Mars Climate Orbiter has been cleared for launch Friday at 1.45pm local time via a Boeing Delta2. The
software controlling the spacecraft's electrical system, which
caused a one-day launch delay, has been reviewed and a
recommended change was made Thursday. The launch window closes at 2:52pm EST.
The launch weather officer predicts a 30-percent chance of
not meeting the launch weather criteria on Friday. There is the
possibility of an isolated shower in the vicinity and some
concern over clouds in the area or in the Delta's flight path at
the time of launch.
When it first arrives at the red planet, Mars Climate Orbiter
will be used primarily to support its companion Mars Polar Lander
spacecraft, planned for launch on Jan. 3, 1999. After that, the
Climate Orbiter's instruments will monitor the Martian atmosphere
and image the planet's surface on a daily basis for one Martian year, the
equivalent of two Earth years. During this time, the spacecraft
will observe the circulation of atmospheric dust and water vapor,
as well as characterize seasonal changes on the surface.
NASA TV Coverage
NASA Television coverage of the launch will begin at 12:30
p.m. EST and will be shared with coverage of international space
station mission activities.
Audio Telephone Coverage Available continuously on the
following phone numbers: (407) 867-1260, (407) 867-7135, (407)
867-4003 and (407) 867-4920.
Mars 98 Overview – Detailed JPL universe Report
