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: 12 hours ago
TLE from 12 hours ago
0 CBERS 1
1 25940U 99057A 25312.44449733 .00000374 00000-0 14226-3 0 9993
2 25940 98.8482 310.8172 0003920 295.2646 64.8133 14.36873911365812Epoch: 2025-11-08T10:40Z
TLE epoch observation values (Epoch: 2025-11-08T10:40:04.569Z)
Latitude
-0°
Longitude
102.92414°
Altitude
770.587 km
Speed
7.469 km/s
True Right ascension
20h 43m 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
19:23:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
768.789 km
Perigee altitude
763.188 km
Semi-major axis
7,144.126 km
Eccentricity
0.00039
Inclination
98.8482°
RAAN
310.8172°
Arg. of periapsis
295.2646°
True anomaly
64.85396°
Mean anomaly
64.8133°
Eccentric anomaly
64.83363°
Mean motion
3.59434 °/min
Orbital period
100.16 mins
BSTAR
0.00014226
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-11-09 00:08:57.019Z | 173.665° S | 2025-11-09 00:12:57.019Z | 219.854° SW | 42.65° | 2025-11-09 00:17:57.019Z | 341.117° N |
| 8 mins | 2025-11-09 12:19:57.019Z | 37.62° NE | 2025-11-09 12:23:57.019Z | 112.237° ESE | 30.997° | 2025-11-09 12:27:57.019Z | 165.321° S |
| 6 mins | 2025-11-09 13:59:57.019Z | 331.697° NNW | 2025-11-09 14:01:57.019Z | 300.001° NW | 22.872° | 2025-11-09 14:05:57.019Z | 243.367° WSW |
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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