Showing default

YAOGAN 25B, 40339

Orbit data source: Space-Track

YAOGAN 25B, 40339 is a payload satellite owned by PLA GAD (CN) in LEO that was launched on Wed, 10 Dec 2014 UTC via a CHANG ZHENG 4C launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/40339?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/40339?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

40339, 2014-080B

Orbit

LEO

Country

CN / PRC

Related business

Equipment Development Department of the Central Military Commission (PLA) (CN)

Manufacturer

CAST

Mission

Operational Defense Sigint

Bus & Motor

Unknown

Mass

~500 kg wet, ~500 kg dry

Launch date (UTC)

2014-12-10 (12 years ago)

Launch vehicle

CHANG ZHENG 4C

Launch site

Jiuquan Satellite Launch Center, China (JSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 0.5 m

Radar Cross Section

0.446 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 5 hours ago

TLE from 5 hours ago

0 YAOGAN 25B
1 40339U 14080B   26295.96000334 -.00000048  00000-0  46709-4 0  9994
2 40339  63.3897 341.6567 0378089   9.5703 351.2269 13.45441868582825

Epoch: 2026-10-22T23:02Z

TLE epoch observation values (Epoch: 2026-10-22T23:02:24.288Z)

Latitude

0°

Longitude

-35.33191°

Altitude

812.056 km

Speed

7.585 km/s

True Right ascension

22h 46m 37s

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

23:06:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,370.187 km

Perigee altitude

805.622 km

Semi-major axis

7,466.041 km

Eccentricity

0.03781

Inclination

63.3897°

RAAN

341.6567°

Arg. of periapsis

9.5703°

True anomaly

350.53379°

Mean anomaly

351.2269°

Eccentric anomaly

350.88367°

Mean motion

3.3644 °/min

Orbital period

107 mins

BSTAR

0.000046709

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #80 in the year 2014 (2014-12-10 UTC)

YAOGAN 25C DEB, 69733

YAOGAN 25C DEB, 69732

YAOGAN 25C DEB, 69731

CZ-4C DEB, 43419

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

YAOGAN 25B 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.
10 mins	2026-10-23 04:30:30.911Z	183.088° SSW	2026-10-23 04:35:30.911Z	101.451° ESE	42.197°	2026-10-23 04:40:30.911Z	46.102° ENE
8 mins	2026-10-23 06:22:30.911Z	268.624° W	2026-10-23 06:25:30.911Z	315.277° NNW	31.604°	2026-10-23 06:30:30.911Z	16.548° NNE
11 mins	2026-10-23 12:00:30.911Z	346.293° N	2026-10-23 12:05:30.911Z	33.779° NE	25.748°	2026-10-23 12:11:30.911Z	89.414° E
14 mins	2026-10-23 13:51:30.911Z	325.178° NNW	2026-10-23 13:57:30.911Z	189.423° SSW	85.365°	2026-10-23 14:05:30.911Z	150° SSE
8 mins	2026-10-23 15:43:30.911Z	284.619° WNW	2026-10-23 15:47:30.911Z	250.159° W	18.297°	2026-10-23 15:51:30.911Z	218.484° SW
6 mins	2026-10-24 03:43:30.911Z	140.61° SSE	2026-10-24 03:45:30.911Z	112.153° ESE	22.266°	2026-10-24 03:49:30.911Z	64.024° ENE

Items per page:

1–6 of 6 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 YAOGAN 25B, 40339 on other resources

View YAOGAN 25B, 40339 on NASA - NSSDCA Website

View YAOGAN 25B, 40339 on Heavens-Above

View YAOGAN 25B, 40339 on Keep Track

View YAOGAN 25B, 40339 on Celestrak

View YAOGAN 25B, 40339 on Gunter's Space Page

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

YAOGAN 25B, 40339

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-10-22T23:02:24.288Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #80 in the year 2014 (2014-12-10 UTC)

YAOGAN 25B Visibility forecast

Co-orbital & Co-planar RSOs

Check out YAOGAN 25B, 40339 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 hours ago