USA 276 and ISS close approach

From: Marco Langbroek via Seesat-l <>
Date: Wed, 7 Jun 2017 23:22:29 +0200
Hi all,

Ted already presented his analytical results on the close approach of USA 276 to
the ISS on June 3. I have now put up my results too, updated today with more

Note the diagrams which I added today, showing the "circling" of the ISS both
cross-track and along-track.

I find a slightly larger nominal approach distance than Ted does: 6.4 +- 2 km
(Ted found 4.4 km). That is stil quite close (and much closer than in initial
prognosis, which were based on a projected ISS orbit). It remained just outside
the 4 x 4 x 10 km safety box around ISS (this is also visualized in the blog post).

- Marco

Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.

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:
Twitter: _at_Marco_Langbroek
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Received on Wed Jun 07 2017 - 16:23:12 UTC

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