The mission was called Flight 59, which launched several satellites: PoSAT-1 from Portugal, Eyesat-1 and ItamSat from Italy, KITSAT-2 from South Korea, HealthSat-2 (an international medical satellite) and Stella and SPOT-3 from France, the latter one a large satellite for Earth imaging photography.1011
The PoSAT-1 is a box of aluminum, in the form of a parallelepiped, 58 cm long, 35 cm wide, 35 cm depth and weighs 12 kg. Over a first drawer that contains the batteries and the remote detection module are stacked 10 other drawers full of electronic cards. At the top of the satellite there are sensors for attitude and the stabilization mast, essential tools for PoSAT-1 to maintain correct orbit. Four solar panels are mounted on the lateral sides of the structure of the satellite, forming a parallelepiped, which are the source of energy for all on-board systems. Each panel contains 1344 cells of Gallium arsenide (GaAs).
PoSAT-1 stopped transmitting information to Earth in 2006.14 Its re-entry is expected to be happen in 2043.15
"PoSAT-1: Há 30 anos era lançado o satélite que colocou Portugal no espaço". SAPO Tek. 25 September 2023. https://tek.sapo.pt/noticias/ciencia/artigos/posat-1-ha-30-anos-era-lancado-o-satelite-que-colocou-portugal-no-espaco ↩
Krebs, Gunter D. "PoSAT 1 (POSAT-OSCAR 28, PO 28)". Gunter's Space Page. Retrieved 25 September 2023. https://space.skyrocket.de/doc_sdat/posat-1.htm ↩
"PoSAT-1: O primeiro satélite português foi lançado há 25 anos". SAPO Tek. 25 September 2018. https://tek.sapo.pt/noticias/computadores/artigos/posat-1-o-primeiro-satelite-portugues-foi-lancado-ha-25-anos ↩
Ramalho, Tiago (3 March 2024). "O PoSat-1 descolou em 1993: já não comunica, mas ainda está em órbita". PÚBLICO. https://www.publico.pt/2024/03/03/ciencia/noticia/posat1-descolou-1993-ja-nao-comunica-orbita-2081982 ↩
"POSAT 1". NSSDCA Master Catalog Search. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1993-061G ↩
Rebordão, José Manuel. "PoSAT-1 - Primeiro Satélite Português". www.fernandocarvalhorodrigues.eu. Retrieved 25 September 2023. http://www.fernandocarvalhorodrigues.eu/posat/posat1ph.html ↩
"POSAT 1 Satellite details 1993-061D NORAD 22826". Real Time Satellite Tracking. Retrieved 25 September 2023. https://web.archive.org/web/20061116122543mp_/http://www.n2yo.com/satellite.php?s=22826 ↩