FENGYUN 1C DEB, 37477
Orbit data source: Space-Track
FENGYUN 1C DEB, 37477 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.
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37477 intel report (Beta)
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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: 12 hours ago
TLE from 12 hours ago
0 FENGYUN 1C DEB
1 37477U 99025EJX 25302.75718535 .00002242 00000-0 10769-2 0 9991
2 37477 98.6099 308.6666 0036660 234.1490 125.6280 14.19521729812905Epoch: 2025-10-29T18:10Z
TLE epoch observation values (Epoch: 2025-10-29T18:10:20.814Z)
Latitude
0.00003°
Longitude
-2.24587°
Altitude
845.341 km
Speed
7.422 km/s
True Right ascension
20h 34m 39s
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
01:53:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
850.529 km
Perigee altitude
797.722 km
Semi-major axis
7,202.262 km
Eccentricity
0.00367
Inclination
98.6099°
RAAN
308.6666°
Arg. of periapsis
234.149°
True anomaly
125.96855°
Mean anomaly
125.628°
Eccentric anomaly
125.79836°
Mean motion
3.55091 °/min
Orbital period
101.38 mins
BSTAR
0.0010769
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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 DEB 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-10-30 13:21:02.967Z | 14.971° NNE | 2025-10-30 13:26:02.967Z | 45.177° ENE | 44.192° | 2025-10-30 13:31:02.967Z | 191.422° SSW |
| 5 mins | 2025-10-30 23:07:02.967Z | 85.923° E | 2025-10-30 23:09:02.967Z | 60.309° ENE | 16.737° | 2025-10-30 23:12:02.967Z | 25.289° NE |
| 9 mins | 2025-10-31 00:45:02.967Z | 180.87° SSW | 2025-10-31 00:49:02.967Z | 286.466° WNW | 41.689° | 2025-10-31 00:54:02.967Z | 340.73° N |
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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