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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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: 15 hours ago
TLE from 15 hours ago
0 STARLINK-2557
1 48299U 21036Z 25291.22541872 -.00009048 00000-0 -58890-3 0 9990
2 48299 53.0585 1.1622 0002730 109.5856 250.5428 15.06418338246847Epoch: 2025-10-18T05:24Z
TLE epoch observation values (Epoch: 2025-10-18T05:24:36.177Z)
Latitude
-0.00001°
Longitude
-106.94804°
Altitude
548.665 km
Speed
7.588 km/s
True Right ascension
00h 04m 38s
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
15:38:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
549.316 km
Perigee altitude
545.535 km
Semi-major axis
6,925.562 km
Eccentricity
0.00027
Inclination
53.0585°
RAAN
1.1622°
Arg. of periapsis
109.5856°
True anomaly
250.51331°
Mean anomaly
250.5428°
Eccentric anomaly
250.52805°
Mean motion
3.76583 °/min
Orbital period
95.6 mins
BSTAR
-0.0005889
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-19 07:02:35.994Z | 214.209° SW | 2025-10-19 07:06:35.994Z | 127.882° SE | 40.06° | 2025-10-19 07:09:35.994Z | 60.313° ENE |
| 5 mins | 2025-10-19 08:44:35.994Z | 296.734° NW | 2025-10-19 08:46:35.994Z | 343.29° N | 23.859° | 2025-10-19 08:49:35.994Z | 31.636° NE |
| 6 mins | 2025-10-19 13:45:35.994Z | 323.464° NNW | 2025-10-19 13:47:35.994Z | 9.22° NNE | 39.306° | 2025-10-19 13:51:35.994Z | 115.064° SE |
| 4 mins | 2025-10-19 15:25:35.994Z | 261.559° W | 2025-10-19 15:27:35.994Z | 223.676° SW | 18.16° | 2025-10-19 15:29:35.994Z | 191.371° SSW |
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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