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: 1 day ago
TLE from 1 day ago
0 STARLINK-1255
1 45399U 20019AR 25312.30906381 .00091549 00000-0 29629-2 0 9993
2 45399 53.0484 317.7292 0003543 40.9171 319.2095 15.31290152311715Epoch: 2025-11-08T07:25Z
TLE epoch observation values (Epoch: 2025-11-08T07:25:03.113Z)
Latitude
0.00006°
Longitude
158.72575°
Altitude
471.013 km
Speed
7.633 km/s
True Right ascension
21h 10m 55s
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
08:40:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
474.664 km
Perigee altitude
469.81 km
Semi-major axis
6,850.374 km
Eccentricity
0.00035
Inclination
53.0484°
RAAN
317.7292°
Arg. of periapsis
40.9171°
True anomaly
319.18297°
Mean anomaly
319.2095°
Eccentric anomaly
319.19623°
Mean motion
3.828 °/min
Orbital period
94.04 mins
BSTAR
0.0029629
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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 | 2025-11-10 01:51:40.924Z | 177.728° S | 2025-11-10 01:53:40.924Z | 140.651° SSE | 20.487° | 2025-11-10 01:56:40.924Z | 80.275° E |
| 5 mins | 2025-11-10 03:29:40.924Z | 264.48° W | 2025-11-10 03:31:40.924Z | 323.745° NNW | 33.916° | 2025-11-10 03:34:40.924Z | 35.98° NE |
| 4 mins | 2025-11-10 08:26:40.924Z | 347.554° N | 2025-11-10 08:28:40.924Z | 37.975° NE | 23.058° | 2025-11-10 08:30:40.924Z | 78.404° E |
| 5 mins | 2025-11-10 10:04:40.924Z | 283.261° WNW | 2025-11-10 10:06:40.924Z | 203.316° SW | 34.778° | 2025-11-10 10:09:40.924Z | 151.539° SSE |
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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