OBJECT C, 65546
Orbit data source: Space-Track
OBJECT C, 65546 is a satellite owned by CAST (CN) in LEO that was launched on Sat, 06 Sep 2025 UTC via a CHANG ZHENG 6A launch vehicle from the Taiyaun Space Center, China (TSC). Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity.
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65546 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
DFH
Mission
Operational Defense Sigint
Bus & Motor
YG40, Unknown motor
Mass
~500 kg wet, ~500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Box + 2 Pan, 1.1 m
Radar Cross Section
5.141 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 OBJECT C
1 65546U 25199C 26171.36971075 .00000129 00000-0 59690-4 0 9992
2 65546 85.9909 42.6618 0002411 87.9278 272.2181 14.12449966 40513Epoch: 2026-06-20T08:52Z
TLE epoch observation values (Epoch: 2026-06-20T08:52:23.008Z)
Latitude
-0.00006°
Longitude
0.98061°
Altitude
853.947 km
Speed
7.426 km/s
True Right ascension
02h 50m 38s
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
07:20:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
849.746 km
Perigee altitude
846.262 km
Semi-major axis
7,226.141 km
Eccentricity
0.00024
Inclination
85.9909°
RAAN
42.6618°
Arg. of periapsis
87.9278°
True anomaly
272.19049°
Mean anomaly
272.2181°
Eccentric anomaly
272.2043°
Mean motion
3.53332 °/min
Orbital period
101.89 mins
BSTAR
0.00005969
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Other satellites on launch #199 in the year 2025 (2025-09-06 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.OBJECT C 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-06-21 02:27:42.867Z | 28.236° NE | 2026-06-21 02:31:42.867Z | 77.981° E | 21.289° | 2026-06-21 02:35:42.867Z | 126.377° SE |
| 8 mins | 2026-06-21 04:10:42.867Z | 334.014° NNW | 2026-06-21 04:13:42.867Z | 285.485° WNW | 34.006° | 2026-06-21 04:18:42.867Z | 206.315° SW |
| 9 mins | 2026-06-21 15:35:42.867Z | 161.741° S | 2026-06-21 15:39:42.867Z | 98.114° ESE | 39.623° | 2026-06-21 15:44:42.867Z | 13.428° NNE |
| 5 mins | 2026-06-21 17:20:42.867Z | 261.057° W | 2026-06-21 17:22:42.867Z | 286.762° WNW | 17.009° | 2026-06-21 17:25:42.867Z | 322.206° NNW |
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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