Names | MMS |
---|---|
Mission type | Magnetosphere research |
Operator | NASA |
COSPAR ID | 2015-011A 2015-011B 2015-011C 2015-011D |
SATCAT no. | 40482 40483 40484 40485 |
Website | MMS [1] |
Mission duration | Planned: 2 years Elapsed: 9 years, 9 months, 9 days |
Spacecraft properties | |
Manufacturer | Goddard Space Flight Center |
Launch mass | 1,360 kg (3,000 lb) |
Dimensions | Stowed: 3.5 × 1.2 m (11.5 × 3.9 ft) Deployed: 112 × 29 m (367 × 95 ft) |
Power | 318 watts |
Start of mission | |
Launch date | 13 March 2015, 02:44 UTC |
Rocket | Atlas V 421 AV-053 |
Launch site | Cape Canaveral, SLC-41 |
Contractor | United Launch Alliance |
Entered service | September 2015 |
End of mission | |
Last contact | 2040 (planned) |
Orbital parameters | |
Reference system | Geocentric orbit |
Regime | Highly elliptical orbit |
Perigee altitude | 2,550 km (1,580 mi) |
Apogee altitude | Day phase: 70,080 km (43,550 mi) Night phase: 152,900 km (95,000 mi) |
Inclination | 28.0° |
Large Strategic Science Missions Heliophysics Division |
The Magnetospheric Multiscale (MMS) Mission is a NASA robotic space mission to study the Earth's magnetosphere, using four identical spacecraft flying in a tetrahedral formation.[1] The spacecraft were launched on 13 March 2015 at 02:44 UTC.[2] The mission is designed to gather information about the microphysics of magnetic reconnection, energetic particle acceleration, and turbulence — processes that occur in many astrophysical plasmas.[3] As of March 2020, the MMS spacecraft has enough fuel to remain operational until 2040.[4]