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Prime Landing Sites for MER-A and MER-B
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Last Revision: 09/23/03
 (Original complete list of all considered sites may be accessed here).

FINAL SELECTIONS (announced 4/14/03)
MER-A
(Spirit)		 MER-B
(Opportunity)		 Location of Ellipse Center MOLA Elevation
at ellipse center (km)		 Ellipse (Margined 99%)
IAU 1991 IAU 2000 Size Orientation
Ellipse dimensions are given for for the actual launch date.
HEMATITE IN
TERRA MERIDIANI
Small-Scale Map
1000 x 557; 158 Kb 		Mid-Scale Map
3080 x 1714; 1028 Kb 		Large-Scale Map
4666 x 2598; 2127 Kb 		Interactive MOC Image Maps
Hema. West     Hema. East 		3D VRMLs
Hema. West     Hema. East
  TM20B3 1.98 S, 353.82 E 1.98 S, 354.06 E -1.44 81.5 km x 11.5 km 84.5°
GUSEV CRATER
Small-Scale Map
1000 x 847; 224 Kb 		Large-Scale Map
3058 x 2592; 1573 Kb 		Interactive MOC Image Map 3D VRML
EP55A3   14.59 S, 175.06 E 14.59 S, 175.30 E -1.91 81 km x 12 km 75°

BACKUP SITES
MER-A MER-B Location of Ellipse Center MOLA Elevation
at ellipse center (km)		 Ellipse
MDIM2 IAU 1991 Size Orientation
Ellipse dimensions are given for opening of launch window.
Ellipses are 4-7 km shorter and 3-5° counterclockwise in orientation at close of launch window.
ELYSIUM PLANITIA
Small-Scale Map
1000 x 472; 167 Kb 		Large-Scale Map
3467 x 1637; 2224 Kb 		   
  EP78B2 11.91 N, 236.1 W 11.73 N, 123.72 E -2.9 155 km x 16 km 94°
ISIDIS PLANITIA
Small-Scale Map
1280 x 422; 175 Kb 		Mid-Scale Map
2560 x 845; 661 Kb 		Large-Scale Map
5680 x 1874; 2264 Kb 		Interactive MOC Image Maps
Isidis West     Isidis East 		3D VRMLs
Isidis West     Isidis East
IP84A2   4.31 N, 271.97 W 4.22 N, 87.91 E -3.74 133 km x 16 km 88°
  IP96B2 4.31 N, 271.97 W 4.22 N, 87.91 E -3.74 136 km x 16 km 91°

PREVIOUS TOP CANDIDATE SITES
MER-A MER-B Location of Ellipse Center MOLA Elevation
at ellipse center (km)		 Ellipse
MDIM2 IAU 1991 Size Orientation
Ellipse dimensions are given for opening of launch window.
Ellipses are 4-7 km shorter and 3-5° counterclockwise in orientation at close of launch window.
ELYSIUM PLANITIA
Small-Scale Map
1000 x 472; 167 Kb 		Large-Scale Map
3467 x 1637; 2224 Kb 		   
  EP80B2 14.5 N, 244.63 W 114.32 N, 115.20 E -2.6 165 km x 15 km 95°
MELAS CHASMA
Small-Scale Map
1000 x 975; 235 Kb 		Large-Scale Map
2646 x 2581; 1461 Kb 		Interactive MOC Image Map 3D VRML
VM53A2   8.88 S, 77.48 W 8.75 S, 282.36 E -3.70 103 km x 18 km 80°
  VM53B2 8.88 S, 77.48 W 8.75 S, 282.36 E -3.70 105 km x 20 km 82°
ATHABASCA VALLIS
Small-Scale Map
1000 x 546; 136 Kb 		Large-Scale Map
3626 x 1980; 1211 Kb 		Interactive MOC Image Map 3D VRML
  EP49B2 8.92 N, 205.21 W 8.83 N, 154.67 E -2.64 152 km x 16 km 95°
EOS CHASMA
Small-Scale Map
1000 x 921; 396 Kb 		Large-Scale Map
1321 x 1217; 478 Kb 		Interactive MOC Image Map 3D VRML
VM41A2   13.34 S, 41.39 W 13.20 S, 318.46 E -3.85 98 km x 19 km 76°

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Webwork: Glenn Deardorff NAS Systems Division
Principle
Investigator:		 Dr. Virginia Gulick Center for Mars Exploration
Mars Surveyor Landing Sites Home Page