STARLINK-2431, 47839
Orbit data source: Space-Track
STARLINK-2431, 47839 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 11 Mar 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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47839 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
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: 16 hours ago
TLE from 16 hours ago
0 STARLINK-2431
1 47839U 21018BE 26119.84699454 .00003185 00000-0 11438-3 0 9998
2 47839 53.1599 339.1484 0001217 96.2821 263.8319 15.31697253284936Epoch: 2026-04-29T20:19Z
TLE epoch observation values (Epoch: 2026-04-29T20:19:40.328Z)
Latitude
-0.00002°
Longitude
176.42827°
Altitude
471.738 km
Speed
7.631 km/s
True Right ascension
22h 36m 35s
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
20:14:03
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.838 km
Perigee altitude
470.171 km
Semi-major axis
6,849.142 km
Eccentricity
0.00012
Inclination
53.1599°
RAAN
339.1484°
Arg. of periapsis
96.2821°
True anomaly
263.81804°
Mean anomaly
263.8319°
Eccentric anomaly
263.82497°
Mean motion
3.82903 °/min
Orbital period
94.02 mins
BSTAR
0.00011438
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Other satellites on launch #18 in the year 2021 (2021-03-11 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-2431 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 | 2026-04-30 16:50:37.991Z | 209.509° SW | 2026-04-30 16:53:37.991Z | 157.855° S | 35.604° | 2026-04-30 16:56:37.991Z | 64.83° ENE |
| 4 mins | 2026-04-30 18:30:37.991Z | 298.345° NW | 2026-04-30 18:31:37.991Z | 322.405° NNW | 22.497° | 2026-04-30 18:34:37.991Z | 25.654° NE |
| 5 mins | 2026-04-30 23:26:37.991Z | 333.61° NNW | 2026-04-30 23:28:37.991Z | 36.732° NE | 34.027° | 2026-04-30 23:31:37.991Z | 104.693° ESE |
| 4 mins | 2026-05-01 01:04:37.991Z | 265.47° W | 2026-05-01 01:06:37.991Z | 219.133° SW | 20.3° | 2026-05-01 01:08:37.991Z | 182.529° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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