Landsat 5 (TM)

Archive: 1984 - 2012

Landsat 5 (TM) Imagery

  • Xiang Dao, Minhe Huizutuzuzizhixian, Haidong Shi, Qinghai Sheng, China 36.21076°N 102.86774°E
  • Arizona, USA 33.33027°N 114.32510°W
  • Madagascar 21.67000°S 43.50723°E

About Landsat 5 (TM)

Since 1984, Landsat 5 has gathered more than 700,000 images and observed climate change, agricultural practices, development and urbanization of cities, ecosystem evolution, and increasing demand for natural resources.

The Landsat Thematic Mapper (TM) sensor was carried on Landsat 4 and Landsat 5, and created images consisting of six spectral bands with a spatial resolution of 30 meters for Bands 1-5 and 7, and one thermal band (Band 6). The approximate scene size is 170 km north-south and 183 km east-west (106 mi by 114 mi). TM could not resolve individual houses or trees, but it could record areas where houses had been constructed or forests had been cleared.

Landsat 5 (TM) Characteristics

Characteristic
Description
Participants
  • NASA
  • NOAA
  • EOSAT
  • DOI USGS
  • GE
Launch Date
March 1, 1984
Vehicle
Delta 3920
Site
Vandenberg Air Force Base, California
Spacecraft
  • 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 downlinked data via the Tracking and Data Relay Satellite System (TDRSS)
  • Communications system uses S,X,L, and Ku Bands
  • Weight: approximately 4,800 lbs (2,200 kg)
Communications
  • Direct downlink with TDRSS
  • Data rate: 85 Mbps
  • Quantization: 8 bit (256 levels)
Orbit
  • Worldwide Reference System-2 (WRS-2) path/row system
  • Circular, sun-synchronous, near-polar orbit at an altitude of 705 km (438 mi)
  • Inclined at 98.2°
  • Repeat cycle: 16 days
  • Swath width: 185 km (115 mi)
  • Equatorial crossing time: 9:45 a.m. +/- 15 minutes
Sensors
  • Multispectral Scanner (MSS)
  • Thematic Mapper (TM)
Scene size
170 km x 185 km (106 mi x 115 mi)
Design life
Minumum of 3 years

Landsat 5 (TM) Specifications

Sensor Band number Band name Wavelength (μm) Resolution (m) Band Applications
TM 1 Visible Blue 0.45 - 0.52 30 Bathymetric mapping, distinguishing soil from vegetation, and deciduous from coniferous vegetation
TM 2 Visible Green 0.52 - 0.60 30 Emphasizes peak vegetation, which is useful for assessing plant vigor
TM 3 Visible Red 0.63 - 0.69 30 Discriminates vegetation slopes
TM 4 NIR 0.76 - 0.90 30 Emphasizes biomass content and shorelines
TM 5 SWIR 1 1.55 - 1.75 30 Discriminates moisture content of soil and vegetation; penetrates thin clouds
TM 6 Thermal 10.40 - 12.50 120 Thermal mapping and estimated soil moisture
TM 7 SWIR 2 2.08 - 2.35 30 Hydrothermally altered rocks associated with mineral deposits

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