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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55939 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
305 kg wet, ~290 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 10.1 m
Radar Cross Section
11.087 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 STARLINK-5918
1 55939U 23037AB 26171.45118826 -.00001397 00000-0 -10937-3 0 9993
2 55939 69.9996 25.3296 0002808 267.5608 92.5229 14.98319132179377Epoch: 2026-06-20T10:49Z
TLE epoch observation values (Epoch: 2026-06-20T10:49:42.665Z)
Latitude
-0.00009°
Longitude
-45.76383°
Altitude
574.6 km
Speed
7.574 km/s
True Right ascension
01h 41m 19s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
02:14:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
571.989 km
Perigee altitude
568.087 km
Semi-major axis
6,948.175 km
Eccentricity
0.00028
Inclination
69.9996°
RAAN
25.3296°
Arg. of periapsis
267.5608°
True anomaly
92.55505°
Mean anomaly
92.5229°
Eccentric anomaly
92.53897°
Mean motion
3.74746 °/min
Orbital period
96.07 mins
BSTAR
-0.00010937
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Other satellites on launch #37 in the year 2023 (2023-03-17 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.STARLINK-5918 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 | 2026-06-22 15:50:22.679Z | 225.407° WSW | 2026-06-22 15:54:22.679Z | 303.634° NW | 35.015° | 2026-06-22 15:57:22.679Z | 7.096° NNE |
| 5 mins | 2026-06-23 00:16:22.679Z | 11.847° NNE | 2026-06-23 00:18:22.679Z | 58.026° ENE | 27.7° | 2026-06-23 00:21:22.679Z | 117.033° SE |
| 4 mins | 2026-06-23 01:55:22.679Z | 277.499° WNW | 2026-06-23 01:56:22.679Z | 257.863° W | 19.539° | 2026-06-23 01:59:22.679Z | 208.887° SW |
| 4 mins | 2026-06-23 14:17:22.679Z | 129.756° SE | 2026-06-23 14:18:22.679Z | 109.868° ESE | 20.26° | 2026-06-23 14:21:22.679Z | 58.792° ENE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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