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
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: 4 hours ago
TLE from 4 hours ago
0 STARLINK-1255
1 45399U 20019AR 25291.33336806 .01803289 00000-0 69973-1 0 9999
2 45399 53.0538 55.2331 0001546 101.3364 293.0772 15.22503765 5897Epoch: 2025-10-18T08:00Z
TLE epoch observation values (Epoch: 2025-10-18T08:00:03.000Z)
Latitude
26.91798°
Longitude
-69.52744°
Altitude
499.098 km
Speed
7.619 km/s
True Right ascension
05h 10m 12s
True Declination
26° 46' 27"
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
06:52:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
499.627 km
Perigee altitude
497.501 km
Semi-major axis
6,876.701 km
Eccentricity
0.00015
Inclination
53.0538°
RAAN
55.2331°
Arg. of periapsis
101.3364°
True anomaly
293.0609°
Mean anomaly
293.0772°
Eccentric anomaly
293.06905°
Mean motion
3.80604 °/min
Orbital period
94.59 mins
BSTAR
0.069973
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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 | 2025-10-18 12:49:53.911Z | 289.695° WNW | 2025-10-18 12:51:53.911Z | 325.909° NNW | 20.09° | 2025-10-18 12:54:53.911Z | 23.853° NE |
| 6 mins | 2025-10-18 17:47:53.911Z | 319.211° NNW | 2025-10-18 17:50:53.911Z | 74.624° E | 40.05° | 2025-10-18 17:53:53.911Z | 118.612° SE |
| 6 mins | 2025-10-19 10:46:53.911Z | 216.538° SW | 2025-10-19 10:49:53.911Z | 93.562° ESE | 40.61° | 2025-10-19 10:52:53.911Z | 55.551° ENE |
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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