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, 4.4 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 STARLINK-1255
1 45399U 20019AR 25259.25773141 .00004493 00000-0 32015-3 0 9999
2 45399 53.0529 199.6762 0001238 89.0499 271.0631 15.06419375303668Epoch: 2025-09-16T06:11Z
TLE epoch observation values (Epoch: 2025-09-16T06:11:07.993Z)
Latitude
-0.00011°
Longitude
111.4422°
Altitude
548.015 km
Speed
7.589 km/s
True Right ascension
13h 18m 42s
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
05:38:06
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.281 km
Perigee altitude
546.566 km
Semi-major axis
6,925.56 km
Eccentricity
0.00012
Inclination
53.0529°
RAAN
199.6762°
Arg. of periapsis
89.0499°
True anomaly
271.04892°
Mean anomaly
271.0631°
Eccentric anomaly
271.05601°
Mean motion
3.76583 °/min
Orbital period
95.6 mins
BSTAR
0.00032015
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-09-16 22:15:40.670Z | 202.067° SSW | 2025-09-16 22:19:40.670Z | 114.201° SE | 32.297° | 2025-09-16 22:22:40.670Z | 65.014° ENE |
| 5 mins | 2025-09-16 23:56:40.670Z | 280.882° WNW | 2025-09-16 23:58:40.670Z | 327.494° NNW | 28.182° | 2025-09-17 00:01:40.670Z | 29.489° NE |
| 5 mins | 2025-09-17 04:58:40.670Z | 335.733° NNW | 2025-09-17 05:00:40.670Z | 37.309° NE | 34.867° | 2025-09-17 05:03:40.670Z | 102.302° ESE |
| 5 mins | 2025-09-17 06:37:40.670Z | 275.996° WNW | 2025-09-17 06:39:40.670Z | 236.842° WSW | 24.014° | 2025-09-17 06:42:40.670Z | 178.402° 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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