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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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: 14 hours ago
TLE from 14 hours ago
0 STARLINK-5366
1 55499U 23015BC 26083.50002314 .00021496 00000-0 80887-3 0 9993
2 55499 42.9997 255.7252 0001676 264.4443 124.5841 15.26733540 5814Epoch: 2026-03-24T12:00Z
TLE epoch observation values (Epoch: 2026-03-24T12:00:01.999Z)
Latitude
19.39421°
Longitude
-84.20857°
Altitude
485.536 km
Speed
7.626 km/s
True Right ascension
18h 31m 06s
True Declination
19° 16' 57"
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
07:31:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
488.68 km
Perigee altitude
486.379 km
Semi-major axis
6,865.666 km
Eccentricity
0.00017
Inclination
42.9997°
RAAN
255.7252°
Arg. of periapsis
264.4443°
True anomaly
124.59991°
Mean anomaly
124.5841°
Eccentric anomaly
124.59201°
Mean motion
3.81522 °/min
Orbital period
94.36 mins
BSTAR
0.00080887
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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 | 2026-03-25 14:46:41.865Z | 226.505° WSW | 2026-03-25 14:49:41.865Z | 168.532° S | 36.217° | 2026-03-25 14:52:41.865Z | 82.939° E |
| 5 mins | 2026-03-25 16:26:41.865Z | 275.289° WNW | 2026-03-25 16:28:41.865Z | 328.14° NNW | 40.392° | 2026-03-25 16:31:41.865Z | 67.838° E |
| 6 mins | 2026-03-25 18:05:41.865Z | 293.167° NW | 2026-03-25 18:08:41.865Z | 42.126° NE | 38.364° | 2026-03-25 18:11:41.865Z | 87.597° E |
| 6 mins | 2026-03-25 19:44:41.865Z | 278.375° WNW | 2026-03-25 19:47:41.865Z | 175.844° S | 37.78° | 2026-03-25 19:50:41.865Z | 128.283° 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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