[amsat-bb] NAYIF-1 TLEs

Wouter Weggelaar wouterweg at gmail.com
Sun Feb 19 20:22:33 UTC 2017


And attached the ones that have correct CRCs and some small differences:

NAYIF-corrected
1 17003U 17003A   17046.17714120 0.00000000  00000-0  00000-0 0  9993
2 17003  97.5521 107.5843 0004848 278.6481 296.8511 15.21991390    02

2017-008F-corrected
1 17004U 17004A   17050.08273148  .00155491  00000-0  65272-2 0   675
2 17004  97.5078 111.7095 0000538  25.3680 334.7132 15.22769132   566

updates ones are also at http://amsat-nl.org/download/NAYIF_TLE.txt

Wouter

On Sun, Feb 19, 2017 at 5:00 PM, Wouter Weggelaar <wouterweg at gmail.com> wrote:
> Hi All,
>
> The post-launch TLEs for NAYIF-1 are starting to become out-of date.
> We have produced a new set of unofficial TLEs that take into account
> the new AOS / TCA / LOS timings.
>
> Please however note that the post-launch TLEs do not contain the
> correct constants to make this TLE reliable in the long run.
>
> The only object that comes close in the recent TLEs from JSpOC is the
> 2017-008F object, but note that we are still missing a lot of objects.
> They are working round the clock to map and catalog all remaining
> objects, but 104 satellites presents a challenge.
>
> We are in contact with JSpOC about this and are doing our best to help
> them match up objects.
>
> For now, the unofficial ones are:
> NAYIF-corrected
> 1 17003U 17002A   17046.17714120 0.00000000  00000-0  00000-0 0  9994
> 2 17003  97.5521 107.5843 0004848 278.6481 296.8511 15.21991390    02
>
> and
>
> 2017-008F-corrected
> 1 17004U 17008F   17050.08273148  .00155491  00000-0  65272-2 0  9998
> 2 17004  97.5078 111.7095 0000538  25.3680 334.7132 15.22769132   566
>
> And we welcome any observations with regard to which one you used and
> how much it was off.
>
> I would think the 2017-008F variant will work better in the long run,
> but we will have to see.
>
> 73
>
> Wouter PA3WEG


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