Mars Exploration Rover — B
NASA/JPL · NASA Jet Propulsion Laboratory
Mass
185 kgas of [1]Landed
January 25, 2004Landing Site
Eagle Crater, Meridiani PlanumOperational
5,111 sols (14 years, ~10 months)as of [1]Last contact June 10, 2018, following a planet-encircling dust storm; mission declared over February 13, 2019Launch
July 7, 2003
Landing
January 25, 2004
Eagle Crater, Meridiani Planum
Mission End
June 10, 2018
5,111 sols (14 years, ~10 months)
| Agency | NASA/JPL |
| Operator | NASA Jet Propulsion Laboratory |
| Vehicle Type | Rover |
| Power System | Solar panels + lithium-ion battery |
| Primary Contractor | NASA Jet Propulsion Laboratory |
| Instruments | 5 science instruments + RAT drill + Magnet arraysas of [1]Same instrument suite as Spirit: Pancam, Mini-TES, Mössbauer, APXS, MI |
| Landing Site | Eagle Crater, Meridiani Planum1.9462°S 354.4734°E |
| Distance Traveled | 45.16 kmas of [1]Mars distance record for a surface vehicle; final odometry at last contact |
Traversed 45.16 km across Meridiani Planum — a world distance record for surface vehicles. Found sedimentary evidence of standing liquid water at Eagle Crater. Reached Endeavour Crater rim in 2011, 9 km from landing site. Contact lost in a 2018 global dust storm after 14+ years of operations.
“Opportunity's odometer read 45.16 km (28.06 miles) at the last contact on June 10, 2018.”
See how Opportunity (MER-B) stacks up side-by-side against other Mars surface vehicles.