CZ-3B R/B, 66991
Orbit data source: Space-Track
CZ-3B R/B, 66991 is space debris in HEO originally from a launch on Tue, 09 Dec 2025 UTC launched from the Xichang Space Center, China (XSC). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
66991 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
CALT
Mission
Spacecraft
Bus & Motor
CZ-3A STAGE 3, Unknown motor
Mass
~2,800 kg wet, ~2,800 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl + 1 Nozzle, 8.0 m
Radar Cross Section
32.704 m²
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 CZ-3B R/B
1 66991U 25290B 26097.50675757 .00098956 -25770-6 12541-2 0 9995
2 66991 28.0897 249.4274 6849224 265.8430 19.9041 2.90618613 3128Epoch: 2026-04-07T12:09Z
TLE epoch observation values (Epoch: 2026-04-07T12:09:43.854Z)
Latitude
-0°
Longitude
-128.87061°
Altitude
5,196.563 km
Speed
7.047 km/s
True Right ascension
16h 37m 22s
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
20:49:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
28,576.901 km
Perigee altitude
158.395 km
Semi-major axis
20,745.785 km
Eccentricity
0.68492
Inclination
28.0897°
RAAN
249.4274°
Arg. of periapsis
265.843°
True anomaly
94.23816°
Mean anomaly
19.9041°
Eccentric anomaly
49.93942°
Mean motion
0.72635 °/min
Orbital period
495.63 mins
BSTAR
0.0012541
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #290 in the year 2025 (2025-12-09 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.CZ-3B R/B Visibility forecast
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 334 mins | 2026-04-08 14:42:45.948Z | 191.775° SSW | 2026-04-08 16:23:45.948Z | 200.905° SSW | 43.945° | 2026-04-08 20:16:45.948Z | 139.335° SSE |
| 55 mins | 2026-04-09 13:47:45.948Z | 237.746° WSW | 2026-04-09 14:42:45.948Z | 226.141° WSW | 39.951° | 2026-04-09 14:42:45.948Z | 226.141° WSW |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|