FENGYUN 1C DEB, 31740
Orbit data source: Space-Track
FENGYUN 1C DEB, 31740 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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31740 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: 2 weeks ago
TLE from 2 weeks ago
0 FENGYUN 1C DEB
1 31740U 99025CEP 26109.29940650 .00002600 00000-0 78458-3 0 9996
2 31740 99.8265 304.9388 0024899 62.1312 117.2451 14.43345818669146Epoch: 2026-04-19T07:11Z
TLE epoch observation values (Epoch: 2026-04-19T07:11:08.721Z)
Latitude
0.24981°
Longitude
169.78962°
Altitude
758.5 km
Speed
7.471 km/s
True Right ascension
08h 19m 55s
True Declination
0° 14' 54"
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
19:02:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
762.385 km
Perigee altitude
726.915 km
Semi-major axis
7,122.787 km
Eccentricity
0.00249
Inclination
99.8265°
RAAN
304.9388°
Arg. of periapsis
62.1312°
True anomaly
117.49841°
Mean anomaly
117.2451°
Eccentric anomaly
117.37179°
Mean motion
3.61051 °/min
Orbital period
99.71 mins
BSTAR
0.00078458
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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 | 2026-05-04 12:29:34.797Z | 136.892° SSE | 2026-05-04 12:33:34.797Z | 76.226° E | 33.547° | 2026-05-04 12:37:34.797Z | 3.101° NNE |
| 5 mins | 2026-05-04 14:10:34.797Z | 235.375° WSW | 2026-05-04 14:12:34.797Z | 267.255° W | 19.268° | 2026-05-04 14:15:34.797Z | 308.539° NW |
| 8 mins | 2026-05-05 02:15:34.797Z | 12.038° NNE | 2026-05-05 02:18:34.797Z | 349.47° N | 43.617° | 2026-05-05 02:23:34.797Z | 200.123° SSW |
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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