Re: TLE with future epoch

From: wkitty42--- via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 2 May 2017 12:40:58 -0400
On 04/30/2017 09:40 PM, Dr. T.S. Kelso wrote:
> Yes, an age of -1.32 days means that at the time the data was assessed, that
> TLE had an epoch 1.32 days in the future.

thank you, sir... i have a TLE processing application (a replacement for dave 
ransom's orbitel, may he R.I.P) wherein i had to make specific allowances for 
epoch times but i don't remember if that was for epochs that went backwards or 
forwards... i think it was backwards as one of the main objects of the tool is 
to merge TLE lists and retain the newest TLEs in the final output... when the 
epoch went backwards, the newest was not the one retained... the epoch is the 
only way i know of to place a ""timestamp"" on the TLEs... now that i've had 
some time to consider the situation, i think this does not really affect my 
application but the information is important to knowledge to retain...

> Currently, the data is pulled and assessed every 2 hours at 5 minutes past
> the hour, but eventually I will make that page dynamic, so that it provides
> the age from the time the page is requested.  - TS

this is also worthy information to know... thank you, again :)


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Received on Tue May 02 2017 - 11:41:21 UTC

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