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Track XM-4 now!
XM-4 is classified as:

NORAD ID: 29520
Int'l Code: 2006-049A
Perigee: 35,698.8 km
Apogee: 35,715.0 km
Inclination: 0.1 °
Period: 1,431.7 minutes
Semi major axis: 42077 km
RCS: 15.8489 m2 (large)
Launch date: October 30, 2006
Source: United States (US)
Launch site: SEA LAUNCH (SEAL)

XM 4 is an American geostationary satellite that was launched by a Zenit 3SL rocket from the floating platform, Odyssey parked on the equatorial Pacific ocean at 154° W longitude, at 23:49 UT on 30 October 2006. The 5.2 tonne (with fuel) craft carries an 18 kW transponder to provide S-band Digital Audio Radio Service (DARS) to homes and automobiles in North America, after parking over 115° W longitude.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 29520U 06049A   23038.50848814 -.00000277  00000-0  00000-0 0  9998
2 29520   0.0664 273.2204 0001922 116.4287 225.3746  1.00582338 39178
Source of the keplerian elements: AFSPC