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: 10 hours ago
TLE from 10 hours ago
0 FENGYUN 1C
1 25730U 99025A 26252.78726793 .00001524 00000-0 64176-3 0 9997
2 25730 98.8591 327.4225 0013071 21.0134 339.1581 14.27233309410028Epoch: 2026-09-09T18:53Z
TLE epoch observation values (Epoch: 2026-09-09T18:53:39.949Z)
Latitude
0.00004°
Longitude
55.17172°
Altitude
795.143 km
Speed
7.461 km/s
True Right ascension
21h 49m 41s
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
20:40:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
807.53 km
Perigee altitude
788.77 km
Semi-major axis
7,176.287 km
Eccentricity
0.00131
Inclination
98.8591°
RAAN
327.4225°
Arg. of periapsis
21.0134°
True anomaly
339.10473°
Mean anomaly
339.1581°
Eccentric anomaly
339.13142°
Mean motion
3.57021 °/min
Orbital period
100.83 mins
BSTAR
0.00064176
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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
Loading observer location...
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 | 2026-09-10 05:06:13.044Z | 169.388° S | 2026-09-10 05:10:13.044Z | 205.334° SW | 75.43° | 2026-09-10 05:15:13.044Z | 343.712° N |
| 8 mins | 2026-09-10 17:22:13.044Z | 39.651° NE | 2026-09-10 17:25:13.044Z | 90.145° ESE | 38.497° | 2026-09-10 17:30:13.044Z | 165.896° S |
| 7 mins | 2026-09-10 19:02:13.044Z | 336.44° NNW | 2026-09-10 19:05:13.044Z | 289.689° WNW | 26.012° | 2026-09-10 19:09:13.044Z | 239.908° WSW |
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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