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: 13 hours ago
TLE from 13 hours ago
0 CBERS 1
1 25940U 99057A 25258.26743468 .00000240 00000-0 96896-4 0 9990
2 25940 98.8462 255.1449 0006074 89.0609 271.1272 14.36826721358039Epoch: 2025-09-15T06:25Z
TLE epoch observation values (Epoch: 2025-09-15T06:25:06.356Z)
Latitude
-0.00004°
Longitude
164.39388°
Altitude
771.852 km
Speed
7.468 km/s
True Right ascension
17h 00m 34s
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
12:20:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
770.484 km
Perigee altitude
761.806 km
Semi-major axis
7,144.282 km
Eccentricity
0.00061
Inclination
98.8462°
RAAN
255.1449°
Arg. of periapsis
89.0609°
True anomaly
271.05761°
Mean anomaly
271.1272°
Eccentric anomaly
271.0924°
Mean motion
3.59423 °/min
Orbital period
100.16 mins
BSTAR
0.000096896
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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 | 2025-09-15 23:15:54.350Z | 135.344° SSE | 2025-09-15 23:19:54.350Z | 61.948° ENE | 34.041° | 2025-09-15 23:23:54.350Z | 2.312° NNE |
| 5 mins | 2025-09-16 00:56:54.350Z | 236.005° WSW | 2025-09-16 00:58:54.350Z | 266.981° W | 19.882° | 2025-09-16 01:01:54.350Z | 308.422° NW |
| 8 mins | 2025-09-16 13:04:54.350Z | 4.655° NNE | 2025-09-16 13:08:54.350Z | 270.935° WNW | 41.86° | 2025-09-16 13:12:54.350Z | 207.98° SW |
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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