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SHIJIAN 6 05A (SJ-6 05A), 49961

Orbit data source: Space-Track

SHIJIAN 6 05A (SJ-6 05A), 49961 is a payload satellite owned by CASC (CN) in SSO that was launched on Fri, 10 Dec 2021 UTC via a CHANG ZHENG 4B 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/49961?theme=dark&initialShowStats=false

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Identifier

49961, 2021-122A

Orbit

SSO

Country

CN / PRC

Related business

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

Manufacturer

SAST

Mission

Operational Defense Sigint

Bus & Motor

FY-1?, Unknown motor

Mass

~1,000 kg wet, ~1,000 kg dry

Launch date (UTC)

2021-12-10 (4 years ago)

Launch vehicle

CHANG ZHENG 4B

Launch site

Jiuquan Satellite Launch Center, China (JSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 4.3 m

Radar Cross Section

5.659 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 17 hours ago

TLE from 17 hours ago

0 SHIJIAN 6 05A (SJ-6 05A)
1 49961U 21122A   25352.83605294  .00001082  00000-0  94796-4 0  9991
2 49961  97.3868 325.4840 0001850  55.1731 304.9666 14.98586281221735

Epoch: 2025-12-18T20:03Z

TLE epoch observation values (Epoch: 2025-12-18T20:03:54.974Z)

Latitude

-0.00003°

Longitude

-63.1809°

Altitude

573.588 km

Speed

7.574 km/s

True Right ascension

21h 41m 56s

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

11:58:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

569.542 km

Perigee altitude

566.972 km

Semi-major axis

6,946.394 km

Eccentricity

0.00019

Inclination

97.3868°

RAAN

325.484°

Arg. of periapsis

55.1731°

True anomaly

304.94923°

Mean anomaly

304.9666°

Eccentric anomaly

304.95791°

Mean motion

3.7489 °/min

Orbital period

96.03 mins

BSTAR

0.000094796

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Other satellites on launch #122 in the year 2021 (2021-12-10 UTC)

CZ-4B R/B, 49964 (Decayed)

CZ-4B DEB, 49963 (Decayed)

SHIJIAN 6 05B (SJ-6 05B), 49962

CZ-4B DEB, 49965 (Decayed)

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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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SHIJIAN 6 05A (SJ-6 05A) 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.
6 mins	2025-12-19 21:50:39.134Z	132.231° SE	2025-12-19 21:53:39.134Z	67.023° ENE	29.869°	2025-12-19 21:56:39.134Z	9.777° NNE
6 mins	2025-12-20 11:06:39.134Z	20.36° NNE	2025-12-20 11:08:39.134Z	70.103° E	43.358°	2025-12-20 11:12:39.134Z	186.395° SSW

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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 SHIJIAN 6 05A (SJ-6 05A), 49961 on other resources

View SHIJIAN 6 05A (SJ-6 05A), 49961 on NASA - NSSDCA Website

View SHIJIAN 6 05A (SJ-6 05A), 49961 on Heavens-Above

View SHIJIAN 6 05A (SJ-6 05A), 49961 on Keep Track

View SHIJIAN 6 05A (SJ-6 05A), 49961 on Celestrak

View SHIJIAN 6 05A (SJ-6 05A), 49961 on Gunter's Space Page

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

SHIJIAN 6 05A (SJ-6 05A), 49961

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2025-12-18T20:03:54.974Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #122 in the year 2021 (2021-12-10 UTC)

SHIJIAN 6 05A (SJ-6 05A) Visibility forecast

Co-orbital & Co-planar RSOs

Check out SHIJIAN 6 05A (SJ-6 05A), 49961 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 17 hours ago