YAOGAN 25B, 40339
Orbit data source: Space-Track
YAOGAN 25B, 40339 is a payload satellite owned by PLA GAD (CN) in LEO that was launched on Wed, 10 Dec 2014 UTC via a CHANG ZHENG 4C launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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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40339 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CAST
Mission
Operational Defense Sigint
Bus & Motor
Unknown
Mass
~500 kg wet, ~500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 0.5 m
Radar Cross Section
0.446 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 YAOGAN 25B
1 40339U 14080B 25348.34647311 -.00000117 00000-0 -30532-4 0 9991
2 40339 63.3908 67.0874 0350327 8.0932 352.5545 13.45410251540761Epoch: 2025-12-14T08:18Z
TLE epoch observation values (Epoch: 2025-12-14T08:18:55.276Z)
Latitude
-0.00004°
Longitude
-140.90365°
Altitude
831.703 km
Speed
7.565 km/s
True Right ascension
04h 28m 20s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:07:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,349.581 km
Perigee altitude
826.462 km
Semi-major axis
7,466.159 km
Eccentricity
0.03503
Inclination
63.3908°
RAAN
67.0874°
Arg. of periapsis
8.0932°
True anomaly
352.01074°
Mean anomaly
352.5545°
Eccentric anomaly
352.28504°
Mean motion
3.36432 °/min
Orbital period
107.01 mins
BSTAR
-0.000030532
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Other satellites on launch #80 in the year 2014 (2014-12-10 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.YAOGAN 25B Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-12-15 05:50:47.814Z | 146.4° SSE | 2025-12-15 05:53:47.814Z | 111.141° ESE | 17.728° | 2025-12-15 05:57:47.814Z | 66.682° ENE |
| 10 mins | 2025-12-15 07:39:47.814Z | 230.471° WSW | 2025-12-15 07:43:47.814Z | 309.615° NW | 41.712° | 2025-12-15 07:49:47.814Z | 28.845° NE |
| 5 mins | 2025-12-15 09:33:47.814Z | 311.069° NW | 2025-12-15 09:35:47.814Z | 333.25° NNW | 14.933° | 2025-12-15 09:38:47.814Z | 3.162° NNE |
| 7 mins | 2025-12-15 13:20:47.814Z | 3.744° NNE | 2025-12-15 13:23:47.814Z | 32.065° NE | 15.69° | 2025-12-15 13:27:47.814Z | 64.988° ENE |
| 13 mins | 2025-12-15 15:09:47.814Z | 337.037° NNW | 2025-12-15 15:15:47.814Z | 54.301° ENE | 39.036° | 2025-12-15 15:22:47.814Z | 125.619° SE |
| 12 mins | 2025-12-15 17:00:47.814Z | 303.726° NW | 2025-12-15 17:05:47.814Z | 252.11° W | 30.614° | 2025-12-15 17:12:47.814Z | 186.072° SSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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