STARLINK-5918, 55939

Orbit data source: Space-Track

STARLINK-5918, 55939 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/55939?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

55939, 2023-037AB

Orbit

LEO

Last TLE update

22 hours ago

Origin

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 (2 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, 9 m

Radar Cross Section

11.087 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 22 hours ago

0 STARLINK-5918
1 55939U 23037AB  25196.64292979 -.00000397  00000-0 -25448-4 0  9995
2 55939  69.9997 162.1032 0002773 269.1480  90.9361 14.98330556128470

Epoch: 2025-07-15T15:25Z

TLE epoch observation values (Epoch: 2025-07-15T15:25:49.133Z)

Latitude

-0.00008°

Longitude

-3.08606°

Altitude

574.51 km

Speed

7.574 km/s

True Right ascension

10h 48m 24s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-1.57243°

Longitude

175.21126°

Altitude

574.57 km

Speed

7.574 km/s

Apparent Right ascension

19h 42m 20s

Apparent Declination

-40° 52' 02"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

01:42:03

Azimuth

236.399° WSW

Elevation

-24.779°

Doppler factor

Orbital elements

Apogee altitude

571.929 km

Perigee altitude

568.076 km

Semi-major axis

6,948.139 km

Eccentricity

0.00028

Inclination

69.9997°

RAAN

162.1032°

Arg. of periapsis

269.148°

True anomaly

Unknown

Mean anomaly

90.9361°

Eccentric anomaly

Unknown

Mean motion

3.74749 °/min

Orbital period

96.06 mins

BSTAR

-0.000025448

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

STARLINK-5918 Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-16 22:00:01.901Z	145.483° SSE	2025-07-16 22:03:01.901Z	99.202° ESE	16.729°	2025-07-16 22:05:01.901Z	67.717° E
6 mins	2025-07-16 23:38:01.901Z	239.15° WSW	2025-07-16 23:41:01.901Z	308.571° NW	30.952°	2025-07-16 23:44:01.901Z	4.332° NNE
5 mins	2025-07-17 08:03:01.901Z	9.681° NNE	2025-07-17 08:05:01.901Z	63.9° ENE	31.345°	2025-07-17 08:08:01.901Z	124.159° SE

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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Authenticating...

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Check out STARLINK-5918, 55939 on other resources

View STARLINK-5918, 55939 on NASA - NSSDCA Website

View STARLINK-5918, 55939 on Heavens-Above

View STARLINK-5918, 55939 on Keep Track

View STARLINK-5918, 55939 on Celestrak

View STARLINK-5918, 55939 on Gunter's Space Page

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