MUOS 5 pre-launch estimated orbital elements

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 23 Jun 2016 09:21:36 -0400
MUOS 5 is scheduled for launch from CCAFS on an Atlas V-551 on 2016 Jun 24; the launch window is from 14:30 to 15:14
UTC. 

Spaceflight Now will provide live coverage:

http://spaceflightnow.com/2016/06/23/av063_journal/

The following *rough* TLEs are based on launch at window-open.

MECO 1                                                   167 X 624 km
1 78701U 78701A   16176.61274306  .00000000  00000-0  00000-0 0    09
2 78701  28.0000 311.6398 0337670 130.0000   3.3000 15.58830000    02

MECO 2                                                 193 X 34447 km
1 78702U 78702A   16176.62280212  .00000000  00000-0  00000-0 0    05
2 78702  26.0000 314.0402 7227302 179.9293   1.5500  2.38040000    09

MECO 3                                                3829 X 35758 km
1 78703U 78703A   16176.72451389  .00000000  00000-0  00000-0 0    03
2 78703  19.1207 322.8396 6096249 178.9535  82.1519  2.04875480    08

Centaur                                               3750 X 35214 km
1 78704U 78704A   16176.77543981  .00000000  00000-0  00000-0 0    00
2 78704  19.0956 322.6904 6083456 177.8914 123.1273  2.08797362    06

The MECO 3 and Centaur estimates are likely the most accurate of the four, and should be reasonably close to reality.

Spacecraft separation is planned to occur at T+2:53:18. Soon afterward, the Centaur will perform a Collision and
Contamination Avoidance Maneuver (CCAM), followed by a blow-down of remaining Centaur propellants. The typical Centaur
end of mission occurs 4400 s after spacecraft separation. Prospective observers should use the MECO 3 TLE to evaluate
visibility.

Eventually, the payload will enter an approximately 5 deg inclined GEO orbit in one of the existing UFO slots.

Ted Molczan


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Received on Thu Jun 23 2016 - 08:22:22 UTC

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