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: 9 hours ago
TLE from 9 hours ago
0 YUNHAI 1
1 41857U 16068A 25302.97527333 .00000427 00000-0 17343-3 0 9991
2 41857 98.5911 311.0749 0005582 5.7203 354.4044 14.32597648468867Epoch: 2025-10-29T23:24Z
TLE epoch observation values (Epoch: 2025-10-29T23:24:23.615Z)
Latitude
0°
Longitude
-78.5642°
Altitude
782.017 km
Speed
7.465 km/s
True Right ascension
20h 44m 17s
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
04:14:13
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
784.193 km
Perigee altitude
776.201 km
Semi-major axis
7,158.334 km
Eccentricity
0.00056
Inclination
98.5911°
RAAN
311.0749°
Arg. of periapsis
5.7203°
True anomaly
354.39816°
Mean anomaly
354.4044°
Eccentric anomaly
354.40128°
Mean motion
3.58365 °/min
Orbital period
100.46 mins
BSTAR
0.00017343
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-10-30 13:23:01.381Z | 18.075° NNE | 2025-10-30 13:28:01.381Z | 98.309° ESE | 43.351° | 2025-10-30 13:33:01.381Z | 186.369° SSW |
| 8 mins | 2025-10-31 00:41:01.381Z | 168.095° S | 2025-10-31 00:44:01.381Z | 198.913° SSW | 44.707° | 2025-10-31 00:49:01.381Z | 345.511° N |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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