Re: TLE format after Dec 31

Gene Heyler (
Thu, 23 Dec 1999 22:45:33 -0500

SPACECOM has asserted there is no need to fix their software for another
57 years; since there were no satellites before 1957, there can be no
confusion until 2057.

Gene Heyler
Columbia MD USA


From: Igor Lissov <>

> What will be epoch format in TLEs after December 31?
> 99365 -> 00001? Other?

All indications are that the YYDDD. format will be continue to be used
NORAD.   I intend to use it in generating the satelem files if that's
way the elsets come through from OIG and other sources.   For archival
purposes, I'll probably prepend "19" or "20" to the epoch as
since I don't retain the international desigator and so there won't be a

space problem (at least for a while :-) ).

> What software does process this future format?
> Traksat doesn't process 00001, it gives runtime error.

I think we're on our own in figuring out how what programs can deal with
problem, or in devising tricks to circumvent it.

Unsubscribe from SeeSat-L by sending a message with 'unsubscribe'
in the SUBJECT to