A

David

Darling

Landsat

Landsat is a continuing series of NASA Earth resources satellites, data from which are made freely available for public use. The Landsat program was originally known as the Earth Resources Technology (ERT) program, and Landsat 1 as ERTS-1; the name was changed by NASA in 1975. All the Landsats have been launched from Vandenberg Air Force Base.

 

spacecraft launch date launch vehicle orbit mass (kg)
Landsat 1 Jul 23, 1972 Delta 100 895 × 908 km × 99° 816
Landsat 2 Jan 22, 1975 Delta 2914 898 × 912 km × 99° 953
Landsat 3 Mar 5, 1978 Delta 2914 895 × 915 km × 99° 960
Landsat 4 Jul 16, 1982 Delta 3925 693 × 705 km × 98° 1,942
Landsat 5 Mar 1, 1984 Delta 3925 695 × 703 km × 98° 1,938
Landsat 6 Oct 5, 1993 Titan II failed to reach orbit 1,740
Landsat 7 Apr 15, 1999 Delta 7925 668 × 698 km × 98° 1,969