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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
25730 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
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: 20 hours ago
TLE from 20 hours ago
0 FENGYUN 1C
1 25730U 99025A 25294.18355757 .00004850 00000-0 20643-2 0 9999
2 25730 98.8906 359.4966 0010057 210.9688 149.0899 14.25623199363888Epoch: 2025-10-21T04:24Z
TLE epoch observation values (Epoch: 2025-10-21T04:24:19.374Z)
Latitude
-0°
Longitude
-96.4593°
Altitude
815.517 km
Speed
7.442 km/s
True Right ascension
23h 57m 59s
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
19:26:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
810.781 km
Perigee altitude
796.335 km
Semi-major axis
7,181.695 km
Eccentricity
0.00101
Inclination
98.8906°
RAAN
359.4966°
Arg. of periapsis
210.9688°
True anomaly
149.14904°
Mean anomaly
149.0899°
Eccentric anomaly
149.11947°
Mean motion
3.56618 °/min
Orbital period
100.95 mins
BSTAR
0.0020643
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #25 in the year 1999 (1999-05-10 UTC)
Did you know?
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
Loading observer location...
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 | 2025-10-22 04:06:05.163Z | 150.973° SSE | 2025-10-22 04:11:05.163Z | 59.352° ENE | 41.256° | 2025-10-22 04:15:05.163Z | 355.54° N |
| 5 mins | 2025-10-22 05:49:05.163Z | 243.785° WSW | 2025-10-22 05:51:05.163Z | 269.076° W | 15.205° | 2025-10-22 05:54:05.163Z | 304.24° NW |
| 6 mins | 2025-10-22 16:24:05.163Z | 58.935° ENE | 2025-10-22 16:26:05.163Z | 88.755° E | 21.669° | 2025-10-22 16:30:05.163Z | 143.631° SSE |
| 8 mins | 2025-10-22 18:03:05.163Z | 349.976° N | 2025-10-22 18:06:05.163Z | 297.628° NW | 33.181° | 2025-10-22 18:11:05.163Z | 222.43° SW |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
|---|