FENGYUN 1C DEB, 31735
Orbit data source: Space-Track
FENGYUN 1C DEB, 31735 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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31735 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: 1 day ago
TLE from 1 day ago
0 FENGYUN 1C DEB
1 31735U 99025CEJ 25321.03753601 .00002623 00000-0 78922-3 0 9996
2 31735 98.5799 64.2155 0059619 2.5470 357.6012 14.42445998962943Epoch: 2025-11-17T00:54Z
TLE epoch observation values (Epoch: 2025-11-17T00:54:03.111Z)
Latitude
0.00003°
Longitude
-5.64119°
Altitude
710.907 km
Speed
7.523 km/s
True Right ascension
04h 16m 51s
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
07:25:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
790.033 km
Perigee altitude
705.068 km
Semi-major axis
7,125.688 km
Eccentricity
0.00596
Inclination
98.5799°
RAAN
64.2155°
Arg. of periapsis
2.547°
True anomaly
357.57239°
Mean anomaly
357.6012°
Eccentric anomaly
357.58682°
Mean motion
3.6083 °/min
Orbital period
99.77 mins
BSTAR
0.00078922
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-11-18 19:06:08.523Z | 37.793° NE | 2025-11-18 19:10:08.523Z | 92.991° ESE | 26.271° | 2025-11-18 19:14:08.523Z | 152.471° SSE |
| 7 mins | 2025-11-18 20:46:08.523Z | 340.45° N | 2025-11-18 20:49:08.523Z | 286.274° WNW | 28.034° | 2025-11-18 20:53:08.523Z | 231.805° WSW |
| 7 mins | 2025-11-19 06:19:08.523Z | 124.847° SE | 2025-11-19 06:22:08.523Z | 69.717° E | 29.834° | 2025-11-19 06:26:08.523Z | 6.744° NNE |
| 6 mins | 2025-11-19 07:58:08.523Z | 221.647° SW | 2025-11-19 08:01:08.523Z | 269.828° W | 21.706° | 2025-11-19 08:04:08.523Z | 313.209° 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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