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 25259.43827806 .00002116 00000-0 91765-3 0 9994
2 25730 98.8946 324.2761 0008684 317.3550 42.6954 14.25300763358937Epoch: 2025-09-16T10:31Z
TLE epoch observation values (Epoch: 2025-09-16T10:31:07.224Z)
Latitude
-0.00001°
Longitude
170.86742°
Altitude
805.813 km
Speed
7.453 km/s
True Right ascension
21h 37m 06s
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
01:04:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
810.88 km
Perigee altitude
798.405 km
Semi-major axis
7,182.779 km
Eccentricity
0.00087
Inclination
98.8946°
RAAN
324.2761°
Arg. of periapsis
317.355°
True anomaly
42.76293°
Mean anomaly
42.6954°
Eccentric anomaly
42.72916°
Mean motion
3.56537 °/min
Orbital period
100.97 mins
BSTAR
0.00091765
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-09-17 17:25:56.435Z | 11.196° NNE | 2025-09-17 17:29:56.435Z | 255.086° W | 44.667° | 2025-09-17 17:34:56.435Z | 198.624° SSW |
| 5 mins | 2025-09-18 03:07:56.435Z | 91.624° ESE | 2025-09-18 03:09:56.435Z | 63.828° ENE | 18.456° | 2025-09-18 03:12:56.435Z | 24.854° NE |
| 8 mins | 2025-09-18 04:45:56.435Z | 188.731° SSW | 2025-09-18 04:48:56.435Z | 240.688° WSW | 38.386° | 2025-09-18 04:53:56.435Z | 334.874° NNW |
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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