FENGYUN 1C DEB, 31491
Orbit data source: Space-Track
FENGYUN 1C DEB, 31491 is space debris in SSO originally from a launch on Mon, 10 May 1999 UTC launched from the Taiyaun Space Center, China (TSC). Fengyun 1C debris stems from the Chinese weather satellite Fengyun-1C, which was intentionally destroyed by a Chinese anti-satellite missile in 2007. This event dramatically increased the amount of space debris, with thousands of trackable fragments posing hazards to satellites and human spaceflight. The Fengyun 1C debris cloud has become a focal point in discussions about space sustainability and the need for international regulations to prevent the creation of new debris.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
31491 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 FENGYUN 1C DEB
1 31491U 99025BWE 25352.20970644 .00002896 00000-0 14383-2 0 9998
2 31491 99.3072 261.0688 0051113 253.2120 106.3442 14.17299530638050Epoch: 2025-12-18T05:01Z
TLE epoch observation values (Epoch: 2025-12-18T05:01:58.636Z)
Latitude
-0°
Longitude
98.50599°
Altitude
847.941 km
Speed
7.423 km/s
True Right ascension
17h 24m 16s
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
23:33:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
868.543 km
Perigee altitude
794.84 km
Semi-major axis
7,209.829 km
Eccentricity
0.00511
Inclination
99.3072°
RAAN
261.0688°
Arg. of periapsis
253.212°
True anomaly
106.90522°
Mean anomaly
106.3442°
Eccentric anomaly
106.62481°
Mean motion
3.54532 °/min
Orbital period
101.54 mins
BSTAR
0.0014383
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 DEB 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-12-20 06:44:49.404Z | 21.845° NNE | 2025-12-20 06:49:49.404Z | 95.58° ESE | 41.444° | 2025-12-20 06:54:49.404Z | 181.994° SSW |
| 5 mins | 2025-12-20 08:27:49.404Z | 323.583° NNW | 2025-12-20 08:29:49.404Z | 297.122° NW | 17.537° | 2025-12-20 08:32:49.404Z | 261.169° W |
| 4 mins | 2025-12-20 16:31:49.404Z | 78.731° E | 2025-12-20 16:33:49.404Z | 54.609° ENE | 14.755° | 2025-12-20 16:35:49.404Z | 31.912° NE |
| 9 mins | 2025-12-20 18:08:49.404Z | 170.559° S | 2025-12-20 18:12:49.404Z | 226.773° WSW | 44.243° | 2025-12-20 18:17:49.404Z | 342.271° N |
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 |
|---|
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 descending order |
|---|