CZ-4B R/B, 25942

Orbit data source: Space-Track

CZ-4B R/B, 25942 is space debris in SSO originally from a launch on Thu, 14 Oct 1999 UTC launched from the Taiyaun Space Center, China (TSC). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/25942?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

25942, 1999-057C

Orbit

SSO

Country

CN / PRC

Related business

China National Space Administration (CN)

Manufacturer

SAST

Mission

Spacecraft

Bus & Motor

CZ-4 STAGE 3, Unknown motor

Mass

~1,000 kg wet, ~1,000 kg dry

Launch date (UTC)

1999-10-14 (26 years ago)

Launch vehicle

Unknown

Launch site

Taiyaun Space Center, China (TSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 2.5 m

Radar Cross Section

14.536 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 20 hours ago

TLE from 20 hours ago

0 CZ-4B R/B
1 25942U 99057C   25350.11307130  .00000348  00000-0  12319-3 0  9997
2 25942  98.7503  34.2505 0096549  40.3889 320.4415 14.38254279369271

Epoch: 2025-12-16T02:42Z

TLE epoch observation values (Epoch: 2025-12-16T02:42:49.360Z)

Latitude

0.00001°

Longitude

-91.45712°

Altitude

714.307 km

Speed

7.526 km/s

True Right ascension

02h 17m 00s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

21:39:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

830.34 km

Perigee altitude

692.476 km

Semi-major axis

7,139.545 km

Eccentricity

0.00965

Inclination

98.7503°

RAAN

34.2505°

Arg. of periapsis

40.3889°

True anomaly

319.73029°

Mean anomaly

320.4415°

Eccentric anomaly

320.08656°

Mean motion

3.5978 °/min

Orbital period

100.06 mins

BSTAR

0.00012319

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

CZ-4 DEB, 26426 (Decayed)

CZ-4 DEB, 26416 (Decayed)

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CZ-4B R/B 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.
7 mins	2025-12-17 02:13:41.930Z	121.571° SE	2025-12-17 02:16:41.930Z	78.285° E	24.368°	2025-12-17 02:20:41.930Z	13.043° NNE
6 mins	2025-12-17 03:53:41.930Z	218.887° SW	2025-12-17 03:55:41.930Z	254.87° W	25.211°	2025-12-17 03:59:41.930Z	320.142° NNW
8 mins	2025-12-17 16:01:41.930Z	15.323° NNE	2025-12-17 16:04:41.930Z	30.331° NE	44.271°	2025-12-17 16:09:41.930Z	193.403° SSW

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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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Check out CZ-4B R/B, 25942 on other resources

View CZ-4B R/B, 25942 on Heavens-Above

View CZ-4B R/B, 25942 on Keep Track

View CZ-4B R/B, 25942 on Celestrak

View CZ-4B R/B, 25942 on Gunter's Space Page

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

CZ-4B R/B, 25942

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2025-12-16T02:42:49.360Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

CZ-4B R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out CZ-4B R/B, 25942 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 20 hours ago