CBERS 1, 25940
Orbit data source: Space-Track
CBERS 1, 25940 is a CN and BR payload satellite in SSO that was launched on Thu, 14 Oct 1999 UTC via a CHANG ZHENG 4B launch vehicle from the Taiyaun Space Center, China (TSC). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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25940 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
Unknown / CHBZRelated business
Manufacturer
CAST
Mission
Civil Imaging
Bus & Motor
ZY, AOCS 20N
Mass
1,540 kg wet, ~1,450 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 4.5 m
Radar Cross Section
9.469 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 CBERS 1
1 25940U 99057A 25295.17488411 .00000404 00000-0 15237-3 0 9996
2 25940 98.8481 293.0706 0004722 353.4400 6.6723 14.36859948363330Epoch: 2025-10-22T04:11Z
TLE epoch observation values (Epoch: 2025-10-22T04:11:49.987Z)
Latitude
0.00002°
Longitude
-160.73995°
Altitude
768.472 km
Speed
7.472 km/s
True Right ascension
19h 32m 16s
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
05:20:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
769.408 km
Perigee altitude
762.661 km
Semi-major axis
7,144.172 km
Eccentricity
0.00047
Inclination
98.8481°
RAAN
293.0706°
Arg. of periapsis
353.44°
True anomaly
6.67859°
Mean anomaly
6.6723°
Eccentric anomaly
6.67545°
Mean motion
3.59431 °/min
Orbital period
100.16 mins
BSTAR
0.00015237
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Other satellites on launch #57 in the year 1999 (1999-10-14 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.CBERS 1 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 | 2025-10-22 13:08:01.498Z | 6.427° NNE | 2025-10-22 13:12:01.498Z | 271.471° WNW | 42.899° | 2025-10-22 13:16:01.498Z | 205.755° SW |
| 5 mins | 2025-10-22 22:45:01.498Z | 97.598° ESE | 2025-10-22 22:47:01.498Z | 70.249° E | 18.341° | 2025-10-22 22:50:01.498Z | 27.824° NE |
| 7 mins | 2025-10-23 00:23:01.498Z | 193.277° SSW | 2025-10-23 00:26:01.498Z | 257.644° W | 37.395° | 2025-10-23 00:30:01.498Z | 331.413° NNW |
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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