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: 22 hours ago
TLE from 22 hours ago
0 FENGYUN 1C
1 25730U 99025A 25256.13885582 .00001568 00000-0 68552-3 0 9991
2 25730 98.8951 320.9313 0008813 327.6304 32.4333 14.25285063358465Epoch: 2025-09-13T03:19Z
TLE epoch observation values (Epoch: 2025-09-13T03:19:57.142Z)
Latitude
-0.00006°
Longitude
-81.43329°
Altitude
805.106 km
Speed
7.454 km/s
True Right ascension
21h 23m 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
17:32:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
811.025 km
Perigee altitude
798.365 km
Semi-major axis
7,182.832 km
Eccentricity
0.00088
Inclination
98.8951°
RAAN
320.9313°
Arg. of periapsis
327.6304°
True anomaly
32.48751°
Mean anomaly
32.4333°
Eccentric anomaly
32.4604°
Mean motion
3.56533 °/min
Orbital period
100.97 mins
BSTAR
0.00068552
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-09-14 03:04:57.314Z | 101.244° ESE | 2025-09-14 03:07:57.314Z | 63.392° ENE | 17.934° | 2025-09-14 03:10:57.314Z | 25.005° NE |
| 8 mins | 2025-09-14 04:43:57.314Z | 187.433° SSW | 2025-09-14 04:46:57.314Z | 240.564° WSW | 39.089° | 2025-09-14 04:51:57.314Z | 335.682° NNW |
| 8 mins | 2025-09-14 16:59:57.314Z | 29.018° NE | 2025-09-14 17:02:57.314Z | 83.037° E | 39.622° | 2025-09-14 17:07:57.314Z | 178.468° S |
| 5 mins | 2025-09-14 18:40:57.314Z | 321.091° NNW | 2025-09-14 18:42:57.314Z | 293.066° NW | 17.711° | 2025-09-14 18:45:57.314Z | 257.049° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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