STARLINK-5291, 55273
Orbit data source: Space-Track
STARLINK-5291, 55273 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 19 Jan 2023 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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55273 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: 2 days ago
TLE from 2 days ago
0 STARLINK-5291
1 55273U 23010E 26171.32739308 .00000599 00000-0 57965-4 0 9999
2 55273 69.9989 145.5288 0003864 257.0839 102.9888 14.98339701188167Epoch: 2026-06-20T07:51Z
TLE epoch observation values (Epoch: 2026-06-20T07:51:26.762Z)
Latitude
-0.00006°
Longitude
119.12366°
Altitude
575.054 km
Speed
7.573 km/s
True Right ascension
09h 42m 06s
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
21:30:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.659 km
Perigee altitude
567.289 km
Semi-major axis
6,948.111 km
Eccentricity
0.00039
Inclination
69.9989°
RAAN
145.5288°
Arg. of periapsis
257.0839°
True anomaly
103.03194°
Mean anomaly
102.9888°
Eccentric anomaly
103.01037°
Mean motion
3.74751 °/min
Orbital period
96.06 mins
BSTAR
0.000057965
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Other satellites on launch #10 in the year 2023 (2023-01-19 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-5291 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 | 2026-06-22 22:28:20.143Z | 155.346° SSE | 2026-06-22 22:31:20.143Z | 103.509° ESE | 22.045° | 2026-06-22 22:34:20.143Z | 54.241° ENE |
| 5 mins | 2026-06-23 00:07:20.143Z | 257.647° W | 2026-06-23 00:09:20.143Z | 299.894° NW | 25.131° | 2026-06-23 00:12:20.143Z | 356.204° N |
| 6 mins | 2026-06-23 08:31:20.143Z | 356.564° N | 2026-06-23 08:33:20.143Z | 51.092° ENE | 37.843° | 2026-06-23 08:37:20.143Z | 138.718° SSE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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