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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Edit Public Description
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: 12 hours ago
TLE from 12 hours ago
0 STARLINK-1255
1 45399U 20019AR 25333.10791316 .00067154 00000-0 19907-2 0 9997
2 45399 53.0464 220.4745 0007611 108.6604 251.5224 15.34219401314906Epoch: 2025-11-29T02:35Z
TLE epoch observation values (Epoch: 2025-11-29T02:35:23.697Z)
Latitude
0.00001°
Longitude
113.38491°
Altitude
465.783 km
Speed
7.634 km/s
True Right ascension
14h 41m 53s
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
12:02:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
468.723 km
Perigee altitude
458.308 km
Semi-major axis
6,841.652 km
Eccentricity
0.00076
Inclination
53.0464°
RAAN
220.4745°
Arg. of periapsis
108.6604°
True anomaly
251.43971°
Mean anomaly
251.5224°
Eccentric anomaly
251.48105°
Mean motion
3.83532 °/min
Orbital period
93.86 mins
BSTAR
0.0019907
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-11-29 18:22:27.859Z | 177.467° S | 2025-11-29 18:25:27.859Z | 118.669° SE | 19.011° | 2025-11-29 18:27:27.859Z | 82.888° E |
| 5 mins | 2025-11-29 20:00:27.859Z | 262.583° W | 2025-11-29 20:02:27.859Z | 326.646° NNW | 34.982° | 2025-11-29 20:05:27.859Z | 37.435° NE |
| 5 mins | 2025-11-30 02:34:27.859Z | 289.388° WNW | 2025-11-30 02:36:27.859Z | 212.768° SW | 37.25° | 2025-11-30 02:39:27.859Z | 149.586° 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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