TUBSAT) was a German remote sensing microsatellite, developed in a joint venture between Technische Universität Berlin (TUB) and German Aerospace Center (DLR).

[1] The satellite was launched into orbit on 26 May 1999, on the fifth mission of the PSLV program PSLV-C2.

[2][3] The satellite had an expected life of one year.

[4][5][6] The prime objective of DLR-Tubsat was to test the attitude control system (S/C attitude recovery from hibernation).

The secondary objective of the mission was to test a TV camera system for disaster monitoring with the goal of the introduction of an interactive Earth observation concept, where the target is not identified in advance, a search action may be involved, or a particular target region has to be followed visually from orbit.