STARLINK-2555, 48291
Orbit data source: Space-Track
STARLINK-2555, 48291 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 29 Apr 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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48291 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
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: 10 hours ago
TLE from 10 hours ago
0 STARLINK-2555
1 48291U 21036R 26036.25809026 .00000547 00000-0 55605-4 0 9996
2 48291 53.0547 227.2087 0001801 95.2876 264.8318 15.06398117263425Epoch: 2026-02-05T06:11Z
TLE epoch observation values (Epoch: 2026-02-05T06:11:38.998Z)
Latitude
-0.00006°
Longitude
-1.11674°
Altitude
548.209 km
Speed
7.589 km/s
True Right ascension
15h 08m 50s
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
18:28:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.735 km
Perigee altitude
546.241 km
Semi-major axis
6,925.625 km
Eccentricity
0.00018
Inclination
53.0547°
RAAN
227.2087°
Arg. of periapsis
95.2876°
True anomaly
264.81125°
Mean anomaly
264.8318°
Eccentric anomaly
264.82152°
Mean motion
3.76578 °/min
Orbital period
95.6 mins
BSTAR
0.000055605
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Other satellites on launch #36 in the year 2021 (2021-04-29 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-2555 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-02-05 17:38:10.325Z | 308.879° NW | 2026-02-05 17:40:10.325Z | 341.618° N | 16.385° | 2026-02-05 17:42:10.325Z | 15.468° NNE |
| 5 mins | 2026-02-05 21:00:10.325Z | 348.923° N | 2026-02-05 21:02:10.325Z | 36.024° NE | 24.242° | 2026-02-05 21:05:10.325Z | 84.812° E |
| 6 mins | 2026-02-05 22:39:10.325Z | 294.639° NW | 2026-02-05 22:41:10.325Z | 248.089° W | 38.63° | 2026-02-05 22:45:10.325Z | 147.658° SSE |
| 5 mins | 2026-02-06 14:12:10.325Z | 176.764° S | 2026-02-06 14:14:10.325Z | 137.097° SSE | 24.387° | 2026-02-06 14:17:10.325Z | 78.26° E |
| 6 mins | 2026-02-06 15:51:10.325Z | 261.892° W | 2026-02-06 15:54:10.325Z | 343.632° N | 33.906° | 2026-02-06 15:57:10.325Z | 37.227° NE |
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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