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: 1 day ago
TLE from 1 day ago
0 FENGYUN 1C
1 25730U 99025A 26295.19918221 .00001385 00000-0 58359-3 0 9999
2 25730 98.8552 10.3726 0012633 250.0697 109.9123 14.27347567416078Epoch: 2026-10-22T04:46Z
TLE epoch observation values (Epoch: 2026-10-22T04:46:49.342Z)
Latitude
0.00001°
Longitude
-91.9705°
Altitude
806.63 km
Speed
7.448 km/s
True Right ascension
00h 41m 29s
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
05:48:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
806.832 km
Perigee altitude
788.701 km
Semi-major axis
7,175.903 km
Eccentricity
0.00126
Inclination
98.8552°
RAAN
10.3726°
Arg. of periapsis
250.0697°
True anomaly
110.04834°
Mean anomaly
109.9123°
Eccentric anomaly
109.98033°
Mean motion
3.57049 °/min
Orbital period
100.83 mins
BSTAR
0.00058359
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-10-23 16:44:00.333Z | 61.884° ENE | 2026-10-23 16:46:00.333Z | 85.718° E | 15.126° | 2026-10-23 16:49:00.333Z | 122.407° SE |
| 8 mins | 2026-10-23 18:23:00.333Z | 2.663° NNE | 2026-10-23 18:26:00.333Z | 316.674° NNW | 59.836° | 2026-10-23 18:31:00.333Z | 208.784° SW |
| 6 mins | 2026-10-24 04:03:00.333Z | 104.936° ESE | 2026-10-24 04:06:00.333Z | 59.95° ENE | 24.238° | 2026-10-24 04:09:00.333Z | 19.513° NNE |
| 8 mins | 2026-10-24 05:42:00.333Z | 201.213° SSW | 2026-10-24 05:45:00.333Z | 257.885° W | 42.311° | 2026-10-24 05:50:00.333Z | 331.574° NNW |
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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