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 26092.93299824 .00006531 00000-0 23240-3 0 9998
2 48299 53.1574 322.7662 0000965 79.0630 281.0479 15.30206326272125Epoch: 2026-04-02T22:23Z
TLE epoch observation values (Epoch: 2026-04-02T22:23:31.047Z)
Latitude
-0.00007°
Longitude
155.61241°
Altitude
475.969 km
Speed
7.629 km/s
True Right ascension
21h 31m 03s
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
12:35:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
476.114 km
Perigee altitude
474.792 km
Semi-major axis
6,853.59 km
Eccentricity
0.0001
Inclination
53.1574°
RAAN
322.7662°
Arg. of periapsis
79.063°
True anomaly
281.03705°
Mean anomaly
281.0479°
Eccentric anomaly
281.04247°
Mean motion
3.8253 °/min
Orbital period
94.11 mins
BSTAR
0.0002324
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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 | 2026-04-03 17:21:33.251Z | 199.492° SSW | 2026-04-03 17:24:33.251Z | 135.944° SSE | 31.119° | 2026-04-03 17:27:33.251Z | 67.953° E |
| 5 mins | 2026-04-03 19:00:33.251Z | 280.788° WNW | 2026-04-03 19:02:33.251Z | 329.844° NNW | 26.07° | 2026-04-03 19:05:33.251Z | 30.662° NE |
| 5 mins | 2026-04-03 23:57:33.251Z | 338.102° N | 2026-04-03 23:59:33.251Z | 34.759° NE | 30.064° | 2026-04-04 00:02:33.251Z | 97.932° ESE |
| 4 mins | 2026-04-04 01:35:33.251Z | 272.875° WNW | 2026-04-04 01:37:33.251Z | 220.97° SW | 25.173° | 2026-04-04 01:39:33.251Z | 177.453° 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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