Re: NROL-82 search elements

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 27 Apr 2021 21:37:51 +0200
The payload launched on NROL-82 has been catalogued as USA 314 [48247/21032A].

Analysis of 6 S-band Doppler curves obtained during the first 24h
since launch yield the following orbital elements, determined solely
from the radio observations.

USA 314                                                  530 x 753 km
1 48247U 21032A   21117.26836100  .00000000  00000-0  50000-4 0    03
2 48247  98.0431 230.4767 0158980  78.5834  17.5573 14.76193476    03

This orbit is fully consistent with the one determined from video
observations. Barring any further maneuvers, the orbit should be good
to within better than a minute over the next day or so.

For completeness, I repeat my video observations of USA 314 here using
the correct designation.
48247 21 032A   4171 G 20210426234525258 17 25 1617990+842627 37 S
48247 21 032A   4171 G 20210426234525910 17 25 1620123+845042 37 S
48247 21 032A   4171 G 20210426234527410 17 25 1626389+854492 37 S
48247 21 032A   4171 G 20210426234529313 17 25 1639247+865244 37 S
48247 21 032A   4171 G 20210426234531368 17 25 1708897+880250 37 S
48247 21 032A   4171 G 20210426234533562 17 25 1904823+890774 37 S
48247 21 032A   4171 G 20210426234535417 17 25 0012680+891213 37 S
48247 21 032A   4171 G 20210426234536412 17 25 0140614+884776 37 S
48247 21 032A   4171 G 20210427012236606 17 25 0950594+181550 37 S
48247 21 032A   4171 G 20210427012237556 17 25 0949733+182353 37 S
48247 21 032A   4171 G 20210427012239706 17 25 0947801+184122 37 S
48247 21 032A   4171 G 20210427012242508 17 25 0945280+190399 37 S
48247 21 032A   4171 G 20210427012246114 17 25 0942036+193274 37 S
48247 21 032A   4171 G 20210427012250811 17 25 0937800+200940 37 S
48247 21 032A   4171 G 20210427012254816 17 25 0934185+203982 37 S
48247 21 032A   4171 G 20210427012256865 17 25 0932341+205501 37 S
48247 21 032A   4171 G 20210427012301613 17 25 0928045+212961 37 S
48247 21 032A   4171 G 20210427012306461 17 25 0923668+220394 37 S

Regards,
    Cees
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Received on Tue Apr 27 2021 - 14:39:09 UTC

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