FENGYUN 1C DEB, 31738
Orbit data source: Space-Track
FENGYUN 1C DEB, 31738 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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31738 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: 4 days ago
TLE from 4 days ago
0 FENGYUN 1C DEB
1 31738U 99025CEM 26084.91737139 .00002448 00000-0 15082-2 0 9993
2 31738 99.3461 157.0889 0307418 184.1476 175.7123 13.85553679636865Epoch: 2026-03-25T22:01Z
TLE epoch observation values (Epoch: 2026-03-25T22:01:00.888Z)
Latitude
-0°
Longitude
3.46141°
Altitude
1,171.657 km
Speed
7.155 km/s
True Right ascension
10h 28m 21s
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
21:56:16
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,166.505 km
Perigee altitude
716.468 km
Semi-major axis
7,319.623 km
Eccentricity
0.03074
Inclination
99.3461°
RAAN
157.0889°
Arg. of periapsis
184.1476°
True anomaly
175.96594°
Mean anomaly
175.7123°
Eccentric anomaly
175.84007°
Mean motion
3.46585 °/min
Orbital period
103.87 mins
BSTAR
0.0015082
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-03-29 16:46:23.162Z | 47.475° ENE | 2026-03-29 16:49:23.162Z | 90.87° ESE | 22.699° | 2026-03-29 16:53:23.162Z | 148.878° SSE |
| 7 mins | 2026-03-29 18:29:23.162Z | 344.737° N | 2026-03-29 18:32:23.162Z | 290.572° WNW | 28.924° | 2026-03-29 18:36:23.162Z | 231.237° WSW |
| 11 mins | 2026-03-30 04:23:23.162Z | 152.994° SSE | 2026-03-30 04:28:23.162Z | 102.289° ESE | 42.947° | 2026-03-30 04:34:23.162Z | 351.45° N |
| 7 mins | 2026-03-30 06:08:23.162Z | 232.722° WSW | 2026-03-30 06:11:23.162Z | 262.975° W | 18.765° | 2026-03-30 06:15:23.162Z | 304.83° NW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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