Sunday, June 11, 2006

Catched a mag -1.5 Lacrosse 2 flare



The haze in the sky was less last night than previous nights. At 21:54:48 UTC I cached Lacrosse 2 (1991-017A, #21147) flaring too about mag. -1.5, while the camera was open. I produced the very nice pcture above, as well as some good positional results. Satellite movement is from lower left to upper right.

The trail is very well defined on the image, while overall star positional inaccuuracy is only 22". Relative to Mike's 1-day old elset 06159.92449946, delta T is +0.02 resp. -0.01 seconds. The crosstrack error is 0.05 resp. 0.06 degrees. This is larger than usual and given the very fine results overall, this cross-track deviation must be a real deviation and not a measurement error imho.

Lacrosse 2
1 21147U 91017A 06159.92449946 0.00000080 00000-0 11747-4 0 06
2 21147 67.9874 90.2300 0005500 236.6210 123.3790 14.75395581 05

LAST OB : 161

STA____ AZ____EL_____ASP____XTRK__deltaT Perr
4353___348.35__73.19__76.50__0.05__0.02___0.050
4353_____3.37__78.76__82.47__0.06_-0.01___0.057

sum 0.05354

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