STARLINK-5899, 55949
Orbit data source: Space-Track
STARLINK-5899, 55949 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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55949 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: 3 days ago
TLE from 3 days ago
0 STARLINK-5899
1 55949U 23037AM 26170.92939596 .00000069 00000-0 13566-4 0 9995
2 55949 70.0000 6.8388 0002711 262.7637 97.3214 14.98331002179787Epoch: 2026-06-19T22:18Z
TLE epoch observation values (Epoch: 2026-06-19T22:18:19.810Z)
Latitude
-0.00005°
Longitude
124.10492°
Altitude
574.717 km
Speed
7.574 km/s
True Right ascension
00h 27m 21s
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
23:19:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
571.885 km
Perigee altitude
568.117 km
Semi-major axis
6,948.138 km
Eccentricity
0.00027
Inclination
70°
RAAN
6.8388°
Arg. of periapsis
262.7637°
True anomaly
97.35221°
Mean anomaly
97.3214°
Eccentric anomaly
97.33681°
Mean motion
3.74749 °/min
Orbital period
96.06 mins
BSTAR
0.000013566
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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-5899 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 | 2026-06-22 14:33:12.375Z | 233.779° WSW | 2026-06-22 14:36:12.375Z | 316.727° NNW | 34.302° | 2026-06-22 14:39:12.375Z | 8.974° NNE |
| 6 mins | 2026-06-22 22:57:12.375Z | 3.44° NNE | 2026-06-22 23:00:12.375Z | 67.246° ENE | 27.48° | 2026-06-22 23:03:12.375Z | 119.65° SE |
| 4 mins | 2026-06-23 00:36:12.375Z | 288.701° WNW | 2026-06-23 00:38:12.375Z | 251.419° W | 19.511° | 2026-06-23 00:40:12.375Z | 216.734° SW |
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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