Re:acceleration of 91-19 B = 21153 and 93- 36 B = 22676 ?
Kurt Jonckheere (kjonckheere@unicall.be)
Thu, 30 Oct 1997 21:54:10 GMT
hello,
91- 19 B = 21153 = SL-8/C1 rocket
This evening I had a nice pass of 91- 19 B. The measured period
was about 18 seconds again (with some inaccuracies because of
synodic effect). So we defenitely need more observations to see
if the acceleration has halted or not.
>ALL OBSERVATIONS OF THIS OBJECT ARE VERY MUCH APPRECIATED !!
yesterday I wrote :
>93- 36 B = 22676 = SL-8/C1 rocket
>Maybe the period is about 18 seconds ? (3 x 18 = 54 sec), which
>would also mean an acceleration.
This evening I had a high pass and could determine a period of 36s with
some secundary maxima (sm), so yesterday I probably so such a secundary
maxima between the clouds. It is also not clear if this one is
still accelerating or not. TO BE OBSERVED !
Jan Vansteelandt observed it at about 37 seconds this evening.
period
91- 19 B 97-10-18 19:08:35 LB 72.3 0.5 1 72.3 AA, mag 3->inv
91- 19 B 97-10-20 18:20:22 LB 62.9 0.5 1 62.9 AA, mag 4->inv
91- 19 B 97-10-27 17:57:12 LB 89.9 0.5 4 22.5 AA, mag 4->inv
91- 19 B 97-10-27 17:58 KJ 319.1 0.5 14 22.8 mag 4.5->inv
91- 19 B 97-10-28 18:25:24 LB 113.9 0.5 6 19.0 AA, mag 3->inv
91- 19 B 97-10-29 18:53 KJ 142.4 0.8 8 17.8 mag +4.5->inv
91- 19 B 97-10-29 18:55 KJ 148.6 0.8 8 18.6 synodic effect
91- 19 B 97-10-30 17:36:00.4 KJ 179.8 0.5 10 18.0 FF, syn eff
91- 19 B 97-10-30 17:38:50.9 KJ 182.2 1.0 10 18.2 AA, syn eff.
93- 36 B 97-10-30 18:35 KJ 217.5 1.5 6 36.3 sm, first FF, later MM
93- 36 B 97-10-30 18:35 JVS 111.3 1.5 3 37.1
happy observing,
Kurt Jonckheere