STARLINK-3125, 49451
Orbit data source: Space-Track
STARLINK-3125, 49451 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 13 Nov 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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49451 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
290 kg wet, ~270 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: 1 week ago
TLE from 1 week ago
0 STARLINK-3125
1 49451U 21104AV 26154.32811949 .00000259 00000-0 34368-4 0 9990
2 49451 53.1846 194.6630 0001279 108.4580 251.6551 15.08860137251705Epoch: 2026-06-03T07:52Z
TLE epoch observation values (Epoch: 2026-06-03T07:52:29.523Z)
Latitude
-0.00003°
Longitude
-175.24835°
Altitude
540.854 km
Speed
7.593 km/s
True Right ascension
12h 58m 39s
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
16:13:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.817 km
Perigee altitude
539.047 km
Semi-major axis
6,918.069 km
Eccentricity
0.00013
Inclination
53.1846°
RAAN
194.663°
Arg. of periapsis
108.458°
True anomaly
251.64119°
Mean anomaly
251.6551°
Eccentric anomaly
251.64814°
Mean motion
3.77195 °/min
Orbital period
95.44 mins
BSTAR
0.000034368
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Other satellites on launch #104 in the year 2021 (2021-11-13 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-3125 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 | 2026-06-11 07:02:50.968Z | 339.702° N | 2026-06-11 07:04:50.968Z | 10.113° NNE | 13.543° | 2026-06-11 07:06:50.968Z | 40.59° NE |
| 6 mins | 2026-06-11 08:42:50.968Z | 335.677° NNW | 2026-06-11 08:44:50.968Z | 19.619° NNE | 29.256° | 2026-06-11 08:48:50.968Z | 97.428° ESE |
| 6 mins | 2026-06-11 10:21:50.968Z | 286.792° WNW | 2026-06-11 10:24:50.968Z | 215.552° SW | 29.919° | 2026-06-11 10:27:50.968Z | 163.218° S |
| 5 mins | 2026-06-12 01:53:50.968Z | 187.807° SSW | 2026-06-12 01:55:50.968Z | 130.547° SE | 32.976° | 2026-06-12 01:58:50.968Z | 67.408° ENE |
| 5 mins | 2026-06-12 03:32:50.968Z | 277.632° WNW | 2026-06-12 03:34:50.968Z | 319.964° NNW | 27.603° | 2026-06-12 03:37:50.968Z | 26.925° 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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