STARLINK-5857, 55946

Orbit data source: Space-Track

STARLINK-5857, 55946 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 17 Mar 2023 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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<iframe src="https://www.satcat.com/sats-embedded/55946?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/55946?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

55946, 2023-037AJ

Orbit

LEO

Country

Related business

SpaceX (US)

Manufacturer

SpaceX/Seattle

Mission

Operational Commercial Communications

Bus & Motor

STARLINK, Unknown motor

Mass

305 kg wet, ~290 kg dry

Launch date (UTC)

2023-03-17 (3 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 10.1 m

Radar Cross Section

11.087 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 STARLINK-5857
1 55946U 23037AJ  25346.84451851  .00001864  00000-0  16390-3 0  9991
2 55946  69.9985 143.3413 0003077 271.2695  88.8112 14.98338569150960

Epoch: 2025-12-12T20:16Z

TLE epoch observation values (Epoch: 2025-12-12T20:16:06.399Z)

Latitude

0.00003°

Longitude

117.53434°

Altitude

574.409 km

Speed

7.574 km/s

True Right ascension

09h 33m 21s

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

05:23:03

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

572.116 km

Perigee altitude

567.84 km

Semi-major axis

6,948.115 km

Eccentricity

0.00031

Inclination

69.9985°

RAAN

143.3413°

Arg. of periapsis

271.2695°

True anomaly

88.84645°

Mean anomaly

88.8112°

Eccentric anomaly

88.82883°

Mean motion

3.74751 °/min

Orbital period

96.06 mins

BSTAR

0.0001639

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Other satellites on launch #37 in the year 2023 (2023-03-17 UTC)

STARLINK-5898, 55929 (Decayed)

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STARLINK-5857 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	2025-12-13 12:26:39.711Z	226.689° WSW	2025-12-13 12:29:39.711Z	312.914° NW	37.782°	2025-12-13 12:32:39.711Z	11.303° NNE
5 mins	2025-12-13 20:51:39.711Z	17.254° NNE	2025-12-13 20:53:39.711Z	62.021° ENE	24.961°	2025-12-13 20:56:39.711Z	114.26° SE
5 mins	2025-12-13 22:29:39.711Z	293.734° NW	2025-12-13 22:31:39.711Z	254.798° W	22.14°	2025-12-13 22:34:39.711Z	203.783° SW

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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 STARLINK-5857, 55946 on other resources

View STARLINK-5857, 55946 on NASA - NSSDCA Website

View STARLINK-5857, 55946 on Heavens-Above

View STARLINK-5857, 55946 on Keep Track

View STARLINK-5857, 55946 on Celestrak

View STARLINK-5857, 55946 on Gunter's Space Page

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

STARLINK-5857, 55946

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2025-12-12T20:16:06.399Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #37 in the year 2023 (2023-03-17 UTC)

STARLINK-5857 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STARLINK-5857, 55946 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 11 hours ago