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: 16 hours ago
TLE from 16 hours ago
0 STARLINK-5761
1 55599U 23020AG 26264.23884464 -.00000113 00000-0 54139-5 0 9992
2 55599 43.0045 330.0587 0001366 294.0407 66.0302 15.27578626198946Epoch: 2026-09-21T05:43Z
TLE epoch observation values (Epoch: 2026-09-21T05:43:56.176Z)
Latitude
-0.00001°
Longitude
-116.04692°
Altitude
482.449 km
Speed
7.626 km/s
True Right ascension
22h 00m 14s
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
15:11:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.935 km
Perigee altitude
484.06 km
Semi-major axis
6,863.135 km
Eccentricity
0.00014
Inclination
43.0045°
RAAN
330.0587°
Arg. of periapsis
294.0407°
True anomaly
66.0445°
Mean anomaly
66.0302°
Eccentric anomaly
66.03735°
Mean motion
3.81733 °/min
Orbital period
94.31 mins
BSTAR
0.0000054139
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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 | 2026-09-22 07:01:46.718Z | 191.587° SSW | 2026-09-22 07:03:46.718Z | 154.666° SSE | 22.138° | 2026-09-22 07:06:46.718Z | 96.32° ESE |
| 5 mins | 2026-09-22 08:40:46.718Z | 250.708° W | 2026-09-22 08:42:46.718Z | 242.826° WSW | 89.289° | 2026-09-22 08:45:46.718Z | 71.617° E |
| 5 mins | 2026-09-22 10:19:46.718Z | 290.747° WNW | 2026-09-22 10:21:46.718Z | 348.957° N | 50.497° | 2026-09-22 10:24:46.718Z | 72.123° E |
| 6 mins | 2026-09-22 11:58:46.718Z | 291.182° WNW | 2026-09-22 12:00:46.718Z | 317.899° NNW | 70.824° | 2026-09-22 12:04:46.718Z | 104.188° ESE |
| 5 mins | 2026-09-22 13:37:46.718Z | 259.656° W | 2026-09-22 13:39:46.718Z | 214.303° SW | 27.434° | 2026-09-22 13:42:46.718Z | 155.716° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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