FENGYUN 1C DEB, 31639
Orbit data source: Space-Track
FENGYUN 1C DEB, 31639 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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31639 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
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 FENGYUN 1C DEB
1 31639U 99025CAV 26255.06223589 .00000078 00000-0 92702-4 0 9991
2 31639 98.7658 188.1096 0161825 122.8941 302.6945 13.85263477974724Epoch: 2026-09-12T01:29Z
TLE epoch observation values (Epoch: 2026-09-12T01:29:37.180Z)
Latitude
62.76244°
Longitude
157.29198°
Altitude
893.358 km
Speed
7.443 km/s
True Right ascension
11h 23m 05s
True Declination
62° 37' 29"
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
10:39:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,060.95 km
Perigee altitude
824.018 km
Semi-major axis
7,320.621 km
Eccentricity
0.01618
Inclination
98.7658°
RAAN
188.1096°
Arg. of periapsis
122.8941°
True anomaly
301.11689°
Mean anomaly
302.6945°
Eccentric anomaly
301.90741°
Mean motion
3.46514 °/min
Orbital period
103.89 mins
BSTAR
0.000092702
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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 | 2026-09-12 18:38:51.456Z | 127.196° SE | 2026-09-12 18:43:51.456Z | 68.058° E | 32.13° | 2026-09-12 18:48:51.456Z | 6.525° NNE |
| 8 mins | 2026-09-12 20:22:51.456Z | 207.567° SW | 2026-09-12 20:26:51.456Z | 271.69° WNW | 35.759° | 2026-09-12 20:30:51.456Z | 323.998° NNW |
| 5 mins | 2026-09-13 07:17:51.456Z | 69.346° E | 2026-09-13 07:19:51.456Z | 96.181° ESE | 17.69° | 2026-09-13 07:22:51.456Z | 131.481° SE |
| 9 mins | 2026-09-13 08:58:51.456Z | 359.187° N | 2026-09-13 09:02:51.456Z | 276.439° WNW | 53.848° | 2026-09-13 09:07:51.456Z | 212.297° SW |
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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