Falcon 9-PAZ estimated elements

From: Jon . via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 22 Feb 2018 14:22:19 +0100
Hello all,

Back in 2013 calculated an elset for this object that is scheduled to
launch today 22 of february of 2018 at 14:17:00 UTC from Vandenberg Air
Force Base. The press kit is available here:


These are aproximated elements for this launch, that are valid only if
launch occurs at the above time/date:

PAZ estimation                                           503 X 506 km
1 99999U 18500A   18053.63842593 0.00000000  00000-0  00000+0 0    05
2 99999  97.4487  62.2248 0002095 289.4813  70.9855 15.19156435    05

Orbit is 15+2/11 resonance SSO orbit.

PAZ will fly in the same orbit than TERRA SAR X (31698) and TANDEM X
(36605). Hoewer, MA does not match for an initial launch nearbound of these
two objects. MA would not match by 60º and RAAN by 0.49º. A similar thing
occured in TANDEM X launch that had been launched in a slightly higher
orbit than the above resonance and then maneuvered itself into its final
orbit, so it's not clear if the object will be inserted into a formation
orbit in the next few months or not. SpaceX Press Kit's tarjet is 514 Km
circular orbit, so that would be an orbit about 8-9 Km higher orbit than
the estimated elset.


Jon, COSPAR 6242, 42.9453, -2.82839, 623m, Bitoriano, Basque Country.
Seesat-l mailing list
Received on Thu Feb 22 2018 - 07:23:23 UTC

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