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: 4 hours ago
TLE from 4 hours ago
0 STARLINK-5366
1 55499U 23015BC 26132.86383498 .00000092 00000-0 12854-4 0 9991
2 55499 43.0046 336.9773 0000994 263.4120 96.6618 15.27577408181168Epoch: 2026-05-12T20:43Z
TLE epoch observation values (Epoch: 2026-05-12T20:43:55.342Z)
Latitude
-0.00005°
Longitude
155.36456°
Altitude
482.912 km
Speed
7.626 km/s
True Right ascension
22h 27m 54s
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
09:31:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.683 km
Perigee altitude
484.319 km
Semi-major axis
6,863.138 km
Eccentricity
0.0001
Inclination
43.0046°
RAAN
336.9773°
Arg. of periapsis
263.412°
True anomaly
96.67311°
Mean anomaly
96.6618°
Eccentric anomaly
96.66746°
Mean motion
3.81732 °/min
Orbital period
94.31 mins
BSTAR
0.000012854
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-05-13 17:22:36.845Z | 230.324° WSW | 2026-05-13 17:24:36.845Z | 167.484° S | 41.247° | 2026-05-13 17:27:36.845Z | 77.891° E |
| 5 mins | 2026-05-13 19:01:36.845Z | 282.353° WNW | 2026-05-13 19:03:36.845Z | 343.033° N | 39.227° | 2026-05-13 19:06:36.845Z | 69.108° E |
| 6 mins | 2026-05-13 20:40:36.845Z | 294.04° NW | 2026-05-13 20:42:36.845Z | 338.572° N | 40.622° | 2026-05-13 20:46:36.845Z | 93.515° ESE |
| 5 mins | 2026-05-13 22:19:36.845Z | 270.587° WNW | 2026-05-13 22:21:36.845Z | 219.99° SW | 33.652° | 2026-05-13 22:24:36.845Z | 141.096° 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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