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: 9 hours ago
TLE from 9 hours ago
0 CBERS 1
1 25940U 99057A 25342.59626317 .00000459 00000-0 17084-3 0 9996
2 25940 98.8481 341.8009 0004635 188.4447 171.6661 14.36900260370143Epoch: 2025-12-08T14:18Z
TLE epoch observation values (Epoch: 2025-12-08T14:18:37.137Z)
Latitude
-0.00006°
Longitude
49.55314°
Altitude
774.97 km
Speed
7.465 km/s
True Right ascension
22h 47m 12s
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
21:55:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
769.212 km
Perigee altitude
762.59 km
Semi-major axis
7,144.038 km
Eccentricity
0.00046
Inclination
98.8481°
RAAN
341.8009°
Arg. of periapsis
188.4447°
True anomaly
171.67379°
Mean anomaly
171.6661°
Eccentric anomaly
171.66995°
Mean motion
3.59441 °/min
Orbital period
100.16 mins
BSTAR
0.00017084
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Other satellites on launch #57 in the year 1999 (1999-10-14 UTC)
Did you know?
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 | 2025-12-09 00:26:21.865Z | 182.358° SSW | 2025-12-09 00:31:21.865Z | 265.235° W | 38.657° | 2025-12-09 00:35:21.865Z | 333.567° NNW |
| 7 mins | 2025-12-09 12:38:21.865Z | 34.499° NE | 2025-12-09 12:41:21.865Z | 102.985° ESE | 37.588° | 2025-12-09 12:45:21.865Z | 172.913° S |
| 5 mins | 2025-12-09 14:18:21.865Z | 319.844° NNW | 2025-12-09 14:20:21.865Z | 289.529° WNW | 18.18° | 2025-12-09 14:23:21.865Z | 252.73° W |
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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