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Landsat 5 was launched from Vandenberg Air Force Base in California on March 1, 1984, and like Landsat 4, carried the Multispectral Scanner (MSS) and the Thematic Mapper (TM) instruments. Landsat 5 delivered Earth imaging data nearly 29 years - and set a Guinness World Record For 'Longest Operating Earth Observation Satellite', before being decommissioned on June 5, 2013.
The Landsat 5 satellite orbited the the Earth in a sun-synchronous, near-polar orbit, at an altitude of 705 km (438 mi), inclined at 98.2 degrees, and circled the Earth every 99 minutes. The satellite had a 16-day repeat cycle with an equatorial crossing time: 9:45 a.m. +/- 15 minutes. Landsat 5 data were acquired on the Worldwide Reference System-2 (WRS-2) path/row system, with swath overlap (or sidelap) varying from 7 percent at the Equator to a maximum of approximately 85 percent at extreme latitudes.
Landsat 5 long outlived its original three-year design life. Developed by NASA and launched in 1984, Landsat 5 has orbited the planet over 150,000 times while transmitting over 2.5 million images of land surface conditions around the world.
Data products created from over 600,000 Landsat 5 Multispectral Scanner (MSS) and more than 2.7 million Landsat 5 Thematic Mapper (TM) scenes are available to download from EarthExplorer, GloVis, and the LandsatLook Viewer.
Landsat 5 Spacecraft Facts
- 3-axis stabilized, zero momentum with control of 0.01 deg using reaction wheels
- Aluminum with graphite struts
- Hydrazine propulsion system
- Single solar array with 1-axis articulation
- Three Nickel Cadmium (NiCd) batteries provide 100 Ampere-Hour (AHr) total
- Retractable boom (4 m long) with 2 powered joints supports the articulated High Gain Antenna, which downlinks data via Tracking and Data Relay Satellite System (TDRSS)
- Communications system uses S,X,L, and Ku Bands
- Weight: approximately 4,800 lbs (2,200 kg)
Landsat 5 Instruments
Landsat 5 carried the Multispectral Scanner (MSS) and the new Thematic Mapper (TM) sensors. MSS data acquisitions over the United States ceased in 1992 and global acquisitions ended in 1999. The TM imaging ended in November 2011. In June 2012, the MSS sensor was powered back on and collected data until January 2013, and had limited acqusitions.
Multispectral Scanner (MSS)
- Four spectral bands (identical to Landsat 1 and 2):
- Band 4 Visible green (0.5 to 0.6 µm)
- Band 5 Visible red (0.6 to 0.7 µm)
- Band 6 Near-Infrared (0.7 to 0.8 µm)
- Band 7 Near-Infrared (0.8 to 1.1 µm)
- Six detectors for each spectral band provided six scan lines on each active scan
- Ground Sampling Interval (pixel size): 57 x 79 m
Thematic Mapper (TM)
- Added the mid-range infrared to the data
- Seven spectral bands, including a thermal band:
- Band 1 Visible (0.45 - 0.52 µm) 30 m
- Band 2 Visible (0.52 - 0.60 µm) 30 m
- Band 3 Visible (0.63 - 0.69 µm) 30 m
- Band 4 Near-Infrared (0.76 - 0.90 µm) 30 m
- Band 5 Near-Infrared (1.55 - 1.75 µm) 30 m
- Band 6 Thermal (10.40 - 12.50 µm) 120 m
- Band 7 Mid-Infrared (2.08 - 2.35 µm) 30 m
- Ground Sampling Interval (pixel size): 30 m reflective, 120 m thermal
Landsat 5 History (NASA Landsat Science)
The Thematic Mapper (NASA Landsat Science)
The Multispectral Scanner (NASA Landsat Science)
How to Manage a Satellite Going 17K MPH - May 2013 (Library of Congress)