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// Workers AI · dad joke modeWhat did CAS500 say to CAS600? You're an upgrade.

From Wikipedia, the free encyclopedia
CAS500
Image of CAS500-1 satellite before launch
Country of originSouth Korea
OperatorKARI
ApplicationsEarth observation
Specifications
BusCAS500
Launch mass500 kg (1,100 lb)
RegimeSSO
Production
StatusIn Production
Built5
Launched4
Maiden launch22 March 2021

CAS500 (Compact Advanced Satellite 500) is a series of Earth observation satellites developed by the Korea Aerospace Research Institute (KARI).[1][2]

Satellites

[edit]
Launch of CAS500-1
Launch of CAS500-4

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.[3][4][5][6] 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.[7][8][1][9] The satellite was rescheduled to launch together with CAS500-4 on a SpaceX Falcon 9 rocket[10][11][12] and later moved to another Falcon 9 flight which launched on 3 May 2026 at 7:00 UTC.[13][14][15]

CAS500-3 was launched on 26 November 2025 on the South Korean launch vehicle Nuri.[16][17] CAS500-3 is not an Earth-observation satellite and instead carries three science instruments: a wide-field camera for observing auroras, a plasma and magnetic field monitoring instrument, and a medical 3D bioprinter.[18]

CAS500-4, carrying a wide-area Earth-observation camera, was launched on the Transporter-17 flight of Falcon 9 on 7 July 2026.[19][20][21]

References

[edit]
  1. 1 2 "CAS500 1, 2". Gunter's Space Page. Retrieved 2025-11-27.
  2. "CAS500 (Compact Advanced Satellite 500) - eoPortal". www.eoportal.org. Archived from the original on 2024-09-30. Retrieved 2025-11-27.
  3. "Compact Advanced Satellite 500". Retrieved 22 March 2021.
  4. "With CAS500, South Korea launches journey toward private-led satellite development". SpaceNews. 23 March 2021. Retrieved 31 March 2021.
  5. Park, Si-soo. "With CAS500, South Korea launches journey toward private-led satellite development".
  6. "Soyuz launches commercial satellite cluster". www.russianspaceweb.com. Retrieved 2025-11-27.
  7. "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.
  8. Si-soo, Park (2022-03-02). "Russian sanctions throw South Korean satellite missions into uncertainty". SpaceNews. Retrieved 2025-11-27.
  9. "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.
  10. "SpaceX's Falcon 9 to send two KAI satellites into space". koreajoongangdaily.joins.com. 2023-12-01. Retrieved 2025-11-27.
  11. "CAS500-2 & CAS500-4 4 - Space launch mission information". www.spacerealm.live. Retrieved 2025-11-27.
  12. Jones, Caleb. "Falcon 9 Block 5 | CAS500-2 & CAS500-4". Space Launch Now. Retrieved 2025-11-27.
  13. "CAS500-2 MISSION". SpaceX. Retrieved 2026-04-26.
  14. Piccin, Stefano (2026-05-03). "In orbita altri 7 satelliti della costellazione HEO di IRIDE". AstroSpace (in Italian). Retrieved 2026-05-03.
  15. "SpaceX sends 45 satellites to orbit in nighttime launch from California (video)". Space. 2026-05-02. Retrieved 2026-05-03.
  16. Mike Wall (2025-11-26). "South Korea launches Earth-observation satellite on homegrown Nuri rocket". Space. Retrieved 2025-11-27.
  17. "CAS500 3". Gunter's Space Page. Retrieved 2025-11-27.
  18. "Three Science Payloads Aboard New Korean Satellite Begin Operations". DongA Science. 2025-12-11. Retrieved 2026-07-06.
  19. "CAS500-4 medium satellite launches from California on July 7 to image Korea every 3 days". DongA Science. 2026-07-05. Retrieved 2026-07-06.
  20. "CAS500-4 Satellite Mission Summary | CEOS Database". database.eohandbook.com. Retrieved 2026-07-06.
  21. "SpaceX launches 81 satellites to orbit from California, lands rocket on ship at sea". Space. 2026-07-06. Retrieved 2026-07-07.