OBJECT D, 49318

Orbit data source: Space-Track

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Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.

OBJECT D, 49318 is a satellite owned by SISE (CN) in SSO that was launched on Thu, 14 Oct 2021 UTC via a CHANG ZHENG 2D launch vehicle from the Taiyaun Space Center, China (TSC). Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity.

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<iframe src="https://www.satcat.com/sats-embedded/49318?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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https://www.satcat.com/sats-embedded/49318?theme=dark&initialShowStats=false

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Identifier

49318, 2021-091D

Orbit

SSO

Country

CN / PRC

Related business

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

Manufacturer

Lizheng Sat

Mission

Operational Commercial Communications

Bus & Motor

JTSY, Unknown motor

Mass

103 kg wet, 103 kg dry

Launch date (UTC)

2021-10-14 (5 years ago)

Launch vehicle

CHANG ZHENG 2D

Launch site

Taiyaun Space Center, China (TSC)

Object type

Unknown

Shape & HBR

Box, 0.5 m

Radar Cross Section

0.625 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 21 hours ago

TLE from 21 hours ago

0 OBJECT D
1 49318U 21091D   26172.55671056 -.00000169  00000-0 -92988-4 0  9999
2 49318  97.4497 204.5208 0011060 323.7229  36.3189 14.00144727248693

Epoch: 2026-06-21T13:21Z

TLE epoch observation values (Epoch: 2026-06-21T13:21:39.792Z)

Latitude

-0.00004°

Longitude

94.34973°

Altitude

889.74 km

Speed

7.411 km/s

True Right ascension

13h 38m 04s

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

21:40:59

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

898.463 km

Perigee altitude

882.385 km

Semi-major axis

7,268.561 km

Eccentricity

0.00111

Inclination

97.4497°

RAAN

204.5208°

Arg. of periapsis

323.7229°

True anomaly

36.39405°

Mean anomaly

36.3189°

Eccentric anomaly

36.35647°

Mean motion

3.50244 °/min

Orbital period

102.79 mins

BSTAR

-0.000092988

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Other satellites on launch #91 in the year 2021 (2021-10-14 UTC)

OBJECT A, 49315 (Decayed)

OBJECT J, 49323 (Decayed)

OBJECT C, 49317 (Decayed)

OBJECT L, 49325 (Decayed)

OBJECT H, 49322 (Decayed)

OBJECT F, 49320 (Decayed)

OBJECT B, 49316

OBJECT G, 49321

OBJECT E, 49319

OBJECT K, 49324 (Decayed)

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OBJECT D 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.
9 mins	2026-06-22 13:57:57.052Z	36.445° NE	2026-06-22 14:02:57.052Z	97.153° ESE	24.345°	2026-06-22 14:06:57.052Z	146.309° SSE
8 mins	2026-06-22 15:40:57.052Z	348.379° N	2026-06-22 15:44:57.052Z	278.52° WNW	32.957°	2026-06-22 15:48:57.052Z	225.322° WSW
9 mins	2026-06-23 01:30:57.052Z	132.623° SE	2026-06-23 01:34:57.052Z	64.971° ENE	33.871°	2026-06-23 01:39:57.052Z	2.52° NNE
7 mins	2026-06-23 03:13:57.052Z	228.873° WSW	2026-06-23 03:16:57.052Z	273.291° WNW	23.299°	2026-06-23 03:20:57.052Z	320.44° NNW

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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 OBJECT D, 49318 on other resources

View OBJECT D, 49318 on Heavens-Above

View OBJECT D, 49318 on Keep Track

View OBJECT D, 49318 on Celestrak

View OBJECT D, 49318 on Gunter's Space Page

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

OBJECT D, 49318

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-06-21T13:21:39.792Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #91 in the year 2021 (2021-10-14 UTC)

OBJECT D Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT D, 49318 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 21 hours ago