STARLINK-5908, 55951

Orbit data source: Space-Track

STARLINK-5908, 55951 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 URL

https://www.satcat.com/sats-embedded/55951?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

55951, 2023-037AP

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: 9 hours ago

TLE from 9 hours ago

0 STARLINK-5908
1 55951U 23037AP  25349.83201471  .00000847  00000-0  78748-4 0  9996
2 55951  69.9989 135.7072 0003071 271.4757  88.6050 14.98345666151428

Epoch: 2025-12-15T19:58Z

TLE epoch observation values (Epoch: 2025-12-15T19:58:06.070Z)

Latitude

-0.00008°

Longitude

111.45695°

Altitude

574.38 km

Speed

7.574 km/s

True Right ascension

09h 02m 49s

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

03:10:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

572.09 km

Perigee altitude

567.822 km

Semi-major axis

6,948.093 km

Eccentricity

0.00031

Inclination

69.9989°

RAAN

135.7072°

Arg. of periapsis

271.4757°

True anomaly

88.64018°

Mean anomaly

88.605°

Eccentric anomaly

88.62259°

Mean motion

3.74753 °/min

Orbital period

96.06 mins

BSTAR

0.000078748

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

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STARLINK-5908 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	2025-12-16 10:30:54.151Z	154.856° SSE	2025-12-16 10:33:54.151Z	104.557° ESE	21.38°	2025-12-16 10:36:54.151Z	55.296° ENE
5 mins	2025-12-16 12:09:54.151Z	256.057° W	2025-12-16 12:11:54.151Z	298.671° NW	25.731°	2025-12-16 12:14:54.151Z	356.444° N
6 mins	2025-12-16 20:33:54.151Z	357.38° N	2025-12-16 20:35:54.151Z	49.771° ENE	37.019°	2025-12-16 20:39:54.151Z	137.396° SSE

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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-5908, 55951 on other resources

View STARLINK-5908, 55951 on NASA - NSSDCA Website

View STARLINK-5908, 55951 on Heavens-Above

View STARLINK-5908, 55951 on Keep Track

View STARLINK-5908, 55951 on Celestrak

View STARLINK-5908, 55951 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-5908, 55951

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2025-12-15T19:58:06.070Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

STARLINK-5908 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STARLINK-5908, 55951 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 9 hours ago