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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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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 FENGYUN 1C DEB
1 31735U 99025CEJ 26252.55560762 .00001631 00000-0 48148-3 0 9996
2 31735 98.5905 2.9445 0059171 189.3370 170.6725 14.43913473 5647Epoch: 2026-09-09T13:20Z
TLE epoch observation values (Epoch: 2026-09-09T13:20:04.498Z)
Latitude
-0.00002°
Longitude
174.31978°
Altitude
790.158 km
Speed
7.437 km/s
True Right ascension
00h 11m 46s
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
13:18:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
784.853 km
Perigee altitude
700.584 km
Semi-major axis
7,120.855 km
Eccentricity
0.00592
Inclination
98.5905°
RAAN
2.9445°
Arg. of periapsis
189.337°
True anomaly
170.7816°
Mean anomaly
170.6725°
Eccentric anomaly
170.72713°
Mean motion
3.61198 °/min
Orbital period
99.67 mins
BSTAR
0.00048148
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-09-12 06:22:00.334Z | 99.133° ESE | 2026-09-12 06:24:00.334Z | 68.774° E | 22.875° | 2026-09-12 06:28:00.334Z | 15.822° NNE |
| 8 mins | 2026-09-12 07:59:00.334Z | 196.947° SSW | 2026-09-12 08:02:00.334Z | 245.902° WSW | 42.098° | 2026-09-12 08:07:00.334Z | 331.185° NNW |
| 7 mins | 2026-09-12 20:06:00.334Z | 27.476° NE | 2026-09-12 20:09:00.334Z | 98.008° ESE | 59.131° | 2026-09-12 20:13:00.334Z | 178.967° S |
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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