Yunhai-3
OperatorCNSA
COSPAR ID2022-151A (Yunhai-3 01) 2024-058A (Yunhai-3 02)
Spacecraft properties
ManufacturerCASC
Start of mission
RocketLong March 6A
ContractorCASC
Yunhai
 

Yunhai-3 is the third set of satellites in a series of Chinese meteorological satellites developed by the Chinese military. The satellites are built by the China Aerospace Science and Technology Corporation (CASC) and then transported to Taiyuan for launch. Their main uses are in the fields of atmospheric data for weather prediction, ionosphere, gravity and climate research, as well as disaster prevention. Like the Yunhai-2 series, the satellites reportedly use the Global Navigation Satellite System Radio Occultation (GNSS-RO).[1]

Satellites

As of March 29, 2024, there are 2 satellites in the Yunhai-3 constellation in orbit, Yunhai-3 01 and Yunhai-3 02.

Name COSPAR Launch Date Launch Vehicle Outcome
Yunhai-3 01 2022-151A November 11, 2022 Long March 6A Success
Yunhai-3 02 2024-058A March 26, 2024 Long March 6A Success

Yunhai-3 01

Yunhai-3 01
OperatorCNSA
COSPAR ID2022-151A
Spacecraft properties
ManufacturerCASC
Start of mission
Launch dateNovember 11, 2022, 22:52:00 (2022-11-11UTC22:52) UTC
RocketLong March 6A
Launch siteLC-9A, Tiayuan Satellite Launch Center
ContractorCASC
Orbital parameters
Semi-major axis7226km
Periapsis altitude854.8km
Apoapsis altitude855.9km
Inclination98.8
Period101.9 minutes
 

Yunhai-3 01 was launched on November 11, 2022, aboard a Long March 6A rocket from LC-9A at Taiyuan Satellite Launch Center in China. It was launched into a sun-synchronous orbit and given the COSPAR ID "2022-151A". It was placed into an ~856 x 855 km orbit with an inclination of 98.8 degrees. The satellite is still in operation as of March 29, 2024.[2][3] The upper stage of the Long March 6A used to launch Yunhai-3 01 broke up in orbit into 37 pieces of debris, possibly due to a propellant explosion. Nine of the 37 pieces of debris currently remain in orbit.[4][5]

Yunhai-3 02

Yunhai-3 02
OperatorCNSA
COSPAR ID2024-058A
Spacecraft properties
ManufacturerCASC
Start of mission
Launch dateMarch 26, 2024, 22:51:00 (2024-03-26UTC22:51) UTC
RocketLong March 6A
Launch siteLC-9A, Taiyuan Satellite Launch Center
ContractorCASC
Orbital parameters
Semi-major axis7226km
Periapsis altitude847.3km
Apoapsis altitude863.7km
Inclination98.82
Period101.9 minutes
 

Yunhai-3 02 was launched on March 26, 2024, on a Long March 6A from LC-9A at Taiyuan Satellite Launch Center. It was also launched into a sun-synchronous orbit. As of March 29, 2024, it is in an ~864 x 847 km orbit with an inclination of 98.82 degrees.[6][7]

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References

  1. ^ Jones, Andrew (2024-03-27). "Long March 6A launches second Yunhai-3 satellite". SpaceNews. Retrieved 2024-03-29.
  2. ^ "Technical details for satellite YUNHAI 3". N2YO.com - Real Time Satellite Tracking and Predictions. Retrieved 2024-03-29.
  3. ^ "Yunhai-3 01". Gunter's Space Page. Retrieved 2024-03-29.
  4. ^ Andrew Jones (2022-11-14). "Chinese rocket body breaks up in orbit after successful satellite launch". Space.com. Retrieved 2024-03-29.
  5. ^ Jones, Andrew (2024-03-27). "Long March 6A launches second Yunhai-3 satellite". SpaceNews. Retrieved 2024-03-29.
  6. ^ "Technical details for satellite YUNHAI 3-02". N2YO.com - Real Time Satellite Tracking and Predictions. Retrieved 2024-03-29.
  7. ^ "CelesTrak: International Designator 2024-058". celestrak.org. Retrieved 2024-03-29.