Re: Difference between observed and predicted time of satellite pass

From: Geoff Nelson (gjnelson@absamail.co.za)
Date: Wed Mar 17 2004 - 02:52:16 EST

  • Next message: Peter Wakelin: "SATOBS 2004 March 16 (cont)" 

    Hi All

It seems as if this may have been the problem The tle's were only a 
week old. But I updated them and this morning the prediction and 
pbservation were the same. If I have more problems I will ask you 
guys.

Thanks for the help.

Geoff

Date forwarded: 	Tue, 16 Mar 2004 12:25:31 -0500
From:           	"Leo Barhorst" <leobarhorst@zonnet.nl>
To:             	"seesat-l" <SeeSat-L@satobs.org>
Subject:        	Re: Difference between observed and predicted time of satellite pass
Date sent:      	Tue, 16 Mar 2004 18:25:13 +0100
Forwarded by:   	SeeSat-L@satobs.org

> Hi Geoff,
> 
> The differance can be easily explaned.
> How old were your TLE's?
> When they are a bit outdated a difference of several minutes is quite
> well possible depending on how high the orbit of the sat is. Lower
> sats are more effected by the earth's atmosphere than higher ones.
> 
> 
> Greetings and clear, dark skies
> Leo Barhorst, Medemblik NL
> Cospar 4252 52.76350 N 5.09114 E 2 m ASL
> http://www.home.zonnet.nl/leobarhorst/index.html
> 
> 
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