[amsat-bb] Celestrak BY70-1 keps

Nico Janssen hamsat at xs4all.nl
Tue Jan 31 19:35:26 UTC 2017


Unfortunately it is not that simple. That '+/- 8 hours' should actually
read '+/- 8 days'. It is simply impossible to predict the decay time with
such a high accuracy so far in advance.

73,
Nico PA0DLO

On 31-01-17 17:48, Joe wrote:
> AWESOME!!!!!
>
> I Like that +/- 8 hours, 16 hour window, thats quite a few orbits.
>
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 1/31/2017 10:11 AM, mac cody wrote:
>> Perhaps this might be useful:
>> >From Satview.org
>> Forecast of Reentry Location
>> Update Tue 31-Jan-2017 14:13 UTC
>> http://www.satview.org/spacejunk.php?sat_id=41909U
>>
>> 73,
>>
>> Mac / AE5PH
>> --------------------------------------------
>> On Tue, 1/31/17, Joe <nss at mwt.net> wrote:
>>
>>   Subject: Re: [amsat-bb] Celestrak BY70-1 keps
>>   To: amsat-bb at amsat.org
>>   Date: Tuesday, January 31, 2017, 9:36 AM
>>     would he be the one to
>>   know as the time gets closer when re-entry would
>>   likely happen?
>>     Joe WB9SBD
>>   Sig
>>   The Original Rolling Ball Clock
>>   Idle Tyme
>>   Idle-Tyme.com
>>   http://www.idle-tyme.com
>>   On 1/31/2017 9:16 AM, mac cody wrote:
>>   > I received another email from Dr. Kelso
>>   this morning asking if I would like to have the BY70-1 TLEs
>>   also placed in the Amateur Radio listing as well.  I told
>>   him that if he could do so, that would be great. I'm
>>   sure it will be taken care of later today.
>>   >
>>   > 73,
>>   >
>>   > Mac / AE5PH
>>   >
>>   --------------------------------------------
>>   > On Mon, 1/30/17, Mac A. Cody <maccody at att.net>
>>   wrote:
>>   >
>>   >   Subject: Re: [amsat-bb]
>>   Celestrak BY70-1 keps
>>   >   To:
>>   "Paul Stoetzer" <n8hm at arrl.net>
>>   >   Cc: "amsat-bb at amsat.org"
>>   <amsat-bb at amsat.org>
>>   >   Date: Monday, January 30,
>>   2017, 10:24 PM
>>   >
>>   >   Well, I suppose you could
>>   >   send in a request to Dr.
>>   Kelso, like I did. :)
>>   >
>>   >   73,
>>   >
>>   >   Mac / AE5PH
>>   >
>>   >   On
>>   >   01/30/2017 12:35 PM, Paul
>>   Stoetzer wrote:
>>   >   >
>>   I'm not sure why it also shouldn't
>>   >   be in amateur.txt.
>>   CubeSat.txt is
>>   >   > OK,
>>   >   but it's an added step
>>   for some uses.
>>   >   >
>>   >   > 73,
>>   >   >
>>   >   > Paul, N8HM
>>   >   >
>>   >   > On Mon, Jan 30, 2017
>>   >   at 1:27 PM, mac cody <maccody at att.net>
>>   >   wrote:
>>   >   >> All,
>>   >   >>
>>   >   >> I received a
>>   >   nice reply from Dr. Kelso to
>>   the email I sent him
>>   >   yesterday.  He has added the
>>   BY70-1 TLEs to the CubeSats
>>   >   listing (http://www.celestrak.com/NORAD/elements/cubesat.txt).
>>   >   This file should be available
>>   to most software tracking
>>   >   applications (at least is is
>>   available as a source in
>>   >   AmsatDroid Free) and will be
>>   updated more frequently
>>   >   compared to the BY70-1 TLEs
>>   provided through AMSAT.
>>   >   >>
>>   >   >> 73,
>>   >   >>
>>   >   >> Mac Cody /
>>   >   AE5PH
>>   >   >>
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