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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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: 1 day ago
TLE from 1 day ago
0 YUNHAI 1
1 41857U 16068A 26297.30593375 .00000387 00000-0 15887-3 0 9997
2 41857 98.5860 307.1195 0003506 30.2552 329.8834 14.32535956520311Epoch: 2026-10-24T07:20Z
TLE epoch observation values (Epoch: 2026-10-24T07:20:32.676Z)
Latitude
-0.00002°
Longitude
164.26933°
Altitude
784.03 km
Speed
7.463 km/s
True Right ascension
20h 28m 28s
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
04:11:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
782.912 km
Perigee altitude
777.893 km
Semi-major axis
7,158.54 km
Eccentricity
0.00035
Inclination
98.586°
RAAN
307.1195°
Arg. of periapsis
30.2552°
True anomaly
329.86323°
Mean anomaly
329.8834°
Eccentric anomaly
329.87332°
Mean motion
3.58349 °/min
Orbital period
100.46 mins
BSTAR
0.00015887
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-10-25 12:26:59.447Z | 55.469° ENE | 2026-10-25 12:29:59.447Z | 92.951° ESE | 16.913° | 2026-10-25 12:32:59.447Z | 129.877° SE |
| 8 mins | 2026-10-25 14:05:59.447Z | 359.51° N | 2026-10-25 14:09:59.447Z | 268.619° W | 53.903° | 2026-10-25 14:13:59.447Z | 212.872° SW |
| 6 mins | 2026-10-25 23:43:59.447Z | 107.073° ESE | 2026-10-25 23:46:59.447Z | 61.62° ENE | 24.163° | 2026-10-25 23:49:59.447Z | 19.908° NNE |
| 7 mins | 2026-10-26 01:22:59.447Z | 204.698° SW | 2026-10-26 01:25:59.447Z | 265.471° W | 40.119° | 2026-10-26 01:29:59.447Z | 327.75° 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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