Re: Another Unknown, Lacrosse?

Björn Gimle (b_gimle@algonet.se)
Mon, 5 Oct 1998 21:35:28 +0200

>Very bright mag 2.5 to 3
>with a reddish tint, (similar to Lacrosse 3). N to S trajectory, almost
>identical trajectory to Cosmos 1677 but about 5 min. early. It passed
>below Bellatrix between Mirzam & Sirius.  I checked the Classfd.tle and
>Alldat.tle to mag 6.0 satellites and only found Cosmos 1677(10 day old
>
In a 30x40 deg.field, at 11:12 UT +/- 6 min, above mag.+8 (!) and
closer than 9999 km, using molczan.tle, SkyMap finds ten objects.

Only Cosmos 2347 is close in space and time.
Screen snapshot sent to Jim only.

Cosmos 2347      8.0  3.0  0.0  3.5 v
1 25088U 97079A   98274.18502890 -.00001774 +00000-0 -24368-4 0 04395=20
2 25088 065.0227 302.1322 0010734 272.2628 087.7241 15.52041145045921=20

This is one of the bright EORSATs, kept very close to a constant Mean
Motion, and about 30 min after #24670, Cosmos 2335, the other EORSAT in
operation currently. At your latitude though, you can't usually see them
close in time, since the orbit planes differ by 72 degrees in RAAN.
But when three EORSATs are in orbit together, a pair is usually in
the same plane.

Cosmos 2335      6.0  0.0  0.0  4.2 v
1 24670U 96069A   98274.15881616 -.00000284 +00000-0 +14853-6 0 09896
2 24670 065.0309 230.0766 0013158 292.7554 067.2199 15.52079502102216

Bjoern Gimle