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.
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66991 intel report (Beta)
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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, Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 CZ-3B R/B
1 66991U 25290B 26240.51418555 .00054258 99267-6 20585-2 0 9992
2 66991 28.0341 176.1464 6768877 25.8439 356.1049 2.99719422 7358Epoch: 2026-08-28T12:20Z
TLE epoch observation values (Epoch: 2026-08-28T12:20:25.631Z)
Latitude
0.00025°
Longitude
14.3127°
Altitude
461.636 km
Speed
9.845 km/s
True Right ascension
11h 44m 37s
True Declination
0° 00' 01"
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
11:37:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
27,702.457 km
Perigee altitude
188.707 km
Semi-major axis
20,323.719 km
Eccentricity
0.67689
Inclination
28.0341°
RAAN
176.1464°
Arg. of periapsis
25.8439°
True anomaly
333.33708°
Mean anomaly
356.1049°
Eccentric anomaly
348.12287°
Mean motion
0.7491 °/min
Orbital period
480.58 mins
BSTAR
0.0020585
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Other satellites on launch #290 in the year 2025 (2025-12-09 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.CZ-3B R/B 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. |
|---|---|---|---|---|---|---|---|
| 361 mins | 2026-08-29 04:40:53.001Z | 259.369° W | 2026-08-29 04:56:53.001Z | 185.158° SSW | 39.523° | 2026-08-29 10:41:53.001Z | 162.041° S |
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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