STARLINK-2557, 48299
Orbit data source: Space-Track
STARLINK-2557, 48299 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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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-2557
1 48299U 21036Z 26138.15724103 -.00000510 00000-0 -46684-5 0 9998
2 48299 53.1580 112.2804 0001297 94.8769 265.2380 15.31697852279052Epoch: 2026-05-18T03:46Z
TLE epoch observation values (Epoch: 2026-05-18T03:46:25.624Z)
Latitude
-0.00004°
Longitude
179.82407°
Altitude
471.72 km
Speed
7.631 km/s
True Right ascension
07h 29m 07s
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
20:48:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.892 km
Perigee altitude
470.115 km
Semi-major axis
6,849.14 km
Eccentricity
0.00013
Inclination
53.158°
RAAN
112.2804°
Arg. of periapsis
94.8769°
True anomaly
265.22319°
Mean anomaly
265.238°
Eccentric anomaly
265.23059°
Mean motion
3.82903 °/min
Orbital period
94.02 mins
BSTAR
-0.0000046684
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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-2557 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 | 2026-05-19 00:17:15.313Z | 197.473° SSW | 2026-05-19 00:20:15.313Z | 134.296° SE | 29.724° | 2026-05-19 00:23:15.313Z | 68.817° E |
| 5 mins | 2026-05-19 01:56:15.313Z | 281.415° WNW | 2026-05-19 01:58:15.313Z | 334.512° NNW | 26.639° | 2026-05-19 02:01:15.313Z | 32.407° NE |
| 4 mins | 2026-05-19 06:53:15.313Z | 346.664° N | 2026-05-19 06:54:15.313Z | 13.664° NNE | 27.939° | 2026-05-19 06:57:15.313Z | 91.287° ESE |
| 4 mins | 2026-05-19 08:31:15.313Z | 264.467° W | 2026-05-19 08:32:15.313Z | 236.244° WSW | 26.35° | 2026-05-19 08:35:15.313Z | 169.617° S |
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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