FENGYUN 1C DEB, 29957
Orbit data source: Space-Track
FENGYUN 1C DEB, 29957 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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29957 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
Sphere, Unknown HBR
Radar Cross Section
0.031 m², Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 FENGYUN 1C DEB
1 29957U 99025KF 25358.34510688 .00018843 00000-0 46739-2 0 9990
2 29957 98.9207 126.0170 0036625 144.4418 270.6119 14.51496545976602Epoch: 2025-12-24T08:16Z
TLE epoch observation values (Epoch: 2025-12-24T08:16:57.234Z)
Latitude
53.77138°
Longitude
-103.64107°
Altitude
729.382 km
Speed
7.496 km/s
True Right ascension
07h 34m 51s
True Declination
53° 36' 24"
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
12:49:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
743.881 km
Perigee altitude
691.903 km
Semi-major axis
7,096.029 km
Eccentricity
0.00366
Inclination
98.9207°
RAAN
126.017°
Arg. of periapsis
144.4418°
True anomaly
270.19222°
Mean anomaly
270.6119°
Eccentric anomaly
270.40206°
Mean motion
3.63095 °/min
Orbital period
99.15 mins
BSTAR
0.0046739
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-12-25 21:00:42.910Z | 35.39° NE | 2025-12-25 21:04:42.910Z | 106.799° ESE | 29.997° | 2025-12-25 21:07:42.910Z | 158.524° S |
| 6 mins | 2025-12-25 22:39:42.910Z | 335.117° NNW | 2025-12-25 22:42:42.910Z | 285.35° WNW | 20.943° | 2025-12-25 22:45:42.910Z | 244.528° WSW |
| 7 mins | 2025-12-26 08:08:42.910Z | 136.212° SSE | 2025-12-26 08:11:42.910Z | 86.059° E | 34.484° | 2025-12-26 08:15:42.910Z | 4.024° NNE |
| 4 mins | 2025-12-26 09:48:42.910Z | 240.821° WSW | 2025-12-26 09:50:42.910Z | 272.001° WNW | 17.869° | 2025-12-26 09:52:42.910Z | 300.46° NW |
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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