The discussion revolves around the concept of geostationary orbits, specifically addressing the meaning of a satellite's position given as "83.0°E". Participants explore the implications of this coordinate in locating satellites and the necessary calculations involved in determining bearing and elevation for satellite tracking.
Participants generally agree on the interpretation of "83.0°E" as a longitude reference for geostationary satellites, but there is no consensus on the specific calculations required for determining bearing and elevation, as some seek more detailed information while others provide general guidance.
Some participants mention the complexity of the calculations involved and the potential for approximations, indicating that the discussion may not cover all necessary mathematical steps or assumptions for accurate satellite tracking.
This discussion may be useful for individuals interested in satellite technology, amateur astronomy, or those developing applications related to satellite tracking and positioning.
xMonty said:Hi,
I know what geo stationary orbit is, my question is what does it mean when they say
satellite is at "83.0°E", don't you need more coordinates to find it??
sophiecentaur said:For a Geostationary orbit, the satellite must be in orbit around the Equator (so it will appear to be fixed in the sky. Its orbital distance is also fixed, of course. All that remains is to know at which angular position, around the Equator that it's stationed - hence just one number is needed.
sophiecentaur said:It means Longitude 083E. Vertically above that point on the Earth's Equator.
Google Maps have a satellite finder facility (search for it - it's there) in which you put your position (Lat / Long) and the satellite position (083). It will tell you the bearing and elevation needed to point at the satellite.
You can check by looking at other nearby dishes if you don't feel too confident.
sophiecentaur said:Could be a really handy App.
I searched "satellite finder" but I could find only sites that would do it for you - bummer.
I did a nav course about 40 years ago (pre-GPS) and I had some notes until recently on how to determine your position from star sightings. This is the same geometry, pretty much. It isn't simple but I'm sure there are approximations which would suit a mobile phone app accuracy.
Stop press. I found this link at the end of a search. I think it may be just what you need but you'll have to dig around in there. Of course the formulae are much easier than for astro nav because you don't need to consider TIME haha.