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YUNHAI 2-1B, 43910

Orbit data source: Space-Track

YUNHAI 2-1B, 43910 is a payload satellite owned by CASC (CN) in LEO that was launched on Sat, 29 Dec 2018 UTC via a CHANG ZHENG 2D/YZ-3 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/43910?theme=dark&initialShowStats=false

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Identifier

43910, 2018-112B

Orbit

LEO

Country

CN / PRC

Related business

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

Manufacturer

DFH Shenzhen

Mission

Operational Defense Meteo Radio Occ.

Bus & Motor

YH-2, Unknown motor

Mass

~100 kg wet, ~100 kg dry

Launch date (UTC)

2018-12-29 (7 years ago)

Launch vehicle

CHANG ZHENG 2D/YZ-3

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

0.166 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 YUNHAI 2-1B
1 43910U 18112B   26124.83644865  .00000370  00000-0  20860-3 0  9998
2 43910  50.0114 291.8644 0004943  75.6304 284.5160 14.28998012384048

Epoch: 2026-05-04T20:04Z

TLE epoch observation values (Epoch: 2026-05-04T20:04:29.163Z)

Latitude

0.00001°

Longitude

128.02296°

Altitude

794.727 km

Speed

7.458 km/s

True Right ascension

19h 27m 27s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

16:31:46

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

799.366 km

Perigee altitude

792.274 km

Semi-major axis

7,173.957 km

Eccentricity

0.00049

Inclination

50.0114°

RAAN

291.8644°

Arg. of periapsis

75.6304°

True anomaly

284.46116°

Mean anomaly

284.516°

Eccentric anomaly

284.48858°

Mean motion

3.57195 °/min

Orbital period

100.79 mins

BSTAR

0.0002086

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Other satellites on launch #112 in the year 2018 (2018-12-29 UTC)

YUNHAI 2-1C, 43911

YUNHAI 2-1D, 43912

YUNHAI 2-1F, 43915

CZ-2D R/B, 43916 (Decayed)

YUNHAI 2-1E, 43913

HONGYAN 1, 43914

YUNHAI 2-1A, 43909

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

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YUNHAI 2-1B 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.
8 mins	2026-05-05 13:00:18.181Z	189.745° SSW	2026-05-05 13:04:18.181Z	132.957° SE	27.686°	2026-05-05 13:08:18.181Z	76.655° E
9 mins	2026-05-05 14:45:18.181Z	251.559° W	2026-05-05 14:49:18.181Z	320.516° NNW	41.886°	2026-05-05 14:54:18.181Z	51.182° ENE
8 mins	2026-05-05 16:32:18.181Z	300.019° NW	2026-05-05 16:35:18.181Z	343.957° N	26.54°	2026-05-05 16:40:18.181Z	51.57° ENE
7 mins	2026-05-05 18:19:18.181Z	323.624° NNW	2026-05-05 18:22:18.181Z	14.398° NNE	28.421°	2026-05-05 18:26:18.181Z	71.899° E
9 mins	2026-05-05 20:04:18.181Z	306.829° NW	2026-05-05 20:08:18.181Z	40.086° NE	44.615°	2026-05-05 20:13:18.181Z	120.688° SE
7 mins	2026-05-05 21:50:18.181Z	269.83° W	2026-05-05 21:53:18.181Z	228.38° WSW	21.446°	2026-05-05 21:57:18.181Z	179.847° S

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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 YUNHAI 2-1B, 43910 on other resources

View YUNHAI 2-1B, 43910 on NASA - NSSDCA Website

View YUNHAI 2-1B, 43910 on Heavens-Above

View YUNHAI 2-1B, 43910 on Keep Track

View YUNHAI 2-1B, 43910 on Celestrak

View YUNHAI 2-1B, 43910 on Gunter's Space Page

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

YUNHAI 2-1B, 43910

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-05-04T20:04:29.163Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #112 in the year 2018 (2018-12-29 UTC)

YUNHAI 2-1B Visibility forecast

Co-orbital & Co-planar RSOs

Check out YUNHAI 2-1B, 43910 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago