Orbiter enters, then exits, standby safe mode

Jul 16, 2012 By Guy Webster
NASA's Mars Odyssey spacecraft passes above Mars' south pole in this artist's concept illustration. The spacecraft has been orbiting Mars since October 24, 2001. Credit: NASA/JPL

(Phys.org) -- NASA's Mars Odyssey orbiter experienced about 21 hours in a reduced-activity precautionary status ending at about 10 a.m. PDT (1 p.m. EDT) on Thursday, July 12.

The orbiter put itself in the precautionary, Earth-pointed status called safe mode, at about 1 p.m. PDT (4 p.m. EDT) on July 11, as it finished a maneuver adjusting, or trimming, its orbit. Odyssey's computer did not reboot, so diagnostic information was subsequently available from the spacecraft's onboard memory. Based on analysis of that information, the mission's controllers sent commands yesterday morning taking Odyssey out of safe mode and reorienting it to point downward at Mars.

"We are on a cautious path to resume Odyssey's science and relay operations soon," said Gaylon McSmith, Odyssey project manager at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "We will also be assessing whether another orbit trim maneuver is warranted."

The thruster burn for Wednesday's orbit-trim maneuver lasted 1.5 seconds, as planned, which was shorter than any previous orbit-trim maneuver of the mission's decade at Mars. The spacecraft's onboard capability for maintaining orientation during the burn put unexpectedly high demand on a reaction wheel in the attitude control system, which prompted the change to safe mode.

NASA launched the on April 7, 2001, and it arrived at Mars Oct. 24, 2001. It has worked at Mars longer than any other in history. Besides conducting its own scientific observations, it serves as a communication relay for robots on the . NASA plans to use Odyssey and the newer as communication relays for the Mars mission during the landing and Mars-surface operations of its Curiosity rover.

Explore further: SpaceX launches supplies to space station (Update)

More information: mars.jpl.nasa.gov/odyssey

add to favorites email to friend print save as pdf

Related Stories

Mars Odyssey orbiter out of precautionary 'safe mode'

Jun 20, 2012

(Phys.org) -- NASA's Mars Odyssey orbiter has been taken out of a protective status called safe mode. Remaining steps toward resuming all normal spacecraft activities will probably be completed by next week.

Test of spare wheel puts Orbiter on path to recovery

Jun 15, 2012

(Phys.org) -- In a step toward returning NASA's Mars Odyssey orbiter to full service, mission controllers have tested a spare reaction wheel on the spacecraft for potential use with two other reaction wheels ...

Mars Odyssey Orbiter is back in service

Jun 28, 2012

(Phys.org) -- NASA's Mars Odyssey orbiter has resumed its science observations and its role as a Mars rover's relay, thanks to a spare part that had been waiting 11 years to be put to use.

Mars Odyssey Orbiter Puts Itself Into Safe Standby

Dec 01, 2009

(PhysOrg.com) -- NASA's Mars Odyssey orbiter put itself into a safe standby mode on Saturday, Nov. 28, and the team operating the spacecraft has begun implementing careful steps designed to resume Odyssey's ...

Recommended for you

NASA's space station Robonaut finally getting legs

6 hours ago

Robonaut, the first out-of-this-world humanoid, is finally getting its space legs. For three years, Robonaut has had to manage from the waist up. This new pair of legs means the experimental robot—now stuck ...

Sun emits a mid-level solar flare

Apr 18, 2014

The sun emitted a mid-level solar flare, peaking at 9:03 a.m. EDT on April 18, 2014, and NASA's Solar Dynamics Observatory captured images of the event. Solar flares are powerful bursts of radiation. Harmful ...

Impact glass stores biodata for millions of years

Apr 18, 2014

(Phys.org) —Bits of plant life encapsulated in molten glass by asteroid and comet impacts millions of years ago give geologists information about climate and life forms on the ancient Earth. Scientists ...

The importance of plumes

Apr 18, 2014

The Hubble Space Telescope is famous for finding black holes. It can pick out thousands of galaxies in a patch of sky the size of a thumbprint. The most powerful space telescope ever built, the Hubble provided ...

User comments : 0

More news stories

NASA's space station Robonaut finally getting legs

Robonaut, the first out-of-this-world humanoid, is finally getting its space legs. For three years, Robonaut has had to manage from the waist up. This new pair of legs means the experimental robot—now stuck ...

Cosmologists weigh cosmic filaments and voids

(Phys.org) —Cosmologists have established that much of the stuff of the universe is made of dark matter, a mysterious, invisible substance that can't be directly detected but which exerts a gravitational ...

Ex-Apple chief plans mobile phone for India

Former Apple chief executive John Sculley, whose marketing skills helped bring the personal computer to desktops worldwide, says he plans to launch a mobile phone in India to exploit its still largely untapped ...

Filipino tests negative for Middle East virus

A Filipino nurse who tested positive for the Middle East virus has been found free of infection in a subsequent examination after he returned home, Philippine health officials said Saturday.

Egypt archaeologists find ancient writer's tomb

Egypt's minister of antiquities says a team of Spanish archaeologists has discovered two tombs in the southern part of the country, one of them belonging to a writer and containing a trove of artifacts including reed pens ...

Airbnb rental site raises $450 mn

Online lodging listings website Airbnb inked a $450 million funding deal with investors led by TPG, a source close to the matter said Friday.