YIJIAN, 41899
Orbit data source: Space-Track
YIJIAN, 41899 is a payload satellite owned by SECM (CN) in SSO that was launched on Wed, 21 Dec 2016 UTC via a CHANG ZHENG 2D 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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41899 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
SECM
Mission
Operational Civil Imaging
Bus & Motor
CX-6, Unknown motor
Mass
60 kg wet, 60 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 0.5 m
Radar Cross Section
0.388 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 YIJIAN
1 41899U 16081B 25343.50956838 .00001462 00000-0 31139-3 0 9991
2 41899 98.5265 330.6969 0021001 172.3593 187.7930 14.60433668476900Epoch: 2025-12-09T12:13Z
TLE epoch observation values (Epoch: 2025-12-09T12:13:46.708Z)
Latitude
-0.00003°
Longitude
68.75906°
Altitude
709.464 km
Speed
7.493 km/s
True Right ascension
22h 02m 47s
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
15:18:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
703.711 km
Perigee altitude
674.029 km
Semi-major axis
7,067.007 km
Eccentricity
0.0021
Inclination
98.5265°
RAAN
330.6969°
Arg. of periapsis
172.3593°
True anomaly
187.76045°
Mean anomaly
187.793°
Eccentric anomaly
187.77672°
Mean motion
3.65334 °/min
Orbital period
98.54 mins
BSTAR
0.00031139
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Other satellites on launch #81 in the year 2016 (2016-12-21 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.YIJIAN 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-12-09 22:15:05.370Z | 107.931° ESE | 2025-12-09 22:18:05.370Z | 62.358° ENE | 20.108° | 2025-12-09 22:21:05.370Z | 19.922° NNE |
| 7 mins | 2025-12-09 23:52:05.370Z | 201.029° SSW | 2025-12-09 23:55:05.370Z | 260.193° W | 32.225° | 2025-12-09 23:59:05.370Z | 328.247° NNW |
| 7 mins | 2025-12-10 11:50:05.370Z | 29.628° NE | 2025-12-10 11:53:05.370Z | 81.831° E | 36.246° | 2025-12-10 11:57:05.370Z | 171.542° S |
| 4 mins | 2025-12-10 13:29:05.370Z | 319.087° NNW | 2025-12-10 13:30:05.370Z | 304.184° NW | 15.994° | 2025-12-10 13:33:05.370Z | 260.84° W |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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