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Re: TLE accuracy



Once every 2-4 weeks For These birds:
 AO-51, SO-50 and AO-27 

For ISS, Once a Week.
ISS Is Manned, and all Manned Birds change their
positon more frequently.  Gyros, Engine burns, Big
solar panels, etc.  All cause your keps to drift
much faster than unmanned Birds.

Also.  The Higher the orbit, the longer the keps will
last.

wf1f

--- n3wwn@futuretek.cx wrote:

> Hi!
> 
> I'm wondering how often I should update my TLE data
> in order to be within
> a minute or two of predicted passes?
> 
> Will once-per-week suffice?  I'm mostly interested
> in ISS, AO-51, SO-50
> and AO-27 presently.
> 
> Thanks!
> 
> 73 de Rich N3WWN (FN00)
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