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YAOGAN 20A, 40109

Orbit data source: Space-Track

YAOGAN 20A, 40109 is a payload satellite owned by PLA GAD (CN) in LEO that was launched on Sat, 09 Aug 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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<iframe src="https://www.satcat.com/sats-embedded/40109?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/40109?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

40109, 2014-047A

Orbit

LEO

Last TLE update

12 hours ago

Origin

Equipment Development Department of the Central Military Commission (China) (CN / PRC)

Manufacturer

CAST

Mission

Operational Defense Sigint

Bus & Motor

JB-8, Unknown motor

Mass

~500 kg wet, ~500 kg dry

Launch date (UTC)

2014-08-09 (11 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

TLE from 12 hours ago

0 YAOGAN 20A
1 40109U 14047A   25199.85919069 -.00000029  00000-0  70476-4 0  9993
2 40109  63.3810 158.3082 0361087  12.9255 348.0730 13.45394379537595

Epoch: 2025-07-18T20:37Z

TLE epoch observation values (Epoch: 2025-07-18T20:37:14.075Z)

Latitude

-0.00002°

Longitude

-87.90506°

Altitude

827.615 km

Speed

7.57 km/s

True Right ascension

10h 33m 13s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-20.27479°

Longitude

101.45462°

Altitude

1,361.345 km

Speed

7.049 km/s

Apparent Right ascension

01h 47m 44s

Apparent Declination

-59° 45' 23"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

21:08:38

Azimuth

148.601° SSE

Elevation

-24.884°

Doppler factor

Orbital elements

Apogee altitude

1,357.677 km

Perigee altitude

818.486 km

Semi-major axis

7,466.218 km

Eccentricity

0.03611

Inclination

63.381°

RAAN

158.3082°

Arg. of periapsis

12.9255°

True anomaly

347.17848°

Mean anomaly

348.073°

Eccentric anomaly

347.62979°

Mean motion

3.36428 °/min

Orbital period

107.01 mins

BSTAR

0.000070476

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Other satellites on launch #47 in the year 2014 (2014-08-09 UTC)

CZ-4C DEB, 49945 (Decayed)

CZ-4C DEB, 49946 (Decayed)

YAOGAN 20A 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	2025-07-19 09:43:34.406Z	289.176° WNW	2025-07-19 09:47:34.406Z	254.442° W	18.673°	2025-07-19 09:52:34.406Z	213.235° SW
5 mins	2025-07-19 21:44:34.406Z	134.369° SE	2025-07-19 21:46:34.406Z	106.985° ESE	18.741°	2025-07-19 21:49:34.406Z	71.087° E
9 mins	2025-07-19 23:32:34.406Z	234.869° WSW	2025-07-19 23:36:34.406Z	323.453° NNW	40.148°	2025-07-19 23:41:34.406Z	26.41° NE
4 mins	2025-07-20 01:26:34.406Z	314.781° NW	2025-07-20 01:28:34.406Z	336.771° NNW	13.901°	2025-07-20 01:30:34.406Z	357.136° N
6 mins	2025-07-20 05:13:34.406Z	6.93° NNE	2025-07-20 05:15:34.406Z	26.231° NE	15.91°	2025-07-20 05:19:34.406Z	61.844° ENE
13 mins	2025-07-20 07:02:34.406Z	337.412° NNW	2025-07-20 07:07:34.406Z	37.117° NE	39.625°	2025-07-20 07:15:34.406Z	128.616° SE

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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Authenticating...

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Check out YAOGAN 20A, 40109 on other resources

View YAOGAN 20A, 40109 on NASA - NSSDCA Website

View YAOGAN 20A, 40109 on Heavens-Above

View YAOGAN 20A, 40109 on Keep Track

View YAOGAN 20A, 40109 on Celestrak

View YAOGAN 20A, 40109 on Gunter's Space Page

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