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Another Opportunity To Go Roving Approaches
Pasadena - Jan 19, 2004 With barely a week before reaching Mars, NASA's Opportunity spacecraft adjusted its trajectory, or flight path, today for the first time in four months. The spacecraft carries a twin to the Spirit rover, which is now exploring Mars' Gusev Crater. It will land halfway around Mars, in a region called Meridiani Planum, on Jan. 25 (Universal Time and EST; Jan. 24 at 9:05 p.m., PST). For today's trajectory correction maneuver, engineers at NASA's Jet Propulsion Laboratory, Pasadena, Calif., commanded Opportunity at 6 p.m. PST to fire thrusters in a sequence carefully calculated by the mission's navigators. The spacecraft is spinning at two rotations per minute. The maneuver began with a 20-second burn in the direction of the axis of rotation, then included two 5-second pulses perpendicular to that axis. "Looks like we got a nice burn out of Opportunity," said JPL's Jim Erickson, mission manager. "We're on target for our date on the plains of Meridiani next Saturday with a healthy spacecraft." Before the thruster firings, Opportunity was headed for a landing about 384 kilometers (239 miles) west and south of the intended landing site, said JPL's Christopher Potts, deputy navigation team chief for the Mars Exploration Rover Project. The maneuver was designed to put it on course for the target. Opportunity's schedule still includes two more possible trajectory correction maneuvers, on Jan. 22 and Jan. 24, but the maneuvers will only be commanded if needed. As of 5 a.m. Sunday, PST, Opportunity will have traveled 444 million kilometers (276 million miles) since its July 7 launch, and will have 12.5 million kilometers (7.8 million miles) left to go. Community Email This Article Comment On This Article Related Links Mars at JPL MERs at Cornell SpaceDaily Search SpaceDaily Subscribe To SpaceDaily Express Mars News and Information at MarsDaily.com Lunar Dreams and more
Spirit Heading To 'Home Plate'
Pasadena CA (JPL) Jan 09, 2006Last week Spirit completed robotic-arm work on "El Dorado." The rover used all three of its spectrometers plus the microscopic imager for readings over the New Year's weekend. |
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