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: 10 hours ago
TLE from 10 hours ago
0 STARLINK-5735
1 55603U 23020AL 26062.29529080 .00000160 00000-0 26889-4 0 9991
2 55603 43.0042 26.7369 0000937 273.1397 86.9338 15.02535755168109Epoch: 2026-03-03T07:05Z
TLE epoch observation values (Epoch: 2026-03-03T07:05:13.125Z)
Latitude
-0.00001°
Longitude
119.3558°
Altitude
558.824 km
Speed
7.584 km/s
True Right ascension
01h 46m 56s
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
20:54:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.654 km
Perigee altitude
560.353 km
Semi-major axis
6,939.141 km
Eccentricity
0.00009
Inclination
43.0042°
RAAN
26.7369°
Arg. of periapsis
273.1397°
True anomaly
86.94452°
Mean anomaly
86.9338°
Eccentric anomaly
86.93916°
Mean motion
3.75478 °/min
Orbital period
95.88 mins
BSTAR
0.000026889
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-03-04 00:49:52.389Z | 222.294° SW | 2026-03-04 00:53:52.389Z | 149.012° SSE | 34.229° | 2026-03-04 00:56:52.389Z | 84.671° E |
| 6 mins | 2026-03-04 02:31:52.389Z | 268.855° W | 2026-03-04 02:34:52.389Z | 29.113° NE | 41.363° | 2026-03-04 02:37:52.389Z | 70.103° E |
| 6 mins | 2026-03-04 04:12:52.389Z | 293.118° NW | 2026-03-04 04:15:52.389Z | 38.542° NE | 38.874° | 2026-03-04 04:18:52.389Z | 84.394° E |
| 6 mins | 2026-03-04 05:53:52.389Z | 279.198° WNW | 2026-03-04 05:55:52.389Z | 228.44° WSW | 41.785° | 2026-03-04 05:59:52.389Z | 123.114° SE |
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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