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Lem (satellite)
Lem is the first Polish scientific artificial satellite. It was launched in November 2013 as part of the Bright-star Target Explorer (BRITE) programme. The spacecraft was launched aboard a Dnepr rocket. Named after the Polish science fiction writer Stanisław Lem, it is an optical astronomy spacecraft operated by the Space Research Centre of the Polish Academy of Sciences, one of two Polish contributions to the BRITE constellation along with the Heweliusz satellite.
==Features==
Lem is the first Polish scientific satellite, and the second (after PW-Sat) ever launched. Along with Heweliusz, TUGSAT-1, UniBRITE-1 and BRITE-Toronto, it is one from a constellation of six nanosatellites of the BRIght-star Target Explorer project, operated by a consortium of universities from Canada, Austria and Poland.
Lem was developed and manufactured by the Space Research Centre of the Polish Academy of Sciences in 2011, based around the Generic Nanosatellite Bus, and had a mass at launch of (plus another 7 kg for the XPOD separation system). The satellite is used, along with four other operating spacecraft, to conduct photometric observations of stars with an apparent magnitude of greater than 4.0 as seen from Earth. Lem was one of two Polish BRITE satellites launched, along with the Heweliusz spacecraft. Four more satellites—two Austrian and two Canadian—were launched at different dates.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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