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CBERS 1, 25940

Orbit data source: Space-Track

CBERS 1, 25940 is a 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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<iframe src="https://www.satcat.com/sats-embedded/25940?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/25940?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

25940, 1999-057A

Orbit

SSO

Last TLE update

11 hours ago

Origin

China Aerospace Science and Technology Corporation (CASC) (CN)

Manufacturer

CAST

Mission

Civil Imaging

Bus & Motor

ZY, AOCS 20N

Mass

1,540 kg wet, ~1,450 kg dry

Launch date (UTC)

1999-10-14 (26 years ago)

Launch vehicle

CHANG ZHENG 4B

Launch site

Taiyaun Space Center, China (TSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 9 m

Radar Cross Section

9.469 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 11 hours ago

0 CBERS 1
1 25940U 99057A   25141.55252784  .00000187  00000-0  79302-4 0  9992
2 25940  98.8383 135.2868 0006095  76.4123 283.7740 14.36769642341273

Epoch: 2025-05-21T13:15Z

TLE epoch observation values (Epoch: 2025-05-21T13:15:38.405Z)

Latitude

-0.0001°

Longitude

56.942°

Altitude

771.09 km

Speed

7.469 km/s

True Right ascension

09h 01m 08s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-57.74164°

Longitude

-136.7669°

Altitude

795.689 km

Speed

7.452 km/s

Apparent Right ascension

20h 49m 16s

Apparent Declination

-49° 34' 22"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

09:22:50

Azimuth

151.203° SSE

Elevation

-78.668°

Doppler factor

Orbital elements

Apogee altitude

770.689 km

Perigee altitude

761.979 km

Semi-major axis

7,144.471 km

Eccentricity

0.00061

Inclination

98.8383°

RAAN

135.2868°

Arg. of periapsis

76.4123°

True anomaly

Unknown

Mean anomaly

283.774°

Eccentric anomaly

Unknown

Mean motion

3.59408 °/min

Orbital period

100.16 mins

BSTAR

0.000079302

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Other satellites on launch #57 in the year 1999 (1999-10-14 UTC)

CZ-4 DEB, 26138 (Decayed)

CZ-4 DEB, 26139 (Decayed)

CZ-4 DEB, 26140

CZ-4 DEB, 26141 (Decayed)

CZ-4 DEB, 26142

CZ-4 DEB, 26143

CZ-4 DEB, 26144 (Decayed)

CZ-4 DEB, 26145 (Decayed)

CZ-4 DEB, 26148 (Decayed)

CZ-4 DEB, 26149 (Decayed)

CZ-4 DEB, 26150

CZ-4 DEB, 26151

CZ-4 DEB, 26152

CZ-4 DEB, 26153 (Decayed)

CBERS 1 Visibility forecast

Observer location: undefined°, undefined°

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.
7 mins	2025-05-22 11:35:44.742Z	50.308° ENE	2025-05-22 11:38:44.742Z	98.319° ESE	23.977°	2025-05-22 11:42:44.742Z	151.987° SSE
7 mins	2025-05-22 13:14:44.742Z	344.211° N	2025-05-22 13:17:44.742Z	289.29° WNW	29.601°	2025-05-22 13:21:44.742Z	230.076° WSW
8 mins	2025-05-22 22:49:44.742Z	127.62° SE	2025-05-22 22:52:44.742Z	80.821° E	30.372°	2025-05-22 22:57:44.742Z	3.556° NNE

Authenticating...

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Check out CBERS 1, 25940 on other resources

View CBERS 1, 25940 on NASA - NSSDCA Website

View CBERS 1, 25940 on Heavens-Above

View CBERS 1, 25940 on Keep Track

View CBERS 1, 25940 on Celestrak

View CBERS 1, 25940 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.