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92- 83 A observations and elements

The elements published by Russell Eberst to SeeSat-L, and in the Molczan file, agree quite well with recent observations.

Following are elements for 92-83A, KH11, derived by Pierre Neirinck

92 83A 95112.2746703 .00022785
97.9145 225.7320 .0518703 189.2259 169.5391 14.8251917
best wishes Russell

The satellite was about a minute late, and slightly higher than the delay indicated. The reason I didn't compute a new elset is that it is usually maneuvred two-three times per year, with a decrease of MM by 0.016 - 0.1 / day each time. This winter, it has not maneuvred since about 94235, and its MM is higher than any previous elset I have, so it could maneuvre any day.

If the following elset is used, it should give reasonable positions until the maneuvre takes place.

USA 86 KH11-9   15.0  3.0  0.0  4.6 92-83A
1 22251U 92 83A   95112.2746703   .00017000  00000-0  20000-3 0    10
2 22251  97.9145 225.7320 0518703 189.2259 169.5391 14.8251917     10
When that happens, the satellite may be delayed by ten minutes per day, so it will be difficult to recover it, if not checked daily, and any delayed appearance reported immediately. No precision required for initial maneuvre report !

At one pass low in the east, I saw three flashes to mag. +2, about a minute apart.

Recently, they have become magnificent, but irregular. On May 9, 23:34 Swedish Summer Time, left of zeta Cygni, it brightened over 10 seconds to magn.+0, which it kept for about five seconds. Five seconds later, a short flash to magn. +1, and another one 15 seconds later.

On May 10 at 23:52 SST, it flashed to magn. -1 below beta Cygni, before I found it in the binocular field. Next flash to magn +0 was about a minute later.

Björn Gimle



bdp@mpe.mpe-garching.mpg.de