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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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, 10.1 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 STARLINK-5735
1 55603U 23020AL 26264.47212535 -.00000111 00000-0 55026-5 0 9992
2 55603 43.0025 328.3921 0001083 271.3045 88.7682 15.27575655198989Epoch: 2026-09-21T11:19Z
TLE epoch observation values (Epoch: 2026-09-21T11:19:51.630Z)
Latitude
-0.00005°
Longitude
158.07546°
Altitude
482.822 km
Speed
7.626 km/s
True Right ascension
21h 53m 34s
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
15:13:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.75 km
Perigee altitude
484.264 km
Semi-major axis
6,863.144 km
Eccentricity
0.00011
Inclination
43.0025°
RAAN
328.3921°
Arg. of periapsis
271.3045°
True anomaly
88.78061°
Mean anomaly
88.7682°
Eccentric anomaly
88.7744°
Mean motion
3.81732 °/min
Orbital period
94.31 mins
BSTAR
0.0000055026
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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 | 2026-09-22 07:58:24.949Z | 219.092° SW | 2026-09-22 08:00:24.949Z | 135.66° SSE | 52.058° | 2026-09-22 08:03:24.949Z | 78.369° E |
| 6 mins | 2026-09-22 09:36:24.949Z | 275.286° WNW | 2026-09-22 09:39:24.949Z | 14.261° NNE | 55.197° | 2026-09-22 09:42:24.949Z | 69.935° E |
| 5 mins | 2026-09-22 11:16:24.949Z | 298.266° NW | 2026-09-22 11:18:24.949Z | 15.118° NNE | 58.33° | 2026-09-22 11:21:24.949Z | 87.552° E |
| 5 mins | 2026-09-22 12:55:24.949Z | 271.154° WNW | 2026-09-22 12:57:24.949Z | 199.038° SSW | 50.798° | 2026-09-22 13:00:24.949Z | 132.341° SE |
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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