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WG3K > ANS 13.04.25 08:11z 47 Lines 2057 Bytes #13 (0) @ AMSAT
BID : ANS103.7
Read: GUEST
Subj: Changes to AMSAT-NA TLE Distribution
Path: SR8BBS<SR4BBX<DB0RES<DB0ERF<IZ3LSV<I0OJJ<EA2RCF<LU9DCE<W0ARP<N3HYM<
WG3K
Sent: 250413/0021Z 16196@WG3K.#SMD.MD.USA.NOAM LinBPQ6.0.24
Two Line Elements or TLEs, often referred to as Keplerian elements or keps
in the amateur community, are the inputs to the SGP4 standard mathematical
model of spacecraft orbits used by most amateur tracking programs. Weekly
updates are completely adequate for most amateur satellites. TLE bulletin
files are updated daily in the first hour of the UTC day. New bulletin
files will be posted immediately after reliable elements become available
for new amateur satellites. More information may be found at
https://www.amsat.org/keplerian-elements-resources/.
*The following satellites have been removed from this weekâÖs AMSAT TLE
distribution:*
DRAGON Fram2 NORAD Cat ID 63427 Splashdown 16:19 04 April 2025
Fram2Ham Provisional Cat ID 90000 Experiment terminated 08:42:50 O4 April
2025
*The following satellites have been added to this weekâÖs AMSAT TLE
distribution:*
TEVEL2-1 NORAD Cat ID 63217
TEVEL2-2 NORAD Cat ID 63218
TEVEL2-3 NORAD Cat ID 63219
TEVEL2-4 NORAD Cat ID 63213
TEVEL2-5 NORAD Cat ID 63214
TEVEL2-6 NORAD Cat ID 63215
TEVEL2-7 NORAD Cat ID 63239
TEVEL2-8 NORAD Cat ID 63237
TEVEL2-9 NORAD Cat ID 63238
*Please note* that Two/Three Line Element (TLE or 3LE) sets for spacecraft
launched in the near future will not be available, and new formats will be
used instead. The essence of the problem is that the US Space Force is
running out of numbers to catalog new satellites, see
https://celestrak.org/NORAD/documentation/gp-data-formats.php for details.
AMSAT will continue to disseminate TLE for satellites currently in orbit
indefinitely as we do now, but we seek comments regarding the best way to
support the amateur satellites of the future. For example, is there any
need to augment the weekly e-mail with a new list in one or more of the new
formats or is on line access via www.celestrak.org or www.amsat.org
sufficient? Please send your comments using the form at
https://www.amsat.org/webmaster-contact/ on the AMSAT web site.
[ANS thanks Joe Fitzgerald, KM1P, AMSAT Orbital Elements Manager for the
above information]
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