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ZINYUAN-3, 45939

Orbit data source: Space-Track

ZINYUAN-3, 45939 is a Chinese payload satellite in SSO that was launched on Sat, 25 Jul 2020 UTC via a CHANG ZHENG 4B launch vehicle from the Taiyaun Space Center, China (TSC). 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/45939?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/45939?theme=dark&initialShowStats=false

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Identifier

45939, 2020-051A

Orbit

SSO

Last TLE update

4 hours ago

Origin

China Aerospace Science and Technology Corporation (CASC) (CN / PRC)

Manufacturer

CAST

Mission

Operational Civil Imaging

Bus & Motor

ZY, AOCS 20N

Mass

2,400 kg wet, ~2,200 kg dry

Launch date (UTC)

2020-07-25 (5 years ago)

Launch vehicle

CHANG ZHENG 4B

Launch site

Taiyaun Space Center, China (TSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, Unknown HBR

Radar Cross Section

10.304 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 4 hours ago

0 ZINYUAN-3
1 45939U 20051A   25214.19014655  .00005249  00000-0  23606-3 0  9993
2 45939  97.3238 286.4378 0005267  79.9302 280.2528 15.21524349278855

Epoch: 2025-08-02T04:33Z

TLE epoch observation values (Epoch: 2025-08-02T04:33:48.661Z)

Latitude

-0.00007°

Longitude

-93.04482°

Altitude

503.694 km

Speed

7.613 km/s

True Right ascension

19h 05m 45s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

-4.63714°

Longitude

86.5219°

Altitude

505.997 km

Speed

7.61 km/s

Apparent Right ascension

08h 23m 00s

Apparent Declination

-23° 13' 43"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

22:15:59

Azimuth

63.489° ENE

Elevation

-60.922°

Doppler factor

Orbital elements

Apogee altitude

501.824 km

Perigee altitude

494.581 km

Semi-major axis

6,876.339 km

Eccentricity

0.00053

Inclination

97.3238°

RAAN

286.4378°

Arg. of periapsis

79.9302°

True anomaly

280.1934°

Mean anomaly

280.2528°

Eccentric anomaly

280.2231°

Mean motion

3.80634 °/min

Orbital period

94.58 mins

BSTAR

0.00023606

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Other satellites on launch #51 in the year 2020 (2020-07-25 UTC)

LONGXIA YAN 1, 45940 (Decayed)

TIANQI-10, 45941 (Decayed)

CZ-4B R/B, 45942 (Decayed)

CZ-4B DEB, 45943 (Decayed)

ZINYUAN-3 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.
7 mins	2025-08-02 17:44:41.620Z	10.876° NNE	2025-08-02 17:47:41.620Z	2.961° NNE	43.052°	2025-08-02 17:51:41.620Z	194.2° SSW
4 mins	2025-08-03 04:23:41.620Z	118.694° SE	2025-08-03 04:25:41.620Z	59.315° ENE	27.788°	2025-08-03 04:27:41.620Z	16.002° NNE

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 ZINYUAN-3, 45939 on other resources

View ZINYUAN-3, 45939 on NASA - NSSDCA Website

View ZINYUAN-3, 45939 on Heavens-Above

View ZINYUAN-3, 45939 on Keep Track

View ZINYUAN-3, 45939 on Celestrak

View ZINYUAN-3, 45939 on Gunter's Space Page

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