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astronautix.com Landsat 1-2-3

Landsat 3
Landsat 3 -

Credit: NASA. 16,995 bytes. 234 x 270 pixels.



Class: Earth. Type: Landsat. Nation: United States. Agency: NASA, GSFC . Manufacturer: GE Astro Space.

The first 3 Landsat missions were also known as the Earth Resources Technology Satellite (ERTS) series. Images from Landsat 1 demonstrated the usefulness of remote sensing data for land surveys, land management, water resource planning, agricultural forecasting, forest management, sea ice movement, and cartography. When Landsat 1 was finally removed from service in January 1978 due to tape recorder faults, it had returned over 300000 images. Landsat 2 was removed from service on 2/25/82, and Landsat 3 was removed from service on 3/31/83. Archived images from these missions are available through EOSAT. Spacecraft: The spacecraft design had significant inheritance from the Nimbus program (also manufactured by General Electric).3-axis stabilised using 4 momentum wheels to 0.7 deg accuracy. Twin solar paddles (single-axis articulation) provided 1000 W (BOL peak), 515 W (BOL ave). NiCd batteries. S-Band and VHF communications with 1 W transponder. Hydrazine propulsion system with 3 thrusters. Data downlink rate of 15 Mbps. Payload: Carried Return Beam Vidicon (RBV) and Multi-Spectral Scanner (MSS) imaging sensors. The MSS covers 0.5 to 12.6 m and provides 75 m resolution at best with a 185 km swath width. The RBV covers 0.5 to 0.75 m and provides 40 m resolution with a 185 km swath width. Payload mass was about 150 kg.


Specification

Design Life: 1 year. Total Length: 3.0 m. Maximum Diameter: 1.5 m. Total Mass: 910 kg.


Landsat 1-2-3 Chronology


23 July 1972 Landsat 1 Program: Landsat. Launch Site: Vandenberg . Launch Vehicle: Delta 100. Mass: 816 kg. Perigee: 895 km. Apogee: 908 km. Inclination: 99.4 deg.

Earth Resources Technology Satellite. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).


22 January 1975 Landsat 2 Program: Landsat. Launch Site: Vandenberg . Launch Vehicle: Delta 2914. Mass: 953 kg. Perigee: 898 km. Apogee: 912 km. Inclination: 98.9 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).


01 January 1978 Landsat 1 removed from service.

Landsat 1 was finally removed from service in January 1978 due to tape recorder faults. It had returned over 300,000 images.


05 March 1978 Landsat 3 Program: Landsat. Launch Site: Vandenberg . Launch Vehicle: Delta 2914. Mass: 960 kg. Perigee: 895 km. Apogee: 915 km. Inclination: 98.9 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).


25 February 1982 Landsat 2 removed from service.
31 March 1983 Landsat 3 removed from service.

Bibliography:



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Last update 12 March 2001.
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