OBJECT E, 55137

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 E, 55137 is a satellite owned by Hangtian Tianmu (CN) in SSO that was launched on Mon, 09 Jan 2023 UTC via a GUSHENXING 1 launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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/55137?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/55137?theme=dark&initialShowStats=false

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Identifier

55137, 2023-003E

Orbit

SSO

Country

CN / PRC

Related business

China Aerospace Science and Industry Corporation (CASIC) (CN)

Manufacturer

Hangtian Tianmu

Mission

Operational Commercial Weather

Bus & Motor

TIANMU, Unknown motor

Mass

50 kg wet, ~50 kg dry

Launch date (UTC)

2023-01-09 (3 years ago)

Launch vehicle

GUSHENXING 1

Launch site

Jiuquan Satellite Launch Center, China (JSC)

Object type

Unknown

Shape & HBR

Box, 0.8 m

Radar Cross Section

2.000 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 23 hours ago

TLE from 23 hours ago

0 OBJECT E
1 55137U 23003E   26172.49179889  .00019853  00000-0  29351-3 0  9991
2 55137  97.1430 247.9200 0005182 103.5453 256.6379 15.55335727192933

Epoch: 2026-06-21T11:48Z

TLE epoch observation values (Epoch: 2026-06-21T11:48:11.424Z)

Latitude

-0.00005°

Longitude

161.18111°

Altitude

405.136 km

Speed

7.667 km/s

True Right ascension

16h 31m 40s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

21:29:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

401.596 km

Perigee altitude

394.573 km

Semi-major axis

6,776.222 km

Eccentricity

0.00052

Inclination

97.143°

RAAN

247.92°

Arg. of periapsis

103.5453°

True anomaly

256.58013°

Mean anomaly

256.6379°

Eccentric anomaly

256.60902°

Mean motion

3.891 °/min

Orbital period

92.52 mins

BSTAR

0.00029351

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Other satellites on launch #3 in the year 2023 (2023-01-09 UTC)

OBJECT D, 55136 (Decayed)

OBJECT C, 55135

OBJECT A, 55133 (Decayed)

OBJECT B, 55134 (Decayed)

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OBJECT E 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.
5 mins	2026-06-22 17:41:30.901Z	21.48° NNE	2026-06-22 17:44:30.901Z	105.52° ESE	38.701°	2026-06-22 17:46:30.901Z	173.43° 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 OBJECT E, 55137 on other resources

View OBJECT E, 55137 on Heavens-Above

View OBJECT E, 55137 on Keep Track

View OBJECT E, 55137 on Celestrak

View OBJECT E, 55137 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 E, 55137

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 23 hours ago

TLE from 23 hours ago

TLE epoch observation values (Epoch: 2026-06-21T11:48:11.424Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #3 in the year 2023 (2023-01-09 UTC)

OBJECT E Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT E, 55137 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 23 hours ago