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: 8 hours ago
TLE from 8 hours ago
0 YUNHAI 1
1 41857U 16068A 26257.56311009 .00000185 00000-0 84312-4 0 9999
2 41857 98.5863 267.7523 0003923 115.9947 244.1641 14.32514071514629Epoch: 2026-09-14T13:30Z
TLE epoch observation values (Epoch: 2026-09-14T13:30:52.711Z)
Latitude
-0.00006°
Longitude
71.49107°
Altitude
787.501 km
Speed
7.459 km/s
True Right ascension
17h 51m 00s
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
13:38:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
783.284 km
Perigee altitude
777.667 km
Semi-major axis
7,158.613 km
Eccentricity
0.00039
Inclination
98.5863°
RAAN
267.7523°
Arg. of periapsis
115.9947°
True anomaly
244.12365°
Mean anomaly
244.1641°
Eccentric anomaly
244.14387°
Mean motion
3.58344 °/min
Orbital period
100.46 mins
BSTAR
0.000084312
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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 | 2026-09-14 23:43:23.777Z | 112.427° ESE | 2026-09-14 23:46:23.777Z | 71.189° E | 24.477° | 2026-09-14 23:50:23.777Z | 15.724° NNE |
| 8 mins | 2026-09-15 01:22:23.777Z | 200.827° SSW | 2026-09-15 01:25:23.777Z | 250.15° W | 38.954° | 2026-09-15 01:30:23.777Z | 329.901° NNW |
| 8 mins | 2026-09-15 13:34:23.777Z | 18.761° NNE | 2026-09-15 13:38:23.777Z | 141.123° SSE | 72.622° | 2026-09-15 13:42:23.777Z | 188.054° SSW |
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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