STARLINK-4377, 53221
Orbit data source: Space-Track
STARLINK-4377, 53221 is a payload satellite owned by SpaceX/Seattle (US) in SSO that was launched on Fri, 22 Jul 2022 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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53221 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
297 kg wet, ~275 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: 2 days ago
TLE from 2 days ago
0 STARLINK-4377
1 53221U 22084AJ 26171.43622470 .00003100 00000-0 21854-3 0 9991
2 53221 97.3413 230.3267 0001775 96.6053 263.5376 15.05674563214779Epoch: 2026-06-20T10:28Z
TLE epoch observation values (Epoch: 2026-06-20T10:28:09.814Z)
Latitude
-0.00006°
Longitude
164.63494°
Altitude
552.647 km
Speed
7.585 km/s
True Right ascension
15h 21m 18s
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
21:26:36
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
547.647 km
Perigee altitude
545.189 km
Semi-major axis
6,924.555 km
Eccentricity
0.00018
Inclination
97.3413°
RAAN
230.3267°
Arg. of periapsis
96.6053°
True anomaly
263.51739°
Mean anomaly
263.5376°
Eccentric anomaly
263.52749°
Mean motion
3.76665 °/min
Orbital period
95.58 mins
BSTAR
0.00021854
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Other satellites on launch #84 in the year 2022 (2022-07-22 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-4377 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 17:16:36.448Z | 343.414° N | 2026-06-22 17:18:36.448Z | 288.401° WNW | 32.92° | 2026-06-22 17:21:36.448Z | 221.182° SW |
| 6 mins | 2026-06-23 03:59:36.448Z | 167.54° S | 2026-06-23 04:02:36.448Z | 340.684° N | 44.795° | 2026-06-23 04:05:36.448Z | 347.85° N |
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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