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: 15 hours ago
TLE from 15 hours ago
0 CBERS 1
1 25940U 99057A 25260.98329762 .00000200 00000-0 83511-4 0 9995
2 25940 98.8465 257.9355 0006081 82.5247 277.6629 14.36827583358429Epoch: 2025-09-17T23:35Z
TLE epoch observation values (Epoch: 2025-09-17T23:35:56.914Z)
Latitude
-0.00002°
Longitude
-93.20306°
Altitude
771.355 km
Speed
7.469 km/s
True Right ascension
17h 11m 44s
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
07:56:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
770.487 km
Perigee altitude
761.798 km
Semi-major axis
7,144.279 km
Eccentricity
0.00061
Inclination
98.8465°
RAAN
257.9355°
Arg. of periapsis
82.5247°
True anomaly
277.59383°
Mean anomaly
277.6629°
Eccentric anomaly
277.62837°
Mean motion
3.59423 °/min
Orbital period
100.16 mins
BSTAR
0.000083511
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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 | 2025-09-18 23:07:24.897Z | 132.536° SE | 2025-09-18 23:11:24.897Z | 78.1° E | 30.053° | 2025-09-18 23:15:24.897Z | 9.138° NNE |
| 6 mins | 2025-09-19 00:48:24.897Z | 224.888° SW | 2025-09-19 00:50:24.897Z | 256.53° W | 23.047° | 2025-09-19 00:54:24.897Z | 315.728° NNW |
| 8 mins | 2025-09-19 12:57:24.897Z | 8.952° NNE | 2025-09-19 13:00:24.897Z | 328.771° NNW | 43.802° | 2025-09-19 13:05:24.897Z | 200.622° SSW |
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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