[amsat-bb] AMSAT-OSCAR 91 identified

[Ray Hoad]

It’s a done deal! Tonight I'll send them out.

Ray Hoad
WA5QGD
Orbital Elements Manager

Go for it.  I just notified JSpOC to name catalog 43017 as AO-91.

Jerry Buxton, NØJY

On 11/29/2017 16:07, Ray Hoad wrote:
> If all of you are OK with Object 43017 as AO-91, I will make the change
> Thursday. 11-30-2017.
>
> Ray Hoad
> WA5QGD
> Orbital Elements Manager
>
>
> -----Original Message-----
> From: Alan [mailto:wa4sca at gmail.com] 
> Sent: Wednesday, November 29, 2017 12:52
> To: 'Nico Janssen' <hamsat at xs4all.nl>; 'AMSAT bbs' <amsat-bb at amsat.org>;
> 'Ray Hoad' <ray.hoad at mypbmail.com>
> Subject: RE: [amsat-bb] AMSAT-OSCAR 91 identified
>
> Nico,
>
> I get the same identification using a different technique.  While I haven't
> had time to characterize the AO-91 transmitter frequency dependence on
> temperature, in AO-85 is was about -62 Hz/degree C.  Looking at the changing
> temperatures, that converts to about the same value in AO-91.
>
> 73s,
>
> Alan
> WA4SCA
>
>
> <-----Original Message-----
> <From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Nico
> <Janssen
> <Sent: Wednesday, November 29, 2017 08:30 AM
> <To: AMSAT bbs <amsat-bb at amsat.org>; Ray Hoad
> <<ray.hoad at mypbmail.com>
> <Subject: [amsat-bb] AMSAT-OSCAR 91 identified
> <
> <All,
> <
> <Detailed doppler measurements show that AMSAT-OSCAR 91 (AO 91)
> <is object 43017, 2017-073E.
> <
> <There is a small frequency drift on the downlink of OSCAR 91. During
> <ascending passes, i.e. early afternoon passes from south to north, with
> <the satellite in full sunlight, the downlink shows a frequency drift of
> <about -19 Hz per minute.
> <
> <73,
> <Nico PA0DLO
> <
> <
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>
> _______________________________________________
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_______________________________________________
Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb