Navigation glitch postpones commercial spacecraft's docking with International Space Station

Astronauts will try to grab capsule on Saturday

Published On: Sep 23 2013 06:47:23 AM EDT   Updated On: Sep 23 2013 11:33:15 AM EDT

A new commercial spaceship will wait all week before aiming again for the International Space Station.

Orbital Sciences Corp.'s Cygnus capsule was supposed to arrive Sunday. But the rendezvous was aborted because of a discrepancy in navigation data between the two vessels.

The Virginia company has developed and tested a software repair to sync up the two sets of GPS data. But on Monday, NASA and Orbital Sciences agreed to delay this second delivery attempt until at least Saturday. That's because of the time needed to come up with the fix and an impending manned mission from Kazakhstan.

Three astronauts are scheduled to blast off on a Russian rocket Wednesday and arrive at the space station later in the day.

This is the maiden voyage of the Cygnus.