Scott Campbell, Tom Laskowski, Tim Luton, Mike McCants, Jim Nix, Alberto Rango, Greg Roberts, Peter
Wakelin, Brad Young, and I, contributed observations used to determine one or more of the following
element sets.
OTV-1 435 X 442 km
1 36514U 10015A 10255.05642218 -.00000424 00000-0 -92303-5 0 04
2 36514 39.9844 205.7107 0004851 175.1614 184.9242 15.43374452 01
Arc 20100907.08-0911.81 WRMS resid 0.019 totl 0.012 xtrk
My 70007 and 70008 estimates of AEHF 1 were too low in mean motion; Mike and Scott posted a solution
that proved close, enabling new observations by Peter and Scott. The following is a refinement,
taking advantage of those observations:
AEHF 1 2222 X 49975 km
1 36868U 10039A 10255.17347407 .00000000 00000-0 00000-0 0 03
2 36868 18.2363 302.6261 7351931 193.3666 62.1763 1.48360888 00
Arc 20100911.09-0912.17 WRMS resid 0.010 totl 0.005 xtrk
Tim Luton's observations of Sep 11 appear to be of a different object, probably an UNID GTO; perhaps
one of those spotted recently by Greg and Kevin. I may have more on that later, after some analysis.
In the press briefing of Aug 30, the USAF stated that Segment 2 would more than double the perigee
height achieved in Segment 1. As of yesterday, that has been accomplished, but I am uncertain
whether Segment 2 is complete. Based on the assumption that the failed LAE (liquid apogee engine)
has performance typical of its type, I estimate that the REA (reaction engine assembly) may be able
to achieve the 6 deg inclination intended to have been achieved by the LAE, with the present
perigee. If so, then we can expect additional REA burns that primarily decrease inclination.
We will have to wait and see what happens, and observers should be prepared for the object to run
late by at least several minutes, and off-track, relative the above elements.
Below are the manoeuvres to-date:
Per Apo Inc
Seg Burn Date UTC km km deg
COLA Aug 20 278 49989 22.10
1 1 Aug 29 14:52 446 49975 21.62
1 2 Aug 31 13:25 589 49992 21.21
1 3 Sep 02 12:09 791 49983 20.81
1 4 Sep 04 11:05 982 49981 20.36
2 1 Sep 07 01:58 1146 49994 19.96
2 2 Sep 08 09:33 1370 49958 19.69 approx, short obs arc
2 3 Sep 10 09:07 1554 49985 19.20 approx, short obs arc
2 4 Sep 11 00:50 2222 49975 18.24
Times are approximate mid-point of lengthy burns near apogee.
AEHF 1 r 227 X 50052 km
1 36869U 10039B 10254.49260750 .00011948 00000-0 37686-2 0 08
2 36869 21.5962 305.9109 7904307 190.1650 128.5219 1.55193730 00
Arc 20100905.42-0912.11 WRMS resid 0.014 totl 0.010 xtrk
Ted Molczan
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