MPF Satellite Bus
Data current as of 2026-07-21.
The MPF bus accounts for 3 cataloged objects, of which 0 are in orbit and 0 are active. 3 have reentered. Most are built by JPL. The largest operator on this bus is NASA. The first launched in 1996, the most recent in 2003.
0
In orbit
0
Active
3
Total launched
3
Reentered
MPF launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged MPF satellites.
| Manufacturer | JPL |
|---|---|
| Purpose | Mars Lander / Rover |
| Launch mass | 174 kg |
| Dry mass | 174 kg |
| Length | 1.4 m |
| Diameter | 1 m |
| Span | 1.4 m |
| Shape | Box + 6 Wheel + 2 Ant |
| Power | Solar cells, batteries (cruise stage); fixed solar arrays, batteries (rover) |
| Propulsion | ? |
| Design life | 3 month (design), still operational (#2) |
| Equipment | see above |
Top operators
Top countries
US 3
MPF satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| MARS EXPLORER ROVER B Opportunity Rover | 27849 | 2003-032A | JPL | Jul 8, 2003 | 88 min, 29.4° | Reentered | ◉ |
| MARS EXPLORER ROVER A Spirit Rover | 27827 | 2003-027A | JPL | Jun 10, 2003 | · | Reentered | ◉ |
| MARS PATHFINDER Sagan Memorial Station | 24667 | 1996-068A | JPL | Dec 4, 1996 | · | Reentered | ◉ |
Frequently asked questions
How many MPF satellites are there?
The catalog lists 3 objects built on the MPF bus. 0 are in orbit and 3 have reentered.
How many MPF satellites are in orbit?
0 MPF objects are currently in orbit, of which 0 carry an active status.
Who builds the MPF bus?
The MPF bus is most commonly built by JPL.
When did the first MPF satellite launch?
The first cataloged MPF satellite launched in 1996, and the most recent in 2003.