Later they will breathe pure oxygen. On Tuesday Discovery will approach the space telescope with a series of burns to match its orbit. Brown and Kelly will maneuver the orbiter to a point directly beneath Hubble, then move upward toward it. There, it can be rotated and tilted to enable space-walking astronauts to better access its equipment bays. Discovery is in an orbit with a high point of 367 statute miles and a low point of 352 miles.
All systems are in excellent condition.
The crew successfully completed checkout operations today, in preparation for the rendezvous with Hubble on Tuesday afternoon. The crew will soon go to sleep and will begin rendezvous activities after their wakeup routine tomorrow. The Shuttle navigators have put Discovery into an orbit that will bring it very close to Hubble at just the correct time. A rendezvous burn will be made later tonight to stop this rate of approach in preparation for manual proximity operations tomorrow. We have encountered only a few minor problems.