DART (bottom) approaching the MUBLCOM satellite (top)
Mission typeTechnology Demonstrator
COSPAR ID1999-026B Edit this at Wikidata
SATCAT no.25736
Spacecraft properties
Launch mass100 kilograms (220 lb)
Dry mass50 kilograms (110 lb)
Start of mission
Launch dateMay 18, 1999 (1999-05-18)
Launch siteVandenberg
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude726 kilometers (451 mi)
Apogee altitude732 kilometers (455 mi)
Inclination97.7 degrees
Period99.4 minutes

The Multiple Paths, Beyond-Line-of-Sight Communications (MUBLCOM) satellite (COSPAR 1999-026B, SATCAT 25736), built for the Pentagon's Defense Advanced Research Projects Agency, was launched in May 1999 by a Pegasus. Its mission was to demonstrate a capability to provide space-based digital voice and data communications to combat forces or commercial users that were previously considered out of range of standard radio communications systems.

On April 15, 2005, the Demonstration of Autonomous Rendezvous Technology (DART) spacecraft collided with the MUBLCOM satellite while attempting to rendezvous with it.