#25545 Obs

scribble (scribble@eisa.net.au)
Mon, 23 Nov 1998 22:33:48 +1100

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Greetings,

11:17 UTC

Proton rocket 3rd stage observed on P.M. pass over Melbourne.  Appeared =
to be on time, to within a second or two of followig OIG elset.  I was =
quite suprised to see how bright it appeared, as the illumination =
geometry was less than ideal. =20
Photometric period measuements taken, 30 cycles over 2:05.84, very =
pronouced minimum, tending toward invisible, on a fairly sinusoudal =
light curve. Period at approx 4.2 seconds, does not concur with earlier =
observation of 16 hours ago.  Is it possible for an objects rotation to =
increase this much, in that given time period, could there be some =
venting occouring, perhaps effects of atmospheric drag, or are my =
measurements this far out?

SL-13 R/B
1 25545U 98067B 98326.87390775 .01553580 11796-4 50470-3 0 260
2 25545 51.6065 154.3088 0089605 96.8719 264.2504 16.15470710 424


Jason Gibson
Melbourne Australia
37.9803 S    145.0623 E    40m=20
 =20

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Greetings,
 
11:17 UTC
 
Proton rocket 3rd stage observed on = P.M. pass=20 over Melbourne.  Appeared to be on time, to within a second or two = of=20 followig OIG elset.  I was quite suprised to see how bright it = appeared, as=20 the illumination geometry was less than ideal. 
Photometric period measuements = taken, 30 cycles=20 over 2:05.84, very pronouced minimum, tending toward invisible, on a = fairly=20 sinusoudal light curve. Period at approx 4.2 seconds, does not concur = with=20 earlier observation of 16 hours ago.  Is it possible for an objects = rotation to increase this much, in that given time period, could there = be some=20 venting occouring, perhaps effects of atmospheric drag, or are my = measurements=20 this far out?
 
SL-13 = R/B
1 25545U 98067B = 98326.87390775 .01553580 11796-4 50470-3 0 260
2 25545 = 51.6065=20 154.3088 0089605 96.8719 264.2504 16.15470710 = 424
 
 
Jason Gibson
Melbourne = Australia
37.9803=20 S    145.0623 E    40m
 =20
 
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