New Bright Unid (This mail is UNCLASSIFIED)

Brierley David (DMBRIERLEY@dera.gov.uk)
Thu, 17 Jun 1999 11:28:31 +0100

Dear SeeSaters

On June 10, while looking for 68-106B in the NW sky, I saw an unusually
bright slow-moving satellite.  It seemed worth following, and I made
these observations.  It reached mag +5.8 steady in the west.

IntlId SiteYYMMDDHHMMSSss  Sss  TCHHMMmm   DDMMm   Mm E
9909901267599061022514415  010  12104949  +43069   15 5
9909901267599061022524694  010  12111780  +41570   2  5
9909901267599061022555540  010  12123919  +34483   2  5
9909901267599061022573582  010  12131722  +29061   2  5
9909901267599061022593890  010  12135724  +21012   2  5
9909901267599061023020305  010  12143548  +10575   3  5

The object was not in Mike McCants' current elset file.  The inclination
seemed to be near 63.4, so I fixed on that popular value, and allowed
the other elements to vary.  It turned out to have been near apogee,
height 3100km, with a standard mag full-phase of +2.5.  The orbit
enabled me to find the object again last night (June 16) only half a
minute early:

9909901267599061622270576  010  12112313  +35065   2  5
9909901267599061622281112  010  12114810  +32328   15 5
9909901267599061622324683  010  12131750  +17180   1  5
9909901267599061622343492  010  12134532  +10206   15 5
9909901267599061622371601  010  12142013  +00060   1  5

Peter Wakelin also saw the same object the previous night:
9909901201899061521485221  01   12142165  +1627   02  4
9909901201899061521504329  01   12144710  +0809   02  4
9909901201899061521582743  01   12155980  -1945   02  4

I have computed the following precise orbit.  Can someone please turn it
into NORAD form?

9909901 99167.90066188 0.00000000
  63.4395  65.9713 0.0234713 291.3036  67.5185  9.69752369

David M Brierley
Malvern, Worcestershire, UK
Station 2675, 52.1358N 2.3264W 70m
dmbrierley@compuserve.com


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