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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Edit Public Description
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, 4.4 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 STARLINK-5761
1 55599U 23020AG 25260.24532378 -.00000430 00000-0 -16771-4 0 9994
2 55599 43.0025 214.5363 0001079 266.8942 93.1777 15.02531333142970Epoch: 2025-09-17T05:53Z
TLE epoch observation values (Epoch: 2025-09-17T05:53:15.974Z)
Latitude
-0.00002°
Longitude
129.79569°
Altitude
558.914 km
Speed
7.584 km/s
True Right ascension
14h 18m 08s
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
12:32:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.766 km
Perigee altitude
560.269 km
Semi-major axis
6,939.154 km
Eccentricity
0.00011
Inclination
43.0025°
RAAN
214.5363°
Arg. of periapsis
266.8942°
True anomaly
93.19005°
Mean anomaly
93.1777°
Eccentric anomaly
93.18387°
Mean motion
3.75477 °/min
Orbital period
95.88 mins
BSTAR
-0.000016771
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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 | 2025-09-17 23:37:35.979Z | 188.195° SSW | 2025-09-17 23:39:35.979Z | 153.395° SSE | 21.412° | 2025-09-17 23:42:35.979Z | 98.418° ESE |
| 6 mins | 2025-09-18 01:17:35.979Z | 247.914° W | 2025-09-18 01:20:35.979Z | 89.296° E | 44.246° | 2025-09-18 01:23:35.979Z | 72.582° E |
| 6 mins | 2025-09-18 02:58:35.979Z | 286.521° WNW | 2025-09-18 03:01:35.979Z | 24.049° NE | 38.398° | 2025-09-18 03:04:35.979Z | 74.794° E |
| 6 mins | 2025-09-18 04:39:35.979Z | 290.492° WNW | 2025-09-18 04:41:35.979Z | 307.658° NW | 42.736° | 2025-09-18 04:45:35.979Z | 104.048° ESE |
| 5 mins | 2025-09-18 06:20:35.979Z | 256.955° W | 2025-09-18 06:22:35.979Z | 211.02° SW | 26.69° | 2025-09-18 06:25:35.979Z | 155.916° SSE |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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