STARLINK-5366, 55499
Orbit data source: Space-Track
STARLINK-5366, 55499 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 02 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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55499 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, 10.1 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 STARLINK-5366
1 55499U 23015BC 26035.60793759 -.00000366 00000-0 -11978-4 0 9992
2 55499 43.0058 158.2147 0001463 276.1366 83.9310 15.02542456166389Epoch: 2026-02-04T14:35Z
TLE epoch observation values (Epoch: 2026-02-04T14:35:25.807Z)
Latitude
-0.00001°
Longitude
164.58508°
Altitude
558.731 km
Speed
7.584 km/s
True Right ascension
10h 32m 51s
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
03:18:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.998 km
Perigee altitude
559.967 km
Semi-major axis
6,939.12 km
Eccentricity
0.00015
Inclination
43.0058°
RAAN
158.2147°
Arg. of periapsis
276.1366°
True anomaly
83.94767°
Mean anomaly
83.931°
Eccentric anomaly
83.93934°
Mean motion
3.7548 °/min
Orbital period
95.88 mins
BSTAR
-0.000011978
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Other satellites on launch #15 in the year 2023 (2023-02-02 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-5366 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-02-05 11:33:24.194Z | 223.476° SW | 2026-02-05 11:36:24.194Z | 138.667° SSE | 37.931° | 2026-02-05 11:39:24.194Z | 80.232° E |
| 6 mins | 2026-02-05 13:14:24.194Z | 275.199° WNW | 2026-02-05 13:16:24.194Z | 317.976° NNW | 40.449° | 2026-02-05 13:20:24.194Z | 70.861° E |
| 6 mins | 2026-02-05 14:55:24.194Z | 294.449° NW | 2026-02-05 14:57:24.194Z | 339.639° N | 40.38° | 2026-02-05 15:01:24.194Z | 88.924° E |
| 7 mins | 2026-02-05 16:35:24.194Z | 279.651° WNW | 2026-02-05 16:38:24.194Z | 210.97° SW | 39.148° | 2026-02-05 16:42:24.194Z | 129.38° 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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