CAS500 (Compact Advanced Satellite 500) is a series of Earth observation satellites developed by the Korea Aerospace Research Institute (KARI).[2][3]
Satellites
CAS500-1, (Korean: 국토위성 1호, transl. ”Land Satellite No. 1″), is a prototype 500-kilogram (1,100 lb) class Earth observation satellite that was launched by South Korea at the Baikonur Cosmodrome on 22 March 2021.[4][5][6][7] It is in a 500-kilometre (310 mi) Sun-synchronous orbit, inclined by 97.7 degrees or 15 orbits/day.
CAS500-2 was expected to launch in 2022 also on a Russian rocket, but the launch was cancelled after the Russian invasion of Ukraine.[8][9][2][10] The satellite was later rescheduled to launch together with CAS500-4 on a SpaceX Falcon 9 rocket.[11][12][13]
CAS500-3 was launched on 26 November 2025 on the South Korean launch vehicle Nuri.[14][15]
References
- ^ “SpaceX’s Falcon 9 to send two KAI satellites into space”. Korea JoongAng Daily. Korea JoongAng Daily Co., Ltd. 1 December 2023.
- ^ a b “CAS500 1, 2”. Gunter’s Space Page. Retrieved 2025-11-27.
- ^ “CAS500 (Compact Advanced Satellite 500) – eoPortal”. www.eoportal.org. Archived from the original on 2024-09-30. Retrieved 2025-11-27.
- ^ “Compact Advanced Satellite 500”. Retrieved 22 March 2021.
- ^ “With CAS500, South Korea launches journey toward private-led satellite development”. SpaceNews. 23 March 2021. Retrieved 31 March 2021.
- ^ Park, Si-soo. “With CAS500, South Korea launches journey toward private-led satellite development”.
- ^ “Soyuz launches commercial satellite cluster”. www.russianspaceweb.com. Retrieved 2025-11-27.
- ^ “Canceled Russian Rocket Launches for Korean Satellites Spark Controversy, with Critics Warning of ‘Disadvantage’ in Contract Disclosure”. m.dongascience.com. 2022-09-30. Retrieved 2025-11-27.
- ^ Si-soo, Park (2022-03-02). “Russian sanctions throw South Korean satellite missions into uncertainty”. SpaceNews. Retrieved 2025-11-27.
- ^ “Launch of Space Weather Satellite ‘Doyosat’ Unlikely This Year; Arirang 6, CAS500-2 Also Face ‘Uncertain’ Future”. m.dongascience.com. 2022-05-02. Retrieved 2025-11-27.
- ^ “SpaceX’s Falcon 9 to send two KAI satellites into space”. koreajoongangdaily.joins.com. 2023-12-01. Retrieved 2025-11-27.
- ^ “CAS500-2 & CAS500-4 4 – Space launch mission information”. www.spacerealm.live. Retrieved 2025-11-27.
- ^ Jones, Caleb. “Falcon 9 Block 5 | CAS500-2 & CAS500-4”. Space Launch Now. Retrieved 2025-11-27.
- ^ Mike Wall (2025-11-26). “South Korea launches Earth-observation satellite on homegrown Nuri rocket”. Space. Retrieved 2025-11-27.
- ^ “CAS500 3”. Gunter’s Space Page. Retrieved 2025-11-27.
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