STARLINK-5946, 55990
Orbit data source: Space-Track
STARLINK-5946, 55990 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 24 Mar 2023 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). 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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55990 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-5946
1 55990U 23042E 26171.36007068 .00000973 00000-0 44868-4 0 9999
2 55990 43.0011 199.6044 0001341 269.5644 90.5054 15.27574635178573Epoch: 2026-06-20T08:38Z
TLE epoch observation values (Epoch: 2026-06-20T08:38:30.106Z)
Latitude
-0.00003°
Longitude
161.40311°
Altitude
482.849 km
Speed
7.626 km/s
True Right ascension
13h 18m 25s
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
00:31:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.93 km
Perigee altitude
484.09 km
Semi-major axis
6,863.147 km
Eccentricity
0.00013
Inclination
43.0011°
RAAN
199.6044°
Arg. of periapsis
269.5644°
True anomaly
90.52077°
Mean anomaly
90.5054°
Eccentric anomaly
90.51308°
Mean motion
3.81732 °/min
Orbital period
94.31 mins
BSTAR
0.000044868
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Other satellites on launch #42 in the year 2023 (2023-03-24 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-5946 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 | 2026-06-23 04:19:12.963Z | 222.022° SW | 2026-06-23 04:22:12.963Z | 173.369° S | 31.885° | 2026-06-23 04:26:12.963Z | 80.971° E |
| 6 mins | 2026-06-23 05:59:12.963Z | 270.175° WNW | 2026-06-23 06:01:12.963Z | 313.021° NW | 40.797° | 2026-06-23 06:05:12.963Z | 70.747° E |
| 6 mins | 2026-06-23 07:38:12.963Z | 292.294° WNW | 2026-06-23 07:41:12.963Z | 34.634° NE | 37.865° | 2026-06-23 07:44:12.963Z | 84.281° E |
| 6 mins | 2026-06-23 09:17:12.963Z | 281.65° WNW | 2026-06-23 09:20:12.963Z | 167.714° S | 40.548° | 2026-06-23 09:23:12.963Z | 122.89° SE |
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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