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: 15 hours ago
TLE from 15 hours ago
0 CBERS 1
1 25940U 99057A 25259.03344785 .00000176 00000-0 75325-4 0 9997
2 25940 98.8462 255.9320 0006072 87.2002 272.9878 14.36826583358149Epoch: 2025-09-16T00:48Z
TLE epoch observation values (Epoch: 2025-09-16T00:48:09.894Z)
Latitude
-0.00003°
Longitude
-111.33878°
Altitude
771.712 km
Speed
7.468 km/s
True Right ascension
17h 03m 43s
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
08:45:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
770.483 km
Perigee altitude
761.807 km
Semi-major axis
7,144.282 km
Eccentricity
0.00061
Inclination
98.8462°
RAAN
255.932°
Arg. of periapsis
87.2002°
True anomaly
272.91831°
Mean anomaly
272.9878°
Eccentric anomaly
272.95306°
Mean motion
3.59422 °/min
Orbital period
100.16 mins
BSTAR
0.000075325
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-09-16 22:41:16.074Z | 105.385° ESE | 2025-09-16 22:44:16.074Z | 64.513° ENE | 19.459° | 2025-09-16 22:47:16.074Z | 23.26° NE |
| 8 mins | 2025-09-17 00:19:16.074Z | 191.716° SSW | 2025-09-17 00:23:16.074Z | 271.307° WNW | 35.734° | 2025-09-17 00:27:16.074Z | 331.648° NNW |
| 8 mins | 2025-09-17 12:29:16.074Z | 26.108° NE | 2025-09-17 12:33:16.074Z | 113.627° SE | 39.93° | 2025-09-17 12:37:16.074Z | 178.178° S |
| 4 mins | 2025-09-17 14:10:16.074Z | 316.215° NNW | 2025-09-17 14:11:16.074Z | 302.098° NW | 16.487° | 2025-09-17 14:14:16.074Z | 262.654° W |
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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