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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Edit Public Description
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: 16 hours ago
TLE from 16 hours ago
0 FENGYUN 1C
1 25730U 99025A 25287.16494820 .00004125 00000-0 17612-2 0 9991
2 25730 98.8909 352.3814 0009661 230.7748 129.2574 14.25558178362884Epoch: 2025-10-14T03:57Z
TLE epoch observation values (Epoch: 2025-10-14T03:57:31.524Z)
Latitude
-0.00002°
Longitude
-89.95724°
Altitude
813.93 km
Speed
7.444 km/s
True Right ascension
23h 29m 31s
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
14:09:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
810.715 km
Perigee altitude
796.838 km
Semi-major axis
7,181.914 km
Eccentricity
0.00097
Inclination
98.8909°
RAAN
352.3814°
Arg. of periapsis
230.7748°
True anomaly
129.34306°
Mean anomaly
129.2574°
Eccentric anomaly
129.30023°
Mean motion
3.56601 °/min
Orbital period
100.95 mins
BSTAR
0.0017612
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-10-15 03:40:39.917Z | 128.662° SE | 2025-10-15 03:44:39.917Z | 66.431° ENE | 30.603° | 2025-10-15 03:48:39.917Z | 7.164° NNE |
| 7 mins | 2025-10-15 05:21:39.917Z | 220.993° SW | 2025-10-15 05:24:39.917Z | 269.544° W | 24.58° | 2025-10-15 05:28:39.917Z | 320.704° NNW |
| 8 mins | 2025-10-15 17:36:39.917Z | 5.908° NNE | 2025-10-15 17:39:39.917Z | 320.233° NNW | 42.732° | 2025-10-15 17:44:39.917Z | 204.455° SW |
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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