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.

Loading next visibility...

Iframe embed code

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

Optional secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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 (27 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: 11 hours ago

TLE from 11 hours ago

0 CZ-4B R/B
1 25942U 99057C   26226.14917026  .00000114  00000-0  50219-4 0  9997
2 25942  98.7178 279.3669 0096400  45.2312 315.6666 14.38451604403929

Epoch: 2026-08-14T03:34Z

TLE epoch observation values (Epoch: 2026-08-14T03:34:48.310Z)

Latitude

-0.00004°

Longitude

-96.91293°

Altitude

717.631 km

Speed

7.522 km/s

True Right ascension

18h 37m 28s

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

05:23:19

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

829.572 km

Perigee altitude

691.934 km

Semi-major axis

7,138.89 km

Eccentricity

0.00964

Inclination

98.7178°

RAAN

279.3669°

Arg. of periapsis

45.2312°

True anomaly

314.88794°

Mean anomaly

315.6666°

Eccentric anomaly

315.27794°

Mean motion

3.5983 °/min

Orbital period

100.05 mins

BSTAR

0.000050219

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

CZ-4 DEB, 26230 (Decayed)

CZ-4 DEB, 26250 (Decayed)

CZ-4 DEB, 35325 (Decayed)

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

CZ-4B R/B Visibility forecast

Loading observer location...
Set Observer location

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	2026-08-14 15:50:37.482Z	35.349° NE	2026-08-14 15:54:37.482Z	96.761° ESE	29.817°	2026-08-14 15:58:37.482Z	159.41° S
7 mins	2026-08-14 17:30:37.482Z	338.143° N	2026-08-14 17:33:37.482Z	289.328° WNW	24.218°	2026-08-14 17:37:37.482Z	237.447° WSW
7 mins	2026-08-15 03:05:37.482Z	134.076° SE	2026-08-15 03:08:37.482Z	69.392° E	34.834°	2026-08-15 03:12:37.482Z	1.432° NNE
4 mins	2026-08-15 04:46:37.482Z	249.062° W	2026-08-15 04:47:37.482Z	264.74° W	16.644°	2026-08-15 04:50:37.482Z	306.289° NW

Items per page:

1–4 of 4 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign in to view Co-orbital & Co-planar RSOs.

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 descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2026-08-14T03:34:48.310Z)

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: 11 hours ago