FENGYUN 1C DEB, 40999
Orbit data source: Space-Track
FENGYUN 1C DEB, 40999 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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40999 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: 1 month ago
TLE from 1 month ago
0 FENGYUN 1C DEB
1 40999U 99025EXD 26065.40967420 .00001175 00000-0 75113-3 0 9991
2 40999 99.1114 136.0847 0057385 25.7623 334.6383 14.04694555827358Epoch: 2026-03-06T09:49Z
TLE epoch observation values (Epoch: 2026-03-06T09:49:55.850Z)
Latitude
0.00002°
Longitude
-175.5441°
Altitude
842.877 km
Speed
7.451 km/s
True Right ascension
09h 04m 20s
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
15:27:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
916.403 km
Perigee altitude
833.162 km
Semi-major axis
7,252.919 km
Eccentricity
0.00574
Inclination
99.1114°
RAAN
136.0847°
Arg. of periapsis
25.7623°
True anomaly
334.3548°
Mean anomaly
334.6383°
Eccentric anomaly
334.49673°
Mean motion
3.51377 °/min
Orbital period
102.45 mins
BSTAR
0.00075113
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-04-18 16:05:06.902Z | 61.307° ENE | 2026-04-18 16:08:06.902Z | 93.283° ESE | 13.2° | 2026-04-18 16:10:06.902Z | 114.786° SE |
| 10 mins | 2026-04-18 17:45:06.902Z | 10.406° NNE | 2026-04-18 17:49:06.902Z | 336.932° NNW | 43.643° | 2026-04-18 17:55:06.902Z | 200.873° SSW |
| 8 mins | 2026-04-19 03:34:06.902Z | 113.597° SE | 2026-04-19 03:38:06.902Z | 59.258° ENE | 24.837° | 2026-04-19 03:42:06.902Z | 11.574° NNE |
| 9 mins | 2026-04-19 05:15:06.902Z | 199.61° SSW | 2026-04-19 05:19:06.902Z | 271.365° WNW | 33.93° | 2026-04-19 05:24:06.902Z | 331.659° NNW |
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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