EO·Atlas
TopSat
Compiled from public sources on 2026-06-21. Not independently verified by UK Space Agency.
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TopSat was a UK high-resolution optical imaging microsatellite demonstration mission under the Mosaic programme.[1][2] It launched on 2005-10-27 UTC from Plesetsk on Kosmos-3M and operated in Sun-synchronous low Earth orbit at about 682-707 km and 98.18 degrees inclination.[3][2] The mission used a small-satellite platform and carried the TopSat high-resolution optical camera.[1] The camera provided 2.5 m panchromatic pixels, 5 m colour imagery, and a 25 km swath from a 600 km orbit.[1] TopSat produced high-resolution optical imagery before mission end in 2008.[1][2]
All fields
| current status | ended |
| operator | UK Space Agency |
| platform | sstl-100 |
| launch vehicle | roscosmos-kosmos-3m |
| Launched | 2005-10-27 |
| actual end of life | 2008-01-01 |
| orbit type | Sun-synchronous LEO ~682-707 km, 98.18 deg inclination |
| swath km | 25 |
| Last updated | 2026-06-21 |
| claim status | agency-sourced |
Compositional position
- [1]RAL Space TopSat project pageagency doc2026-06-21
- [2]CelesTrak SATCAT 2005-043 launch groupagency doc2026-06-21
- [3]TopSat Wikipedia articlecommunity2026-06-21