Re: Gorizont 17

Tiene Bauters (Tiene.Bauters@rug.ac.be)
Wed, 13 Jan 1999 19:26:46 +0100 (MET)

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>From: "Kurt Jonckheere" <kjon@mail.dma.be>
>Subject: Re: Gorizont 17
>Date: Wed, 13 Jan 99 18:38:00 PST
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>
>Rob Matson wrote about Gorizont 17 :
>> For those in California (and probably Arizona and New Mexico,
>> and maybe even Texas), you might give it a try tonite.  It
>> was already flashing brightly at 8:19pm PST (4:19 UT), and
>> had not diminished any by 9:10pm (when fog rolled in).
>> Gorizont 17, #19765
>> 89-004A 99-01-07 05:09:27.5  RM 1584.94 0.2 19 83.418  mag +4 --> inv
>
>89-  4 A 98-03-23 20:50:50.3 KJ  1010  2.0  12 84.2   Aff..A, mag +11,
>long max
>I observed this Gorizont in March 98.  It was pretty faint then, magnitude
>+11 at max,
>flashing with a long maximum of about 5 seconds en several secundary shorter
>flashes most about 20 seconds after the main maximum, some at other intervals.
>Rob probably again discovered the solar panel flashes.
>
>It hasn't been observed before, at least there are no reports about it in
>the PPAS.
>It is also mentioned in the observing program.
>
>>From only these two observations it seems that the period is going down right
>now, although more accurate observations are needed to confirm this.
>Such behaviour - acceleration of the rotation period - has been detected with
>other Gorizonts like Gorizont 23 = 91- 46 A = 21533.
>
>Who makes the next obs of these ?
>
>----
>On the evening of 6 January 1999, I also observed two Atlas Centaur
>rockets (used to launch Intelsats):
>
>72- 41 B = 6058 = Intelsat 4-5 Rkt was flashing from mag +6 to inv, the
>maxima were
>between +6 and +8.5, period was 25.42 seconds.
>
>76- 10 B = 8621 = Intelsat 4A1 Rkt was flashing with 144.0 seconds (+- 2
>seconds).
>I was only able to see two maxima because of wind and some clouds moving
>in.  The
>maxima also last for only some seconds.
>A look in the PPAS shows that this object hasn't been observed since the
>eighties.
>76- 10 B 82-05-30            PN                225
>76- 10 B 82-06-15            PN                206
>76- 10 B 83-01-14 02:02      PN                165
>
>regards,
>
>Kurt  (kjon@mail.dma.be)
>