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: 8 hours ago
TLE from 8 hours ago
0 STARLINK-2555
1 48291U 21036R 25291.18856839 -.00001608 00000-0 -89093-4 0 9993
2 48291 53.0528 1.3373 0001730 94.3702 265.7484 15.06391059246830Epoch: 2025-10-18T04:31Z
TLE epoch observation values (Epoch: 2025-10-18T04:31:32.308Z)
Latitude
-0.00009°
Longitude
-93.47055°
Altitude
548.207 km
Speed
7.589 km/s
True Right ascension
00h 05m 20s
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
07:41:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.708 km
Perigee altitude
546.312 km
Semi-major axis
6,925.647 km
Eccentricity
0.00017
Inclination
53.0528°
RAAN
1.3373°
Arg. of periapsis
94.3702°
True anomaly
265.72863°
Mean anomaly
265.7484°
Eccentric anomaly
265.73852°
Mean motion
3.76576 °/min
Orbital period
95.6 mins
BSTAR
-0.000089093
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-10-18 12:56:07.749Z | 337.845° N | 2025-10-18 12:59:07.749Z | 33.808° NE | 20.272° | 2025-10-18 13:01:07.749Z | 67.621° E |
| 6 mins | 2025-10-18 14:36:07.749Z | 306.796° NW | 2025-10-18 14:38:07.749Z | 289.199° WNW | 43.145° | 2025-10-18 14:42:07.749Z | 134.499° SE |
| 5 mins | 2025-10-19 06:09:07.749Z | 167.466° S | 2025-10-19 06:11:07.749Z | 135.8° SSE | 17.49° | 2025-10-19 06:14:07.749Z | 85.773° E |
| 6 mins | 2025-10-19 07:48:07.749Z | 247.879° W | 2025-10-19 07:51:07.749Z | 353.728° N | 39.884° | 2025-10-19 07:54:07.749Z | 42.584° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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