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: 18 hours ago
TLE from 18 hours ago
0 STARLINK-5761
1 55599U 23020AG 26198.39469851 -.00000077 00000-0 67336-5 0 9996
2 55599 43.0046 341.9124 0001540 269.5552 90.5123 15.27575936188872Epoch: 2026-07-17T09:28Z
TLE epoch observation values (Epoch: 2026-07-17T09:28:21.951Z)
Latitude
-0.00002°
Longitude
-95.40151°
Altitude
482.847 km
Speed
7.626 km/s
True Right ascension
22h 47m 38s
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
15:44:16
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
486.063 km
Perigee altitude
483.949 km
Semi-major axis
6,863.143 km
Eccentricity
0.00015
Inclination
43.0046°
RAAN
341.9124°
Arg. of periapsis
269.5552°
True anomaly
90.52995°
Mean anomaly
90.5123°
Eccentric anomaly
90.52112°
Mean motion
3.81732 °/min
Orbital period
94.31 mins
BSTAR
0.0000067336
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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 | 2026-07-18 12:20:58.766Z | 198.343° SSW | 2026-07-18 12:22:58.766Z | 158.016° S | 24.252° | 2026-07-18 12:25:58.766Z | 93.396° ESE |
| 5 mins | 2026-07-18 13:59:58.766Z | 258.279° W | 2026-07-18 14:01:58.766Z | 320.414° NNW | 44.514° | 2026-07-18 14:04:58.766Z | 70.291° E |
| 5 mins | 2026-07-18 15:38:58.766Z | 291.807° WNW | 2026-07-18 15:40:58.766Z | 345.038° N | 37.572° | 2026-07-18 15:43:58.766Z | 74.52° E |
| 6 mins | 2026-07-18 17:17:58.766Z | 287.749° WNW | 2026-07-18 17:19:58.766Z | 283.377° WNW | 43.35° | 2026-07-18 17:23:58.766Z | 110.206° ESE |
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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