MMS-SMART Satellite Bus
Data current as of 2026-07-20.
The MMS-SMART bus accounts for 4 cataloged objects, of which 4 are in orbit and 4 are active. Most are built by GSFC. The largest operator on this bus is NASA. All were launched in 2015.
4
In orbit
4
Active
4
Total launched
0
Reentered
MMS-SMART launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged MMS-SMART satellites.
| Manufacturer | GSFC |
|---|---|
| Purpose | Magnetospheric Research |
| Launch mass | 1360 kg |
| Dry mass | 1000 kg |
| Length | 1.2 m |
| Diameter | 3.6 m |
| Span | 112 m |
| Shape | Cylinder+antennae |
| Power | Solar cells, batteries |
| Propulsion | GSFC |
| Design life | 2.5 years |
| Equipment | see above |
| Typical orbit | 5088 min period, 72° inclination |
Top operators
Top countries
US 4
MMS-SMART satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| MMS 4 MMS 4 | 40485 | 2015-011D | GSFC | Mar 13, 2015 | 5088 min, 72.5° | Active | ◉ |
| MMS 3 MMS 3 | 40484 | 2015-011C | GSFC | Mar 13, 2015 | 5088 min, 72.5° | Active | ◉ |
| MMS 2 MMS 2 | 40483 | 2015-011B | GSFC | Mar 13, 2015 | 5088 min, 72.5° | Active | ◉ |
| MMS 1 MMS 1 | 40482 | 2015-011A | GSFC | Mar 13, 2015 | 5088 min, 72.5° | Active | ◉ |
Frequently asked questions
How many MMS-SMART satellites are there?
The catalog lists 4 objects built on the MMS-SMART bus. 4 are in orbit and 0 have reentered.
How many MMS-SMART satellites are in orbit?
4 MMS-SMART objects are currently in orbit, of which 4 carry an active status.
Who builds the MMS-SMART bus?
The MMS-SMART bus is most commonly built by GSFC.
When did the first MMS-SMART satellite launch?
The cataloged MMS-SMART satellites all launched in 2015.