Greg Roberts and Peter Wakelin contributed observations used to determine one or more of the following element sets. Peter made new observations of DSP 19 on Apr 25 UTC, after recovering it on Apr 22 UTC. DSP F19 623 X 34721 km 1 25669U 99017A 09115.66926508 .00000085 00000-0 13000-2 0 04 2 25669 29.0555 63.9957 7088913 273.4867 15.1889 2.32820531 06 Arc 20090422.91-0425.88 WRMS resid 0.005 deg USA 200 996 X 39357 km 1 32706U 08010A 09115.46625290 .00000000 00000-0 00000-0 0 00 2 32706 63.8474 349.1618 7223154 270.2926 15.0784 2.00620000 01 Arc 20090425.86-0425.86 WRMS resid 0.002 deg On the Apr 13-25 arc, 08010A's eccentricity jumps to about 0.729, contrary to prediction by int2. For now, I decided to fix the eccentricity, and fit to Peter's several minutes long arc of Apr 25 UTC. Subsequent observations will clarify matters. USA 202 35730 X 35889 km 1 33490U 09001A 09115.22375846 .00000000 00000-0 00000-0 0 05 2 33490 2.8786 339.3227 0018859 97.3010 262.4626 1.00192535 06 Arc 20090421.75-0425.88 WRMS resid 0.004 deg On Apr 25 UTC USA 202 passed through 45.1 E, drifting west 0.292 deg/d. If its destination is near 44 E, then I estimate that the manoeuvre to synchronize its mean motion with Earth's rotation would occur around Apr 28-30, near perigee, which is within a few minutes of 11:18 UTC. 08731A 2634 X 37722 km 1 90082U 08731A 09115.65054900 .00000000 00000-0 00000-0 0 06 2 90082 64.2045 64.4072 6606529 258.0242 26.1582 2.00602565 02 Arc 20090413.93-0425.91 WRMS resid 0.002 deg Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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