Re: USA 276 approaching ISS again

From: Robert Holdsworth via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 14 Jul 2017 03:42:49 +1200
Excellent pass with separation of about two minutes is predicted for New
Zealand this evening our time commencing 0649 UTC. I will probably be
clouded out but if there are other observers elsewhere in the country on
this list they might want to take a look.

Robert
Wainuiomata
New Zealand.

On 13 Jul 2017 04:16, "Marco Langbroek via Seesat-l" <seesat-l_at_satobs.org>
wrote:

>
> Hi all,
>
> Tomorrow afternoon, USA 276 will again make a series of close approaches
> to the
> ISS, perhaps to as close as 24 km.
>
> The following predictions are based on this elset:
>
> USA 276
> 1 42689U 17022A   17190.03474342 0.00004845  00000-0  65965-4 0    05
> 2 42689  50.0454 286.7139 0019557 288.5093  71.3751 15.56610866    05
>
> ...which I constructed from Alberto Rango's recent observations.
>
> Close approaches to within 500 km:
>
> DATE            UT              KM
> 7/13/2017       00:35:52        476.7
> 7/13/2017       01:24:02        480.8
> 7/13/2017       02:08:26        405.2
> 7/13/2017       02:56:18        409.8
> 7/13/2017       03:41:01        333.7
> 7/13/2017       04:28:35        338.8
> 7/13/2017       05:13:36        262.2
> 7/13/2017       06:00:53        267.8
> 7/13/2017       06:46:10        190.6
> 7/13/2017       07:33:11        196.8
> 7/13/2017       08:18:45        119.1
> 7/13/2017       09:05:30        126.1
> 7/13/2017       09:51:20         47.6
> 7/13/2017       10:37:49         56.2
> 7/13/2017       11:23:55         24.1
> 7/13/2017       12:10:08         23.7
> 7/13/2017       12:56:30         95.6
> 7/13/2017       13:42:28         90.0
> 7/13/2017       14:29:05        167.2
> 7/13/2017       15:14:49        160.5
> 7/13/2017       16:01:40        238.7
> 7/13/2017       16:47:09        231.5
> 7/13/2017       17:34:15        310.3
> 7/13/2017       18:19:31        302.6
> 7/13/2017       19:06:50        381.9
> 7/13/2017       19:51:52        373.7
> 7/13/2017       20:39:25        453.5
> 7/13/2017       21:24:14        444.9
>
> There is some leeway in both time and approach distance, which can have an
> error
> up to a factor 2.
>
> European observers might be able to spot ISS and USA 276 simultaniously in
> the
> sky in the early morning of the coming night 12-13 July.
>
> - Marco
>
>
>
> -----
> Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
> e-mail: sattrackcam_at_langbroek.org
>
> Cospar 4353 (Leiden):     52.15412 N, 4.49081 E (WGS84), +0 m ASL
> Cospar 4355 (Cronesteyn): 52.13878 N, 4.49937 E (WGS84), -2 m ASL
> Station (b)log: http://sattrackcam.blogspot.com
> Twitter: _at_Marco_Langbroek
> -----
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Received on Thu Jul 13 2017 - 10:43:37 UTC

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