Re: request for your help = a option I would like to see added to satellite tracker

From: Marco Langbroek via Seesat-l <>
Date: Fri, 12 Feb 2016 08:43:00 +0100
> Ted shared a gem with me off list as we chased USA 161 around during the summer of 2011 about planar searches.  His elegantly simple paragraph has always stuck in my mind.
> "You asked about planar searching last night. Often we know most of the elements of an orbit fairly accurately, with the main uncertainty being the object's position in the orbit, i.e. mean anomaly. That being the case immediately after a new launch, before we have located the object, or due to the accumulation of perturbations after a long spell of invisibility, or after a manoeuvre of modest size."
> So vary the mean anomaly in some reasonable steps in a massaged generated TLE with the other more stable elements and follow the plane as you search.

This is indeed the technique which I use. Make clones of the TLE and vary the MA in steps of 5 degrees or so. Load these in your software. You'll see a line of clones in the sky map that shifts with time.

- Marco
Seesat-l mailing list
Received on Fri Feb 12 2016 - 01:43:50 UTC

This archive was generated by hypermail 2.3.0 : Fri Feb 12 2016 - 07:43:50 UTC