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Beidou-MEO

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Beidou IGS 1 Credit: Manufacturer Image

Status: Operational 2007. First Launch: 2007-04-12. Last Launch: 2012-09-18. Number: 5 . Gross mass: 6,000 kg (13,200 lb).

27 MEO (medium-earth orbit satellites), deployed in three planes, in 21,500 km altitude orbits inclined at 55 degrees to the equator. The first test satellite was launched in April 2011. Four were to be deployed by 2012 to provide the first regional coverage for the system, and all 27 by 2020, to provide global coverage.

• Beidou M1 - . Payload: Beidou DW5. Mass: 2,800 kg (6,100 lb). Nation: China. Agency: CASC. Manufacturer: CAST. Class: Navigation. Type: Navigation satellite. Spacecraft: Beidou-MEO. USAF Sat Cat: 31115 . COSPAR: 2007-011A. Apogee: 21,544 km (13,386 mi). Perigee: 21,519 km (13,371 mi). Inclination: 55.30 deg. Period: 773.40 min. The fifth Beidou satellite, but the first in the 12-hour, 55 deg inclination MEO portion of the constellation. Tested frequencies and equipment for later operational MEO component of the Beidou-2 constellation..

• Beidou M3 - . Payload: Beidou DW 12. Mass: 6,000 kg (13,200 lb). Nation: China. Class: Navigation. Type: Navigation satellite. Spacecraft: Beidou-MEO. USAF Sat Cat: 38250 . COSPAR: 2012-018A. Apogee: 21,594 km (13,417 mi). Perigee: 21,461 km (13,335 mi). Inclination: 55.20 deg. Period: 773.20 min.

• Beidou M4 - . Payload: Beidou DW 13. Mass: 6,000 kg (13,200 lb). Nation: China. Class: Navigation. Type: Navigation satellite. Spacecraft: Beidou-MEO. USAF Sat Cat: 38251 . COSPAR: 2012-018B. Apogee: 21,602 km (13,422 mi). Perigee: 21,453 km (13,330 mi). Inclination: 55.10 deg. Period: 773.20 min.

• Beidou M5 - . Payload: Beidou DW14. Mass: 6,000 kg (13,200 lb). Nation: China. Class: Navigation. Type: Navigation satellite. Spacecraft: Beidou-MEO. USAF Sat Cat: 38774 . COSPAR: 2012-050A. Apogee: 21,591 km (13,416 mi). Perigee: 21,462 km (13,335 mi). Inclination: 55.00 deg. Period: 773.20 min.

• Beidou M6 - . Payload: Beidou DW15. Mass: 6,000 kg (13,200 lb). Nation: China. Class: Navigation. Type: Navigation satellite. Spacecraft: Beidou-MEO. USAF Sat Cat: 38775 . COSPAR: 2012-050B. Apogee: 21,578 km (13,407 mi). Perigee: 21,472 km (13,342 mi). Inclination: 55.10 deg. Period: 773.10 min.