FENGYUN 1C DEB, 37921
Orbit data source: Space-Track
FENGYUN 1C DEB, 37921 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
37921 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: 7 hours ago
TLE from 7 hours ago
0 FENGYUN 1C DEB
1 37921U 99025ENW 25355.83014988 .00000391 00000-0 31229-3 0 9991
2 37921 99.0210 36.7092 0084320 74.0580 286.9853 13.95159889632744Epoch: 2025-12-21T19:55Z
TLE epoch observation values (Epoch: 2025-12-21T19:55:24.949Z)
Latitude
0.00002°
Longitude
7.21827°
Altitude
895.993 km
Speed
7.413 km/s
True Right ascension
02h 26m 50s
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
02:14:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
969.246 km
Perigee altitude
846.376 km
Semi-major axis
7,285.948 km
Eccentricity
0.00843
Inclination
99.021°
RAAN
36.7092°
Arg. of periapsis
74.058°
True anomaly
286.0584°
Mean anomaly
286.9853°
Eccentric anomaly
286.52213°
Mean motion
3.48991 °/min
Orbital period
103.15 mins
BSTAR
0.00031229
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 | 2025-12-22 15:26:14.059Z | 24.382° NE | 2025-12-22 15:31:14.059Z | 105.214° ESE | 39.75° | 2025-12-22 15:36:14.059Z | 178.032° S |
| 6 mins | 2025-12-22 17:10:14.059Z | 328.752° NNW | 2025-12-22 17:12:14.059Z | 302.828° NW | 19.263° | 2025-12-22 17:16:14.059Z | 254.577° W |
| 5 mins | 2025-12-23 01:22:14.059Z | 85.149° E | 2025-12-23 01:24:14.059Z | 61.202° ENE | 15.073° | 2025-12-23 01:27:14.059Z | 26.867° NE |
| 9 mins | 2025-12-23 03:01:14.059Z | 173.988° S | 2025-12-23 03:05:14.059Z | 225.884° WSW | 43.168° | 2025-12-23 03:10:14.059Z | 340.686° 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 |
|---|