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SJ-21, 49330

Orbit data source: Space-Track

SJ-21, 49330 is a payload satellite in GEO that was launched on Sun, 24 Oct 2021 UTC via a CHANG ZHENG 3B launch vehicle from the Xichang Space Center, China (XSC). 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.

Not visible in the next 10 days

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/49330?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/49330?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

49330, 2021-094A

Orbit

GEO

Last TLE update

16 hours ago

Origin

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

Manufacturer

SAST?

Mission

Operational Defense Technology

Bus & Motor

SJ21, Unknown motor

Mass

~5,000 kg wet, ~2,500 kg dry

Launch date (UTC)

2021-10-24 (4 years ago)

Launch vehicle

CHANG ZHENG 3B

Launch site

Xichang Space Center, China (XSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 30 m

Radar Cross Section

34.063 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 16 hours ago

0 SJ-21
1 49330U 21094A   25156.91285896 -.00000348  00000-0  00000-0 0  9998
2 49330  10.4751  42.5894 0049540 180.3692 127.7476  1.00275934 13483

Epoch: 2025-06-05T21:54Z

TLE epoch observation values (Epoch: 2025-06-05T21:54:31.014Z)

Latitude

-8.17703°

Longitude

128.42921°

Altitude

35,914.726 km

Speed

3.065 km/s

True Right ascension

23h 26m 31s

True Declination

-8° 10' 08"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-0.38934°

Longitude

1.40285°

Altitude

35,575.725 km

Speed

3.09 km/s

Apparent Right ascension

14h 38m 37s

Apparent Declination

-5° 31' 01"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

23:27:57

Azimuth

295.843° NW

Elevation

-35.157°

Doppler factor

Orbital elements

Apogee altitude

35,995.334 km

Perigee altitude

35,577.567 km

Semi-major axis

42,164.588 km

Eccentricity

0.00495

Inclination

10.4751°

RAAN

42.5894°

Arg. of periapsis

180.3692°

True anomaly

Unknown

Mean anomaly

127.7476°

Eccentric anomaly

Unknown

Mean motion

0.25068 °/min

Orbital period

1,436.09 mins

BSTAR

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49330 neighbors

Authenticating...

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Other satellites on launch #94 in the year 2021 (2021-10-24 UTC)

CZ-3B R/B, 49331

SJ-21 AKM, 49382

SJ-21 Visibility

Observer location: undefined°, undefined°

SJ-21 is not visible in the next 10 days

Authenticating...

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Check out SJ-21, 49330 on other resources

View SJ-21, 49330 on NASA - NSSDCA Website

View SJ-21, 49330 on Heavens-Above

View SJ-21, 49330 on Keep Track

View SJ-21, 49330 on Celestrak

View SJ-21, 49330 on Gunter's Space Page

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