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: 11 hours ago
TLE from 11 hours ago
0 FENGYUN 1C
1 25730U 99025A 26238.97634603 .00001890 00000-0 79183-3 0 9990
2 25730 98.8607 313.4332 0013744 59.7303 300.5235 14.27188397408057Epoch: 2026-08-26T23:25Z
TLE epoch observation values (Epoch: 2026-08-26T23:25:56.296Z)
Latitude
-0.00008°
Longitude
-13.27297°
Altitude
799.061 km
Speed
7.457 km/s
True Right ascension
20h 53m 43s
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
01:48:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
808.164 km
Perigee altitude
788.437 km
Semi-major axis
7,176.438 km
Eccentricity
0.00137
Inclination
98.8607°
RAAN
313.4332°
Arg. of periapsis
59.7303°
True anomaly
300.38771°
Mean anomaly
300.5235°
Eccentric anomaly
300.45562°
Mean motion
3.5701 °/min
Orbital period
100.84 mins
BSTAR
0.00079183
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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 | 2026-08-27 16:51:47.973Z | 50.633° ENE | 2026-08-27 16:54:47.973Z | 89.349° E | 19.548° | 2026-08-27 16:58:47.973Z | 140.838° SSE |
| 8 mins | 2026-08-27 18:31:47.973Z | 352.159° N | 2026-08-27 18:34:47.973Z | 294.755° NW | 35.668° | 2026-08-27 18:39:47.973Z | 218.283° SW |
| 8 mins | 2026-08-28 04:10:47.973Z | 121.963° SE | 2026-08-28 04:14:47.973Z | 56.191° ENE | 27.351° | 2026-08-28 04:18:47.973Z | 6.515° NNE |
| 7 mins | 2026-08-28 05:50:47.973Z | 212.897° SW | 2026-08-28 05:53:47.973Z | 260.791° W | 26.632° | 2026-08-28 05:57:47.973Z | 320.154° 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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