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: 6 hours ago
TLE from 6 hours ago
0 FENGYUN 1C
1 25730U 99025A 26126.79342285 .00002296 00000-0 96390-3 0 9998
2 25730 98.8636 199.7736 0010408 19.2768 340.8803 14.26877148392050Epoch: 2026-05-06T19:02Z
TLE epoch observation values (Epoch: 2026-05-06T19:02:31.734Z)
Latitude
-0.00007°
Longitude
49.49257°
Altitude
798.046 km
Speed
7.458 km/s
True Right ascension
13h 19m 05s
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
09:22:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
806.815 km
Perigee altitude
791.875 km
Semi-major axis
7,177.482 km
Eccentricity
0.00104
Inclination
98.8636°
RAAN
199.7736°
Arg. of periapsis
19.2768°
True anomaly
340.84119°
Mean anomaly
340.8803°
Eccentric anomaly
340.86075°
Mean motion
3.56932 °/min
Orbital period
100.86 mins
BSTAR
0.0009639
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-05-07 03:36:25.490Z | 109.346° ESE | 2026-05-07 03:40:25.490Z | 57.578° ENE | 19.418° | 2026-05-07 03:43:25.490Z | 20.045° NNE |
| 8 mins | 2026-05-07 05:15:25.490Z | 189.553° SSW | 2026-05-07 05:19:25.490Z | 262.182° W | 36.948° | 2026-05-07 05:23:25.490Z | 330.878° NNW |
| 9 mins | 2026-05-07 17:30:25.490Z | 23.061° NE | 2026-05-07 17:34:25.490Z | 97.953° ESE | 41.901° | 2026-05-07 17:39:25.490Z | 183.026° SSW |
| 4 mins | 2026-05-07 19:12:25.490Z | 314.734° NW | 2026-05-07 19:13:25.490Z | 301.259° NW | 16.073° | 2026-05-07 19:16:25.490Z | 264.1° W |
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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