STARLINK-5221, 54091
Orbit data source: Space-Track
STARLINK-5221, 54091 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 20 Oct 2022 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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54091 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: 10 hours ago
TLE from 10 hours ago
0 STARLINK-5221
1 54091U 22136AS 25365.15662571 .00001957 00000-0 14102-3 0 9990
2 54091 53.2179 281.3771 0001277 88.6506 271.4632 15.08835256176649Epoch: 2025-12-31T03:45Z
TLE epoch observation values (Epoch: 2025-12-31T03:45:32.461Z)
Latitude
-0.00005°
Longitude
125.16222°
Altitude
540.633 km
Speed
7.593 km/s
True Right ascension
18h 45m 30s
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
13:19:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.886 km
Perigee altitude
539.119 km
Semi-major axis
6,918.14 km
Eccentricity
0.00013
Inclination
53.2179°
RAAN
281.3771°
Arg. of periapsis
88.6506°
True anomaly
271.44857°
Mean anomaly
271.4632°
Eccentric anomaly
271.45589°
Mean motion
3.77189 °/min
Orbital period
95.44 mins
BSTAR
0.00014102
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Other satellites on launch #136 in the year 2022 (2022-10-20 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-5221 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 | 2025-12-31 21:26:53.757Z | 233.323° WSW | 2025-12-31 21:28:53.757Z | 281.244° WNW | 44.72° | 2025-12-31 21:32:53.757Z | 48.765° ENE |
| 4 mins | 2025-12-31 23:06:53.757Z | 303.169° NW | 2025-12-31 23:08:53.757Z | 339.957° N | 18.776° | 2025-12-31 23:10:53.757Z | 15.977° NNE |
| 4 mins | 2026-01-01 02:28:53.757Z | 357.659° N | 2026-01-01 02:29:53.757Z | 17.678° NNE | 19.347° | 2026-01-01 02:32:53.757Z | 68.985° E |
| 7 mins | 2026-01-01 04:06:53.757Z | 310.18° NW | 2026-01-01 04:09:53.757Z | 80.83° E | 45° | 2026-01-01 04:13:53.757Z | 131.226° 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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