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Track MMS 1 now!
MMS 1 is classified as:

NORAD ID: 40482
Int'l Code: 2015-011A
Perigee: 1,875.1 km
Apogee: 180,817.6 km
Inclination: 35.8 °
Period: 5,066.6 minutes
Semi major axis: 97717 km
RCS: Unknown
Launch date: March 13, 2015
Source: United States (US)

MMS (Magnetospheric Multiscale) is a Solar-Terrestrial Probe mission comprising four identically instrumented spin-stabilized spacecraft to discover the fundamental physics of magnetic reconnection using Earth's magnetosphere as a laboratory. The MMS spacecraft are being developed at NASA's Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. GSFC is also responsible for the overall management of the MMS mission and mission operations. The mission is to be launched in October 2014 and will have an duration of two years (Prime Mission) + 6 months (launch, checkout, commissioning).
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 40482U 15011A   23343.25001157  .00000022  00000-0  00000+0 0  9995
2 40482  35.7504  32.1414 9156123 127.8835  54.4043  0.28421389 14833
Source of the keplerian elements: AFSPC