FENGYUN 1C DEB, 33661
Orbit data source: Space-Track
FENGYUN 1C DEB, 33661 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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33661 intel report (Beta)
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Edit Public Description
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 months ago
TLE from 2 months ago
0 FENGYUN 1C DEB
1 33661U 99025DEW 25276.66802714 .00003312 00000-0 30104-2 0 9999
2 33661 98.4118 172.0200 0233768 342.6011 45.3584 13.72460477634968Epoch: 2025-10-03T16:01Z
TLE epoch observation values (Epoch: 2025-10-03T16:01:57.544Z)
Latitude
29.60113°
Longitude
-85.87439°
Altitude
875.423 km
Speed
7.477 km/s
True Right ascension
11h 08m 54s
True Declination
29° 27' 22"
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
12:19:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,160.153 km
Perigee altitude
815.762 km
Semi-major axis
7,366.094 km
Eccentricity
0.02338
Inclination
98.4118°
RAAN
172.02°
Arg. of periapsis
342.6011°
True anomaly
47.30394°
Mean anomaly
45.3584°
Eccentric anomaly
46.32718°
Mean motion
3.43311 °/min
Orbital period
104.86 mins
BSTAR
0.0030104
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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 | 2025-12-12 15:24:02.448Z | 119.57° SE | 2025-12-12 15:29:02.448Z | 70.215° E | 24.508° | 2025-12-12 15:34:02.448Z | 13.024° NNE |
| 10 mins | 2025-12-12 17:08:02.448Z | 191.58° SSW | 2025-12-12 17:13:02.448Z | 273.515° WNW | 37.792° | 2025-12-12 17:18:02.448Z | 333.974° NNW |
| 4 mins | 2025-12-13 04:10:02.448Z | 70.972° E | 2025-12-13 04:12:02.448Z | 96.253° ESE | 14.279° | 2025-12-13 04:14:02.448Z | 119.845° SE |
| 8 mins | 2025-12-13 05:52:02.448Z | 1.469° NNE | 2025-12-13 05:56:02.448Z | 267.568° W | 40.674° | 2025-12-13 06:00:02.448Z | 210.137° 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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