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: 8 hours ago
TLE from 8 hours ago
0 CBERS 1
1 25940U 99057A 25303.94898120 .00000353 00000-0 13509-3 0 9996
2 25940 98.8483 302.0871 0004254 325.4679 34.6229 14.36867052364599Epoch: 2025-10-30T22:46Z
TLE epoch observation values (Epoch: 2025-10-30T22:46:31.975Z)
Latitude
-0.00008°
Longitude
-79.04655°
Altitude
769.3 km
Speed
7.471 km/s
True Right ascension
20h 08m 20s
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
02:34:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
769.05 km
Perigee altitude
762.972 km
Semi-major axis
7,144.148 km
Eccentricity
0.00043
Inclination
98.8483°
RAAN
302.0871°
Arg. of periapsis
325.4679°
True anomaly
34.65061°
Mean anomaly
34.6229°
Eccentric anomaly
34.63675°
Mean motion
3.59433 °/min
Orbital period
100.16 mins
BSTAR
0.00013509
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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 | 2025-10-31 12:43:16.733Z | 20.148° NNE | 2025-10-31 12:47:16.733Z | 68.847° E | 42.001° | 2025-10-31 12:52:16.733Z | 184.852° SSW |
| 8 mins | 2025-10-31 23:58:16.733Z | 165.681° S | 2025-11-01 00:02:16.733Z | 339.875° N | 44.26° | 2025-11-01 00:06:16.733Z | 345.872° N |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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