Re: Any idea when GPS 3 burns will occur?

From: Robert Holdsworth via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 19 Dec 2018 03:40:48 +1300
Scrubbed owing to an issue with the first stage. Aiming for another attempt
Wednesday 1407 UTC.
Robert

On Wed, 19 Dec 2018, 03:24 Robert Holdsworth <robbonz_at_gmail.com wrote:

> Projected launch time now 1434 UTC in the hope that upper level winds will
> reduce sufficiently for launch. Window closes at 1437.
>
> Robert
>
> On Tue, 18 Dec 2018, 08:52 C. Bassa via Seesat-l <seesat-l_at_satobs.org
> wrote:
>
>> On Mon, Dec 17, 2018 at 5:43 PM ronlee--- via Seesat-l
>> <seesat-l_at_satobs.org> wrote:
>> > 18 December 2018 launch on SpaceX Falcon 9.   Is there any information
>> on
>> > when burns will occur?
>>
>> The SpaceX timeline is published, see this tweet:
>> https://twitter.com/TGMetsFan98/status/1074742779216097286
>>
>> SECO-1 is at 00:08:16 after launch, with the second burn starting at
>> 01:08:51 and ending at 01:09:37 after launch. Spacecraft separation
>> will be at 01:56:17. These timing suggest ~1 hour coast in a parking
>> orbit, then a single burn into a transfer orbit, presumably with a
>> ~20200 km apogee. There is a de-orbit NOTAM published, located in the
>> South Atlantic, West of Africa, which is consistent with this launch
>> profile, where the transfer orbit has its perigee at approximately 25
>> deg South latitude. During spacecraft separation, and the subsequent
>> CCAM/de-orbit burn, the stack is high above the Pacific between Hawaii
>> and the US. Only Alaska may have visibility of the CCAM/de-orbit burn.
>>
>> Regards,
>>     Cees
>> _______________________________________________
>> Seesat-l mailing list
>> http://mailman.satobs.org/mailman/listinfo/seesat-l
>>
>
_______________________________________________
Seesat-l mailing list
http://mailman.satobs.org/mailman/listinfo/seesat-l
Received on Tue Dec 18 2018 - 08:41:33 UTC

This archive was generated by hypermail 2.3.0 : Tue Dec 18 2018 - 14:41:33 UTC