STARLINK-3305, 50166
Orbit data source: Space-Track
STARLINK-3305, 50166 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 18 Dec 2021 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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50166 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: 3 hours ago
TLE from 3 hours ago
0 STARLINK-3305
1 50166U 21125L 26170.18714769 .00000222 00000-0 32046-4 0 9993
2 50166 53.1602 153.3065 0001278 90.6469 269.4669 15.08829618251910Epoch: 2026-06-19T04:29Z
TLE epoch observation values (Epoch: 2026-06-19T04:29:29.560Z)
Latitude
-0.00001°
Longitude
178.5136°
Altitude
540.675 km
Speed
7.593 km/s
True Right ascension
10h 13m 13s
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
18:45:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.913 km
Perigee altitude
539.145 km
Semi-major axis
6,918.166 km
Eccentricity
0.00013
Inclination
53.1602°
RAAN
153.3065°
Arg. of periapsis
90.6469°
True anomaly
269.45226°
Mean anomaly
269.4669°
Eccentric anomaly
269.45958°
Mean motion
3.77187 °/min
Orbital period
95.44 mins
BSTAR
0.000032046
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Other satellites on launch #125 in the year 2021 (2021-12-18 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-3305 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 | 2026-06-19 08:09:00.232Z | 320.553° NNW | 2026-06-19 08:12:00.232Z | 10.186° NNE | 35.864° | 2026-06-19 08:16:00.232Z | 109.274° ESE |
| 4 mins | 2026-06-19 09:50:00.232Z | 263.867° W | 2026-06-19 09:52:00.232Z | 221.312° SW | 20.968° | 2026-06-19 09:54:00.232Z | 186.347° SSW |
| 6 mins | 2026-06-20 01:20:00.232Z | 215.429° SW | 2026-06-20 01:23:00.232Z | 131.405° SE | 42.144° | 2026-06-20 01:26:00.232Z | 57.637° ENE |
| 4 mins | 2026-06-20 03:01:00.232Z | 300.334° NW | 2026-06-20 03:03:00.232Z | 345.092° N | 22.205° | 2026-06-20 03:05:00.232Z | 21.458° 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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