Wojack tlj18@juno.com 39.706d N 75.683d W http://www.angelfire.com/stars2/projectorion 4 hours behind UT (-4) ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Thu Oct 11 2001 - 16:15:55 EDT