The following changes to the AMSAT KEP distribution have been made this
1. REMINDER ... This week you will receive only one email. You will
receive the NASA-2 line (TLE) format only this week. The AMSAT verbose
format has been discontinued.
2. The following nine decayed satellites have been removed from the
distribution (spring cleaning):
XATCOBEO Cat#38082 Decayed 8/31/14
RS-39 Cat#38051 Decayed 10/15/14
E-STAR Cat#38079 Decayed 1/16/15
GOLIAT Cat#38085 Decayed 2/16/15
LO-75 Cat#39382 Decayed 10/23/14
SHINAISAT Cat#39572 Decayed 11/24/14
TEIKYOSAT Cat#39576 Decayed 10/25/14
CO-77 Cat#39577 Decayed 9/2/14
CHASQUI Cat#40117 Decayed 1/15/15
Next week the AMSAT verbose format will no longer be distributed by
AMSAT email. This is the element set that looks like the following:
Catalog number: 07530
Epoch time: 15021.49149419
Element set: 174
Inclination: 101.5028 deg
RA of node: 001.3581 deg
Arg of perigee: 228.2064 deg
Mean anomaly: 245.5090 deg
Mean motion: 12.53610988 rev/day
Decay rate: -1.6e-07 rev/day^2
Epoch rev: 83887
Please note that the following NASA 2-line (TLE) format will continue
to be sent. The NASA 2-line TLE) format looks like this:
1 07530U 74089B 15021.49149419 -.00000016 00000-0 17235-3 0 1747
2 07530 101.5028 001.3581 0011670 228.2064 245.5090 12.53610988838873
On January 22, 2015 I requested comments on discontinuing the AMSAT
verbose format and the comments that I have received to date indicate
that very few people would be affected by this change. The AMSAT
verbose format has out lived its usefulness. Those that are affected
by this change are considering work-arounds to allow them to use the
NASA 2-line (TLE) format. Note that most satellite tracking programs
readily accept the NASA 2-line (TLE) format if the correct upload
options are chosen.
The NASA 2-line elements will continue being sent each week as they
are now. In effect, the weekly email that you now receive will
consist only of one email entitled orbYYDDD.2l.amsat (for example).
The YY in the email title is the year (15 for 2015) and DDD is the
Julian day of the year (022 for January 22nd).
The email entitled orbYYDDD.amsat (for example) will NOT be sent.
One more time, the weekly NASA 2-line element (NASA TLE) format email
will continue to be sent each week as usual.
Joe Fitzgerald notes that another source of current Keplerian 2-line
data (TLE) is now available. The following URL has current data for
the AMSAT satellite list including the ISS and is updated at least
daily using the latest ISS elements from Johnson Spaceflight Center.
New satellites are added as soon as possible - so there is no need
to wait for the Thursday bulletin if you need an update right now.
I am pleased to announce that AMSAT's request to re-distribute AFSPC
elements from SpaceTrack has been approved for the period April 1, 2015 to
April 1, 2016. Our USSTRATCOM ODR (Orbital Data Request) to distribute the
KEPs was approved on March 31, 2015.
Thanks to AFSPC, Perry Klein, W3PK and Joe Fitzgerald, KM1P for their help
in this process.
We are "good to go" for another year.