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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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<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

14 hours ago

Origin

China Aerospace Science and Technology Corporation (CASC) (Unknown / CHBZ)

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 14 hours ago

0 CBERS 1
1 25940U 99057A   25184.52024233  .00000162  00000-0  70660-4 0  9993
2 25940  98.8390 179.3992 0004102 316.8644  43.2219 14.36789684347447

Epoch: 2025-07-03T12:29Z

TLE epoch observation values (Epoch: 2025-07-03T12:29:08.937Z)

Latitude

-0.00006°

Longitude

70.32616°

Altitude

769.922 km

Speed

7.47 km/s

True Right ascension

11h 57m 35s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

34.43074°

Longitude

-102.98669°

Altitude

776.558 km

Speed

7.467 km/s

Apparent Right ascension

01h 17m 00s

Apparent Declination

0° 15' 03"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

14:20:47

Azimuth

24.115° NE

Elevation

-47.756°

Doppler factor

Orbital elements

Apogee altitude

769.198 km

Perigee altitude

763.337 km

Semi-major axis

7,144.405 km

Eccentricity

0.00041

Inclination

98.839°

RAAN

179.3992°

Arg. of periapsis

316.8644°

True anomaly

Unknown

Mean anomaly

43.2219°

Eccentric anomaly

Unknown

Mean motion

3.59413 °/min

Orbital period

100.16 mins

BSTAR

0.00007066

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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.
9 mins	2025-07-04 12:27:48.548Z	18.48° NNE	2025-07-04 12:31:48.548Z	77.657° E	43.757°	2025-07-04 12:36:48.548Z	188.429° SSW
8 mins	2025-07-04 23:42:48.548Z	169.943° S	2025-07-04 23:45:48.548Z	197.838° SSW	43.878°	2025-07-04 23:50:48.548Z	343.998° N

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.