"Main engine failed during initial orbit-raising. Planned for 75 E, but is located at 105 W. Slightly more inclined than normal but can function. Spare. Completes the five-satellite constellation."
Next-generation narrowband tactical satellite communications system designed to significantly improve ground communications for U.S. forces on the move.
Third in constellation.
Second of four.
Second in constellation.
Four primary satellites and one orbiting spare will comprise the MUOS system as it is fielded over the next few years to augment and then replace the Navy's aging Ultra High Frequency spacecraft constellation. Orbital parameters estimated.
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