STARLINK-2155, 48557
Orbit data source: Space-Track
STARLINK-2155, 48557 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 15 May 2021 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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48557 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
260 kg wet, ~248 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-2155
1 48557U 21041E 26170.96716835 .00001487 00000-0 59648-4 0 9994
2 48557 53.1608 11.0449 0000926 82.5376 277.5731 15.31710196280940Epoch: 2026-06-19T23:12Z
TLE epoch observation values (Epoch: 2026-06-19T23:12:43.345Z)
Latitude
0.00001°
Longitude
114.67575°
Altitude
471.526 km
Speed
7.632 km/s
True Right ascension
00h 44m 10s
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
21:39:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.6 km
Perigee altitude
470.332 km
Semi-major axis
6,849.103 km
Eccentricity
0.00009
Inclination
53.1608°
RAAN
11.0449°
Arg. of periapsis
82.5376°
True anomaly
277.56258°
Mean anomaly
277.5731°
Eccentric anomaly
277.56784°
Mean motion
3.82906 °/min
Orbital period
94.02 mins
BSTAR
0.000059648
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Other satellites on launch #41 in the year 2021 (2021-05-15 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-2155 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 | 2026-06-22 15:37:09.634Z | 241.786° WSW | 2026-06-22 15:39:09.634Z | 287.36° WNW | 41.972° | 2026-06-22 15:42:09.634Z | 43.376° NE |
| 4 mins | 2026-06-22 20:34:09.634Z | 348.014° N | 2026-06-22 20:36:09.634Z | 28.778° NE | 17.855° | 2026-06-22 20:38:09.634Z | 65.258° ENE |
| 5 mins | 2026-06-22 22:12:09.634Z | 307.196° NW | 2026-06-22 22:14:09.634Z | 196.518° SSW | 44.766° | 2026-06-22 22:17:09.634Z | 133.932° SE |
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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