National Oceanic and Atmospheric Administration (NOAA)
Department of the Interior (DOI) U.S. Geological Survey (USGS)
Spacecraft bus: Lockheed Martin Missiles & Space
Enhanced Thematic Mapper (ETM): Hughes Santa Barbara Research Center
Launch
Date: October 5, 1993
Vehicle: Titan II
Launched by: NASA
Site: Western Test Range at Vandenberg Air Force Base, California
Spacecraft
Power provided by a single sun-tracking solar array and two 50 Ampere-Hour (AHr), Nickel Cadmium (NiCd) batteries
Attitude control provided through four reaction wheels (pitch, yaw, roll, and skew); three 2-channel gyros with celestial drift updating; a static Earth sensor; a 1750 processor; and torque rods and magnetometers for momentum uploading
Orbit control and backup momentum unloading provided through a blow-down monopropellant hydrazine system with a single tank containing 270 pounds of hydrazine, associated plumbing, and twelve 1-pound-thrust jets
Weight: approx. 4,800 lbs (2,200 kg)
Length: 4.3 m (14 ft)
Diameter: 2.8 m (9 ft)
Communications
Direct downlink with solid state recorders capable of storing 380 gigabits of data (100 scenes)
Data rate: 85 Mbps
Orbit (if obtained)
Worldwide Reference System-2 (WRS-2) path/row system
Sun-synchronous orbit at an altitude of 705 km (438 mi)
U.S. Department of the Interior |
U.S. Geological Survey
