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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.

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https://www.satcat.com/sats-embedded/40339?theme=dark&initialShowStats=false

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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: 22 hours ago

TLE from 22 hours ago

0 YAOGAN 25B
1 40339U 14080B   26172.50588265 -.00000241  00000-0 -16846-3 0  9996
2 40339  63.3899 299.7804 0367217   8.9738 351.7618 13.45433478566212

Epoch: 2026-06-21T12:08Z

TLE epoch observation values (Epoch: 2026-06-21T12:08:28.260Z)

Latitude

-0.00005°

Longitude

-152.04255°

Altitude

819.687 km

Speed

7.578 km/s

True Right ascension

19h 59m 07s

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

21:36:05

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,362.102 km

Perigee altitude

813.769 km

Semi-major axis

7,466.073 km

Eccentricity

0.03672

Inclination

63.3899°

RAAN

299.7804°

Arg. of periapsis

8.9738°

True anomaly

351.13022°

Mean anomaly

351.7618°

Eccentric anomaly

351.44896°

Mean motion

3.36438 °/min

Orbital period

107 mins

BSTAR

-0.00016846

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

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YAOGAN 25B 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.
10 mins	2026-06-22 11:30:03.103Z	254.573° W	2026-06-22 11:35:03.103Z	318.647° NNW	27.918°	2026-06-22 11:40:03.103Z	17.606° NNE
11 mins	2026-06-22 17:10:03.103Z	347.268° N	2026-06-22 17:15:03.103Z	35.958° NE	23.487°	2026-06-22 17:21:03.103Z	90.355° ESE
13 mins	2026-06-22 19:01:03.103Z	325.118° NNW	2026-06-22 19:07:03.103Z	171.433° S	44.75°	2026-06-22 19:14:03.103Z	149.965° SSE
8 mins	2026-06-22 20:53:03.103Z	283.316° WNW	2026-06-22 20:57:03.103Z	248.435° W	17.327°	2026-06-22 21:01:03.103Z	217.249° SW
7 mins	2026-06-23 08:52:03.103Z	149.386° SSE	2026-06-23 08:55:03.103Z	109.599° ESE	20.706°	2026-06-23 08:59:03.103Z	63.074° ENE

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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 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: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-06-21T12:08:28.260Z)

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: 22 hours ago