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Clementine - DSPSE

The Deep Space Program Science Experiment (DSPSE), the first of a series of Clementine technology demonstrations jointly sponsored by the Ballistic Missile Defense Organization (BMDO) and the National Aeronautics and Space Administration (NASA ), launched in early 1994. Its principal objective is to space qualify lightweight imaging sensors and component technologies for the next generation of Department of Defense (DoD) spacecraft. The Clementine mission uses the Moon, a near-Earth asteroid, and the spacecraft's Interstage Adapter (ISA) as targets to demonstrate lightweight component and sensor performance. As a secondary mission, Clementine returns valuable data of interest to the international civilian scientific sector. It represents a new class of small, low cost, and highly capable spacecraft that fully embrace emerging lightweight technologies to enable a series of long-duration deep space missions.

The BMDO assigned responsibility for the Clementine spacecraft design, manufacture, integration, and mission execution to the Naval Research Laboratory (NRL). The Lawrence Livermore National Laboratory (LLNL) provided lightweight imaging sensors developed under the sponsorship of BMDO. Clementine launched on a Titan IIG expendable launch vehicle from Vandenburg Air Force Base into Low Earth Orbit (LEO) in January 1994. During its two month orbit of the Moon it captured 1.8 million images of the Moons surface.

The Pentagon announced on December 3, 1996 that data acquired by the Clementine spacecraft indicates that there is ice in the bottom of a crater on the Moon. Located on the Moon's South pole it was discovered with radar data and although it is never lit by the sun

Mass:424 kg (with propellant)
Power:360 W @ 1 AU
Size:1.14 m diameter by 1.88 m length
Characteristics:Three-axis stabilized
Gimbaled (Single Axis) GaAs solar arrays
Fixed 1.1 m high-gain antenna
Fixed Sensors
Combined active and passive thermal design
Telemetry:S-Band RF link to NASA Deep Space Network and DoD tracking stations
Data Rate:Downlink selectable between 0.125 and 128 kb/s
On-Board Storage:1.9 Gbit solid state recorder
Propulsion:4865 m/s
Bi-propellant: 489 N thruster
Mono-propellant: 5.3 N thrusters (10); 22.7 N thrusters (7)
STAR 37FM Kick Motor
DSPSE Mission Center:NRL facility located in Alexandria, VA
Lunar & Asteroid Nav.Goddard Space Flight Center
Jet Propulsion Laboratory

Clementine II

Preliminary studies for a Clementine II mission have been done by JPL, APL, and NRL, envisioning multiple asteroid or asteroid/comet encounters. No funding has been allocated for such missions.


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Page last modified: 21-07-2011 13:04:13 ZULU