STARLINK-2123, 47401
Orbit data source: Space-Track
STARLINK-2123, 47401 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 20 Jan 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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47401 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: 3 days ago
TLE from 3 days ago
0 STARLINK-2123
1 47401U 21005BE 26170.56286172 -.00000115 00000-0 80476-5 0 9995
2 47401 53.1607 283.0294 0001321 69.6298 290.4845 15.31702646298999Epoch: 2026-06-19T13:30Z
TLE epoch observation values (Epoch: 2026-06-19T13:30:31.252Z)
Latitude
-0.00005°
Longitude
172.6091°
Altitude
471.316 km
Speed
7.632 km/s
True Right ascension
18h 52m 07s
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
23:07:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.893 km
Perigee altitude
470.084 km
Semi-major axis
6,849.126 km
Eccentricity
0.00013
Inclination
53.1607°
RAAN
283.0294°
Arg. of periapsis
69.6298°
True anomaly
290.47032°
Mean anomaly
290.4845°
Eccentric anomaly
290.47741°
Mean motion
3.82905 °/min
Orbital period
94.02 mins
BSTAR
0.0000080476
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Other satellites on launch #5 in the year 2021 (2021-01-20 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-2123 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 15:35:59.115Z | 331.607° NNW | 2026-06-22 15:37:59.115Z | 25.207° NE | 33.161° | 2026-06-22 15:40:59.115Z | 101.946° ESE |
| 4 mins | 2026-06-22 17:13:59.115Z | 270.118° WNW | 2026-06-22 17:15:59.115Z | 224.932° SW | 21.329° | 2026-06-22 17:17:59.115Z | 184.421° SSW |
| 5 mins | 2026-06-23 08:30:59.115Z | 186.197° SSW | 2026-06-23 08:32:59.115Z | 121.658° SE | 31.041° | 2026-06-23 08:35:59.115Z | 65.356° ENE |
| 4 mins | 2026-06-23 10:08:59.115Z | 288.161° WNW | 2026-06-23 10:10:59.115Z | 343.602° N | 25.113° | 2026-06-23 10:12:59.115Z | 24.741° 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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