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: 3 hours ago
TLE from 3 hours ago
0 YUNHAI 1
1 41857U 16068A 25333.21702858 .00000372 00000-0 15303-3 0 9992
2 41857 98.5894 341.0422 0004473 263.5080 96.5595 14.32629793473197Epoch: 2025-11-29T05:12Z
TLE epoch observation values (Epoch: 2025-11-29T05:12:31.269Z)
Latitude
0.00003°
Longitude
-165.4365°
Altitude
786.257 km
Speed
7.46 km/s
True Right ascension
22h 44m 10s
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
05:50:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
783.292 km
Perigee altitude
776.888 km
Semi-major axis
7,158.227 km
Eccentricity
0.00045
Inclination
98.5894°
RAAN
341.0422°
Arg. of periapsis
263.508°
True anomaly
96.61042°
Mean anomaly
96.5595°
Eccentric anomaly
96.58496°
Mean motion
3.58373 °/min
Orbital period
100.45 mins
BSTAR
0.00015303
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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 | 2025-11-29 12:30:54.378Z | 48.197° ENE | 2025-11-29 12:33:54.378Z | 86.632° E | 19.94° | 2025-11-29 12:37:54.378Z | 140.625° SSE |
| 7 mins | 2025-11-29 14:10:54.378Z | 348.987° N | 2025-11-29 14:13:54.378Z | 287.193° WNW | 34.558° | 2025-11-29 14:17:54.378Z | 222.629° SW |
| 7 mins | 2025-11-29 23:47:54.378Z | 116.936° SE | 2025-11-29 23:50:54.378Z | 68.499° E | 26.711° | 2025-11-29 23:54:54.378Z | 10.85° NNE |
| 7 mins | 2025-11-30 01:26:54.378Z | 209.939° SW | 2025-11-30 01:29:54.378Z | 256.803° W | 27.457° | 2025-11-30 01:33:54.378Z | 320.194° 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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