Re: Launch window question

From: Luigi Maniero via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 28 May 2020 11:46:57 +0200
Meteo?
--
Luigi Maniero
Castello 2859
30122 VENEZIA (VE)
+39 320 6394968
+39 041 4766874
luigi.maniero.eu_at_gmail.com


Il giorno gio 28 mag 2020 alle ore 11:18 twcc--- via Seesat-l <
seesat-l_at_satobs.org> ha scritto:

> I had an initial question rattling in my head of how come the next attempt
> is not a multiple of approx 90-mins based on the ISS orbit time as
> simplistically the Dragon is on catch-up,  Then I realised the precession
> around the globe means they have to coordinate launch with ISS position,
> say, 24 hours later.  I guess there are also local (Florida) issues with
> day/night launch times plus maybe NASA want the meet up to be over a
> specific part of the globe.
>
> Does anyone know the proper answer?
>
> Tim Collins
> UK (for the foreseeable future)
>
> -----Original Message-----
> From: Seesat-l <seesat-l-bounces+twcc=btinternet.com_at_satobs.org> On Behalf
> Of Marco Langbroek via Seesat-l
> Sent: 28 May 2020 09:45
> To: satelliet lijst (SeeSat) <SeeSat-L_at_satobs.org>
> Subject: Launch window question
>
>
> Question to the hive mind...
>
> Does anybody know why there is a 3-day gap between yesterday and the next
> launch opportunity for Crew Dragon, instead of 1 day?
>
> What considerations are in play there? Also because the other backup date
> is
> one day after May 30, not 3 days. So why the 3 days between first and
> second
> attempt, and then just 1 day between second and third attempt?
>
> - Marco
>
> -----
> Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
> e-mail: sattrackcam_at_langbroek.org
>
> Station (b)log: http://sattrackcam.blogspot.com
> Twitter: _at_Marco_Langbroek
> -----
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Received on Thu May 28 2020 - 04:50:06 UTC

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