FENGYUN 1C, 25730
Orbit data source: Space-Track
FENGYUN 1C, 25730 is a payload satellite owned by CNMSC (CN) in SSO that was launched on Mon, 10 May 1999 UTC via a CHANG ZHENG 4B launch vehicle from the Taiyaun Space Center, China (TSC). 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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25730 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
SISE
Mission
Non-operational Civil Imaging
Bus & Motor
FY-1, Unknown motor
Mass
958 kg wet, ~958 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 4.3 m
Radar Cross Section
5.659 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 FENGYUN 1C
1 25730U 99025A 26306.76551331 .00001196 00000-0 50617-3 0 9999
2 25730 98.8542 22.0837 0013284 215.0264 145.0044 14.27375759417724Epoch: 2026-11-02T18:22Z
TLE epoch observation values (Epoch: 2026-11-02T18:22:20.349Z)
Latitude
0.00006°
Longitude
64.46107°
Altitude
811.254 km
Speed
7.444 km/s
True Right ascension
01h 28m 20s
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
21:45:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
807.204 km
Perigee altitude
788.139 km
Semi-major axis
7,175.809 km
Eccentricity
0.00133
Inclination
98.8542°
RAAN
22.0837°
Arg. of periapsis
215.0264°
True anomaly
145.09158°
Mean anomaly
145.0044°
Eccentric anomaly
145.048°
Mean motion
3.57056 °/min
Orbital period
100.82 mins
BSTAR
0.00050617
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Other satellites on launch #25 in the year 1999 (1999-05-10 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.FENGYUN 1C 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-11-03 04:35:24.651Z | 140.267° SSE | 2026-11-03 04:39:24.651Z | 84.281° E | 46.067° | 2026-11-03 04:44:24.651Z | 359.954° N |
| 6 mins | 2026-11-03 06:17:24.651Z | 234.025° WSW | 2026-11-03 06:19:24.651Z | 262.261° W | 20.949° | 2026-11-03 06:23:24.651Z | 313.127° NW |
| 5 mins | 2026-11-03 16:52:24.651Z | 66.308° ENE | 2026-11-03 16:54:24.651Z | 93.256° ESE | 17.598° | 2026-11-03 16:57:24.651Z | 130.524° SE |
| 8 mins | 2026-11-03 18:30:24.651Z | 0.617° NNE | 2026-11-03 18:34:24.651Z | 284.52° WNW | 54.509° | 2026-11-03 18:38:24.651Z | 215.289° SW |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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