Key statistics
Satellite ZK-1A R/B at a glance.
Uptime
31
Days in orbit
Revolutions
≈ 15.0
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for ZK-1A R/B.
Object identification
Identified? True
Debris? False
Object name: ZK-1A R/B
International designator: 2025-256C
Object number (NORAD): 66411
Object ID (CCSDS): 66411
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
Orbital parameters
Period: 95.882 minutes
Inclination: 98.3225 deg
SMA: 6939.347 km
Apoapsis: 719.924 km
Periapsis: 402.5 km
RAAN: 50.2797 deg
Eccentricy: 0.0228713
Argument of periapsis: 258.1825 deg
Mean anomaly: 99.3665 deg
Mean motion: 15.01844094 rev/day
Mean motion (dot): 0.00018825 rev/day2
B* drag term: 0.00081739 1/REarth
Two-line elements (TLE)
Creation date: Dec. 9, 2025, 12:16 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 8, 2025, 6:48 p.m. UTC
TLE line 0: 0 ZK-1A R/B
TLE line 1: 1 66411U 25256C 25342.78338317 .00018825 00000-0 81739-3 0 9999
TLE line 2: 2 66411 98.3225 50.2797 0228713 258.1825 99.3665 15.01844094 4450
Live tracking on map
Real-time ground track for satellite ZK-1A R/B.
In-orbit conjunctions
There are no conjunctions computed for ZK-1A R/B, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
2 satellites built by the China Aerospace Science and Industry Corporation (CASIC) for testing operations of Very Low Earth Orbit (VLEO) satellites for Earth observation purposes.
ZK-1A R/B was lifted into orbit during the mission ‘Kinetica 1 | Chutian-2 01 & 02’, on board a Kinetica 1 space rocket.
The launch took place on Nov. 9, 2025, 3:32 a.m. from Launch Area 130.
For more information about the launch, click the button.
Kinetica 1 | Chutian-2 01 & 02
Agency: N/A
Status: Launch Successful
Launch date: Nov. 9, 2025, 3:32 a.m. UTC
Rocket: Kinetica 1
Launch pad: Launch Area 130
Location: Jiuquan Satellite Launch Center, People's Republic of China
...
Latest news about this satellite
China breaks annual launch record with VLEO Chutian and Shiyan technology test launches
China conducted a pair of solid rocket launches late Saturday, seeing the country surpass its previous record for orbital launch attempts in a calendar year. The post China breaks annual launch record with VLEO Chutian and Shiyan technology test launches...
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This week’s launch manifest will feature nine missions launching on seven different rockets, including the… The post Launch Roundup: Ariane 6 and New Glenn set to launch during busy week appeared first on NASASpaceFlight.com.
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