STARLINK-5900, 55948

Orbit data source: Space-Track

STARLINK-5900, 55948 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/55948?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

55948, 2023-037AL

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: 21 hours ago

TLE from 21 hours ago

0 STARLINK-5900
1 55948U 23037AL  25350.06129573  .00000752  00000-0  70765-4 0  9997
2 55948  69.9998 115.4271 0003356 268.1603  91.9172 14.98338609151947

Epoch: 2025-12-16T01:28Z

TLE epoch observation values (Epoch: 2025-12-16T01:28:15.951Z)

Latitude

0.00003°

Longitude

8.40973°

Altitude

574.532 km

Speed

7.574 km/s

True Right ascension

07h 41m 42s

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

20:43:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

572.309 km

Perigee altitude

567.646 km

Semi-major axis

6,948.115 km

Eccentricity

0.00034

Inclination

69.9998°

RAAN

115.4271°

Arg. of periapsis

268.1603°

True anomaly

91.95563°

Mean anomaly

91.9172°

Eccentric anomaly

91.93642°

Mean motion

3.74751 °/min

Orbital period

96.06 mins

BSTAR

0.000070765

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

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STARLINK-5900 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.
7 mins	2025-12-17 09:38:51.252Z	191.654° SSW	2025-12-17 09:41:51.252Z	140.594° SSE	41.675°	2025-12-17 09:45:51.252Z	31.091° NE
6 mins	2025-12-17 19:41:51.252Z	322.08° NNW	2025-12-17 19:44:51.252Z	235.092° WSW	39.542°	2025-12-17 19:47:51.252Z	174.018° 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 STARLINK-5900, 55948 on other resources

View STARLINK-5900, 55948 on NASA - NSSDCA Website

View STARLINK-5900, 55948 on Heavens-Above

View STARLINK-5900, 55948 on Keep Track

View STARLINK-5900, 55948 on Celestrak

View STARLINK-5900, 55948 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-5900, 55948

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: 2025-12-16T01:28:15.951Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

STARLINK-5900 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STARLINK-5900, 55948 on other resources

Documentation

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