FENGYUN 1C DEB, 35121
Orbit data source: Space-Track
FENGYUN 1C DEB, 35121 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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35121 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 35121U 99025DKZ 26242.82682635 -.00000107 00000-0 -38926-4 0 9995
2 35121 98.2744 88.6832 0158557 74.0549 287.8026 14.04907300647573Epoch: 2026-08-30T19:50Z
TLE epoch observation values (Epoch: 2026-08-30T19:50:37.796Z)
Latitude
-0.00004°
Longitude
172.00889°
Altitude
846.248 km
Speed
7.447 km/s
True Right ascension
05h 54m 43s
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
15:42:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
988.997 km
Perigee altitude
759.021 km
Semi-major axis
7,252.146 km
Eccentricity
0.01586
Inclination
98.2744°
RAAN
88.6832°
Arg. of periapsis
74.0549°
True anomaly
286.0624°
Mean anomaly
287.8026°
Eccentric anomaly
286.93352°
Mean motion
3.51434 °/min
Orbital period
102.44 mins
BSTAR
-0.000038926
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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 | 2026-09-17 02:03:36.830Z | 28.757° NE | 2026-09-17 02:08:36.830Z | 109.867° ESE | 46.828° | 2026-09-17 02:13:36.830Z | 171.058° S |
| 7 mins | 2026-09-17 03:46:36.830Z | 331.591° NNW | 2026-09-17 03:49:36.830Z | 288.315° WNW | 25.482° | 2026-09-17 03:53:36.830Z | 243.273° WSW |
| 8 mins | 2026-09-17 13:34:36.830Z | 157.253° SSE | 2026-09-17 13:37:36.830Z | 110.198° ESE | 72.822° | 2026-09-17 13:42:36.830Z | 350.789° N |
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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