STARLINK-5735, 55603
Orbit data source: Space-Track
STARLINK-5735, 55603 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 12 Feb 2023 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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55603 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
305 kg wet, ~290 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 4.4 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-5735
1 55603U 23020AL 25260.23644948 -.00001362 00000-0 -85775-4 0 9991
2 55603 43.0055 214.4884 0001351 275.0967 84.9721 15.02528022142976Epoch: 2025-09-17T05:40Z
TLE epoch observation values (Epoch: 2025-09-17T05:40:29.235Z)
Latitude
-0.00001°
Longitude
132.95128°
Altitude
558.801 km
Speed
7.584 km/s
True Right ascension
14h 17m 57s
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
14:10:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.965 km
Perigee altitude
560.09 km
Semi-major axis
6,939.164 km
Eccentricity
0.00014
Inclination
43.0055°
RAAN
214.4884°
Arg. of periapsis
275.0967°
True anomaly
84.98752°
Mean anomaly
84.9721°
Eccentric anomaly
84.97981°
Mean motion
3.75476 °/min
Orbital period
95.88 mins
BSTAR
-0.000085775
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Other satellites on launch #20 in the year 2023 (2023-02-12 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-5735 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 | 2025-09-17 23:23:48.593Z | 187.36° SSW | 2025-09-17 23:26:48.593Z | 139.933° SSE | 18.304° | 2025-09-17 23:28:48.593Z | 106.287° ESE |
| 7 mins | 2025-09-18 01:03:48.593Z | 241.586° WSW | 2025-09-18 01:06:48.593Z | 174.617° S | 43.975° | 2025-09-18 01:10:48.593Z | 73.632° E |
| 7 mins | 2025-09-18 02:44:48.593Z | 281.437° WNW | 2025-09-18 02:47:48.593Z | 1.819° NNE | 39.749° | 2025-09-18 02:51:48.593Z | 75.264° E |
| 7 mins | 2025-09-18 04:25:48.593Z | 291.139° WNW | 2025-09-18 04:28:48.593Z | 35.422° NE | 43.68° | 2025-09-18 04:32:48.593Z | 99.93° ESE |
| 6 mins | 2025-09-18 06:06:48.593Z | 266.23° W | 2025-09-18 06:08:48.593Z | 223.891° SW | 30.108° | 2025-09-18 06:12:48.593Z | 145.329° SSE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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