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 26172.49691751 .00000590 00000-0 23422-3 0 9996
2 41857 98.5846 183.4647 0005850 46.3194 313.8474 14.32426766502441Epoch: 2026-06-21T11:55Z
TLE epoch observation values (Epoch: 2026-06-21T11:55:33.672Z)
Latitude
-0.00002°
Longitude
94.87806°
Altitude
783.664 km
Speed
7.464 km/s
True Right ascension
12h 13m 51s
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
00:49:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
784.955 km
Perigee altitude
776.579 km
Semi-major axis
7,158.904 km
Eccentricity
0.00059
Inclination
98.5846°
RAAN
183.4647°
Arg. of periapsis
46.3194°
True anomaly
313.79903°
Mean anomaly
313.8474°
Eccentric anomaly
313.82322°
Mean motion
3.58322 °/min
Orbital period
100.47 mins
BSTAR
0.00023422
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-06-22 23:19:21.830Z | 80.137° E | 2026-06-22 23:20:21.830Z | 67.302° ENE | 14.405° | 2026-06-22 23:23:21.830Z | 30.235° NE |
| 8 mins | 2026-06-23 00:56:21.830Z | 179.162° S | 2026-06-23 00:59:21.830Z | 241.8° WSW | 42.767° | 2026-06-23 01:04:21.830Z | 340.942° N |
| 8 mins | 2026-06-23 13:08:21.830Z | 34.443° NE | 2026-06-23 13:11:21.830Z | 83.575° E | 34.125° | 2026-06-23 13:16:21.830Z | 169.439° S |
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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