STARLINK-5761, 55599
Orbit data source: Space-Track
STARLINK-5761, 55599 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 12 Feb 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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55599 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
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 STARLINK-5761
1 55599U 23020AG 26171.32470029 .00000848 00000-0 40353-4 0 9993
2 55599 43.0023 134.7880 0001641 272.2765 87.7899 15.27577631184736Epoch: 2026-06-20T07:47Z
TLE epoch observation values (Epoch: 2026-06-20T07:47:34.105Z)
Latitude
0.00002°
Longitude
109.35496°
Altitude
482.789 km
Speed
7.626 km/s
True Right ascension
08h 59m 09s
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
21:39:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
486.127 km
Perigee altitude
483.875 km
Semi-major axis
6,863.138 km
Eccentricity
0.00016
Inclination
43.0023°
RAAN
134.788°
Arg. of periapsis
272.2765°
True anomaly
87.80869°
Mean anomaly
87.7899°
Eccentric anomaly
87.7993°
Mean motion
3.81732 °/min
Orbital period
94.31 mins
BSTAR
0.000040353
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Other satellites on launch #20 in the year 2023 (2023-02-12 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-5761 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-23 00:22:32.308Z | 217.79° SW | 2026-06-23 00:24:32.308Z | 133.413° SE | 37.663° | 2026-06-23 00:27:32.308Z | 78.584° E |
| 6 mins | 2026-06-23 02:00:32.308Z | 275.035° WNW | 2026-06-23 02:03:32.308Z | 18.622° NNE | 39.306° | 2026-06-23 02:06:32.308Z | 70.52° E |
| 5 mins | 2026-06-23 03:40:32.308Z | 298.21° NW | 2026-06-23 03:42:32.308Z | 20.455° NNE | 40.486° | 2026-06-23 03:45:32.308Z | 88.166° E |
| 5 mins | 2026-06-23 05:19:32.308Z | 269.877° W | 2026-06-23 05:21:32.308Z | 195.04° SSW | 37.316° | 2026-06-23 05:24:32.308Z | 132.309° 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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