Lewis

Named for 19th century explorer Meriwether Lewis

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General

Designation	24909 / 97044A
Launch date	23 Aug 1997
Country of origin	USA
Mission	Scientific: Remote sensing
Perigee/Apogee	300 km
Inclination	97.5°
Period	95 min
Launch vehicle	Athena #2
Launch site	Vandenberg SLC6

Part of the Small Spacecraft Technology Initiative (SSTI), for NASA.

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End of life

Out of service	26 Aug 1997
Cause	Went out of control after wrong maneuver
Decay	28 Sep 1997

It would have flown 3 imaging spectrometers to gather high resolution spectral images of the Earth's surface and atmosphere, celestial objects. 5 m resolution Panchromatic, 30 m resolution Multispectral

Total cost for NASA: $64.8 million An additional $6.2 million was spent for 1-year storage and maintenance due to delayed launch

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External resources

http://crsphome.ssc.nasa.gov/SSTI/WELCOME.HTM

sat-index articles

Technical data

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Specifications

Prime contractor	TRW
Platform	STEP
Mass at launch	385 kg
Mass in orbit
Dimension
Solar array
Stabilization	3-axis
DC power	370 W
Design lifetime	5 years

Telemetry: 2275.3 MHz (8 kbps)
Command: 2095.172 MHz (2 kbps)
Data: 2275.3 MHz (2.048 Mbps)

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Payload

HSI: Hyper Spectral Imager (will enable to collect data in 384 channels whereas currently standard instruments are limited to 20 channels (range 0.4 µm to 2.5 µm)) (built by TRW)
LEISA: Linear Etalon Imaging Spectral Array (built by NASA Goddard)
UCB: Ultraviolet Cosmic Background Experiment (built by Berkeley)

Lewis will also carry 15 technology demonstrations experiments.

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