YUNHAI 1, 41857
Orbit data source: Space-Track
YUNHAI 1, 41857 is a payload satellite owned by SAST (CN) in SSO that was launched on Fri, 11 Nov 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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41857 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
SAST
Mission
Operational Defense Weather
Bus & Motor
YUNHAI-1, Unknown motor
Mass
~800 kg wet, ~800 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.0 m
Radar Cross Section
5.141 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 YUNHAI 1
1 41857U 16068A 25288.86688059 .00000503 00000-0 20160-3 0 9991
2 41857 98.5916 297.0921 0006340 44.1384 316.0304 14.32583377466840Epoch: 2025-10-15T20:48Z
TLE epoch observation values (Epoch: 2025-10-15T20:48:18.482Z)
Latitude
-0.00013°
Longitude
-39.61969°
Altitude
782.777 km
Speed
7.464 km/s
True Right ascension
19h 48m 22s
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
21:25:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
784.783 km
Perigee altitude
775.706 km
Semi-major axis
7,158.382 km
Eccentricity
0.00063
Inclination
98.5916°
RAAN
297.0921°
Arg. of periapsis
44.1384°
True anomaly
315.97993°
Mean anomaly
316.0304°
Eccentric anomaly
316.00517°
Mean motion
3.58361 °/min
Orbital period
100.46 mins
BSTAR
0.0002016
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Other satellites on launch #68 in the year 2016 (2016-11-11 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.YUNHAI 1 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 | 2025-10-16 12:29:28.607Z | 47.893° ENE | 2025-10-16 12:32:28.607Z | 85.831° E | 19.707° | 2025-10-16 12:36:28.607Z | 139.955° SSE |
| 7 mins | 2025-10-16 14:09:28.607Z | 349.728° N | 2025-10-16 14:12:28.607Z | 289.022° WNW | 34.754° | 2025-10-16 14:16:28.607Z | 222.587° SW |
| 7 mins | 2025-10-16 23:46:28.607Z | 117.792° SE | 2025-10-16 23:49:28.607Z | 70.95° E | 26.364° | 2025-10-16 23:53:28.607Z | 11.705° NNE |
| 7 mins | 2025-10-17 01:25:28.607Z | 208.625° SW | 2025-10-17 01:28:28.607Z | 254.056° W | 27.341° | 2025-10-17 01:32:28.607Z | 319.506° NNW |
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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