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: 11 hours ago
TLE from 11 hours ago
0 STARLINK-1255
1 45399U 20019AR 25312.17852826 .00084335 00000-0 27363-2 0 9990
2 45399 53.0481 318.3384 0003324 43.0045 317.1214 15.31252465311694Epoch: 2025-11-08T04:17Z
TLE epoch observation values (Epoch: 2025-11-08T04:17:04.841Z)
Latitude
-0.00004°
Longitude
-153.54366°
Altitude
471.294 km
Speed
7.633 km/s
True Right ascension
21h 13m 21s
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
11:23:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
474.626 km
Perigee altitude
470.072 km
Semi-major axis
6,850.486 km
Eccentricity
0.00033
Inclination
53.0481°
RAAN
318.3384°
Arg. of periapsis
43.0045°
True anomaly
317.09547°
Mean anomaly
317.1214°
Eccentric anomaly
317.10844°
Mean motion
3.8279 °/min
Orbital period
94.05 mins
BSTAR
0.0027363
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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 | 2025-11-09 02:22:32.281Z | 182.099° SSW | 2025-11-09 02:24:32.281Z | 140.262° SSE | 24.106° | 2025-11-09 02:27:32.281Z | 75.941° E |
| 5 mins | 2025-11-09 04:00:32.281Z | 271.141° WNW | 2025-11-09 04:02:32.281Z | 326.492° NNW | 30.713° | 2025-11-09 04:05:32.281Z | 33.809° NE |
| 4 mins | 2025-11-09 08:57:32.281Z | 345.226° N | 2025-11-09 08:59:32.281Z | 39.363° NE | 25.471° | 2025-11-09 09:01:32.281Z | 82.624° E |
| 4 mins | 2025-11-09 10:35:32.281Z | 276.796° WNW | 2025-11-09 10:37:32.281Z | 208.449° SW | 30.646° | 2025-11-09 10:39:32.281Z | 164.773° S |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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