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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Identifier
Orbit
Country
CN / CHBZ
BR / 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 26307.78042008 .00000075 00000-0 41101-4 0 9990
2 25940 98.8476 321.2804 0004096 315.5181 44.5675 14.37046453417568Epoch: 2026-11-03T18:43Z
TLE epoch observation values (Epoch: 2026-11-03T18:43:48.294Z)
Latitude
-0.00006°
Longitude
-2.70899°
Altitude
769.122 km
Speed
7.471 km/s
True Right ascension
21h 25m 07s
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
23:29:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
768.342 km
Perigee altitude
762.49 km
Semi-major axis
7,143.553 km
Eccentricity
0.00041
Inclination
98.8476°
RAAN
321.2804°
Arg. of periapsis
315.5181°
True anomaly
44.60045°
Mean anomaly
44.5675°
Eccentric anomaly
44.58397°
Mean motion
3.59478 °/min
Orbital period
100.15 mins
BSTAR
0.000041101
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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 | 2026-11-04 13:41:15.996Z | 22.201° NNE | 2026-11-04 13:45:15.996Z | 73.228° E | 58.208° | 2026-11-04 13:50:15.996Z | 181.175° SSW |
| 5 mins | 2026-11-04 15:22:15.996Z | 324.303° NNW | 2026-11-04 15:24:15.996Z | 297.706° NW | 16.617° | 2026-11-04 15:27:15.996Z | 260.876° W |
| 8 mins | 2026-11-05 00:56:15.996Z | 160.969° S | 2026-11-05 01:00:15.996Z | 9.528° NNE | 73.396° | 2026-11-05 01:04:15.996Z | 348.272° N |
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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