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YAOGAN 21, 40143

Orbit data source: Space-Track

YAOGAN 21, 40143 is a payload satellite owned by PLA GAD (CN) in SSO that was launched on Mon, 08 Sep 2014 UTC via a CHANG ZHENG 4B launch vehicle from the Taiyaun Space Center, China (TSC). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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Identifier
40143, 2014-053A
Orbit
SSO
Country
Flag of CNCN / PRC
Related business
Manufacturer
CAST
Mission
Operational Defense Imaging
Bus & Motor
JB-10, Unknown motor
Mass
~3,000 kg wet, ~3,000 kg dry
Launch date (UTC)
2014-09-08 (11 years ago)
Launch vehicle
CHANG ZHENG 4B
Launch site
Taiyaun Space Center, China (TSC)
Object type
Payload
Rocket body
Debris
Shape & HBR
Box + 2 Pan, 4.0 m
Radar Cross Section
9.231 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago
0 YAOGAN 21
1 40143U 14053A   25338.73545641  .00014375  00000-0  60321-3 0  9996
2 40143  97.1769  22.3970 0010195  66.1435 294.0870 15.23526770625323
Epoch: 2025-12-04T17:39Z
TLE epoch observation values (Epoch: 2025-12-04T17:39:03.433Z)
Latitude
-0.00005°
Longitude
43.84507°
Altitude
495.46 km
Speed
7.619 km/s
True Right ascension
01h 29m 35s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
N/A
Visualization observer readout
Local Sidereal Time
06:53:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
499.169 km
Perigee altitude
485.16 km
Semi-major axis
6,870.301 km
Eccentricity
0.00102
Inclination
97.1769°
RAAN
22.397°
Arg. of periapsis
66.1435°
True anomaly
293.98029°
Mean anomaly
294.087°
Eccentric anomaly
294.03365°
Mean motion
3.81136 °/min
Orbital period
94.45 mins
BSTAR
0.00060321
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Other satellites on launch #53 in the year 2014 (2014-09-08 UTC)

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