STARLINK-3139, 49425
Orbit data source: Space-Track
STARLINK-3139, 49425 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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49425 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-3139
1 49425U 21104T 26154.45697491 .00000607 00000-0 56248-4 0 9997
2 49425 53.1918 204.0884 0001257 81.1694 278.9440 15.08839090251581Epoch: 2026-06-03T10:58Z
TLE epoch observation values (Epoch: 2026-06-03T10:58:02.632Z)
Latitude
-0.00002°
Longitude
147.6621°
Altitude
540.506 km
Speed
7.593 km/s
True Right ascension
13h 36m 21s
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
16:14:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.865 km
Perigee altitude
539.126 km
Semi-major axis
6,918.132 km
Eccentricity
0.00013
Inclination
53.1918°
RAAN
204.0884°
Arg. of periapsis
81.1694°
True anomaly
278.92977°
Mean anomaly
278.944°
Eccentric anomaly
278.93689°
Mean motion
3.7719 °/min
Orbital period
95.44 mins
BSTAR
0.000056248
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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-3139 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 08:36:16.520Z | 350.303° N | 2026-06-11 08:38:16.520Z | 29.408° NE | 18.902° | 2026-06-11 08:40:16.520Z | 63.265° ENE |
| 6 mins | 2026-06-11 10:15:16.520Z | 311.483° NW | 2026-06-11 10:17:16.520Z | 319.207° NNW | 43.176° | 2026-06-11 10:21:16.520Z | 129.688° SE |
| 6 mins | 2026-06-12 03:25:16.520Z | 240.819° WSW | 2026-06-12 03:28:16.520Z | 340.322° N | 42.78° | 2026-06-12 03:31:16.520Z | 43.985° NE |
| 4 mins | 2026-06-12 05:06:16.520Z | 309.375° NW | 2026-06-12 05:08:16.520Z | 345.24° N | 17.266° | 2026-06-12 05:10:16.520Z | 18.56° NNE |
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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