Update your Keps - ISS orbit modified

If you have not updated your Keplerian Elements recently, your tracking of the ISS may be off.

In preparation of the Space Shuttle's Return to Flight, the ISS received one final re-boost to increase the Station's altitude for its upcoming rendezvous with Space Shuttle Discovery.

Last week the engines of a Progress spacecraft docked to the Station were commanded to burn for 7 minutes and 20 seconds, boosting the altitude of the Station nearly 4 miles.

This second and final re-boost puts the Station into position for rendezvous opportunities beginning on the third flight day during most of Discovery's July 13-31 launch window.

ANS thanks Jacques van Oene for the above information

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