STARLINK-1255, 45399
Orbit data source: Space-Track
STARLINK-1255, 45399 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 18 Mar 2020 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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45399 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Partially operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
260 kg wet, ~248 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: 20 hours ago
TLE from 20 hours ago
0 STARLINK-1255
1 45399U 20019AR 26222.81498381 .00035531 00000-0 27058-3 0 9990
2 45399 53.0311 67.9172 0000963 8.0704 352.0329 15.71932714354549Epoch: 2026-08-10T19:33Z
TLE epoch observation values (Epoch: 2026-08-10T19:33:34.601Z)
Latitude
0.00004°
Longitude
175.23084°
Altitude
353.634 km
Speed
7.699 km/s
True Right ascension
04h 31m 40s
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
06:19:36
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
354.304 km
Perigee altitude
353.008 km
Semi-major axis
6,731.793 km
Eccentricity
0.0001
Inclination
53.0311°
RAAN
67.9172°
Arg. of periapsis
8.0704°
True anomaly
352.03137°
Mean anomaly
352.0329°
Eccentric anomaly
352.03214°
Mean motion
3.92959 °/min
Orbital period
91.61 mins
BSTAR
0.00027058
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Other satellites on launch #19 in the year 2020 (2020-03-18 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-1255 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-08-11 17:08:33.383Z | 268.826° W | 2026-08-11 17:10:33.383Z | 331.834° NNW | 27.741° | 2026-08-11 17:12:33.383Z | 27.659° NE |
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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