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: 1 day ago
TLE from 1 day ago
0 STARLINK-1255
1 45399U 20019AR 25258.26254082 .00001615 00000-0 12725-3 0 9996
2 45399 53.0539 204.1436 0001167 91.1505 268.9618 15.06407459303516Epoch: 2025-09-15T06:18Z
TLE epoch observation values (Epoch: 2025-09-15T06:18:03.526Z)
Latitude
-0.00001°
Longitude
115.15918°
Altitude
548.083 km
Speed
7.589 km/s
True Right ascension
13h 36m 34s
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
23:22:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.268 km
Perigee altitude
546.651 km
Semi-major axis
6,925.597 km
Eccentricity
0.00012
Inclination
53.0539°
RAAN
204.1436°
Arg. of periapsis
91.1505°
True anomaly
268.94843°
Mean anomaly
268.9618°
Eccentric anomaly
268.95511°
Mean motion
3.7658 °/min
Orbital period
95.6 mins
BSTAR
0.00012725
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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 06:42:48.323Z | 293.345° NW | 2025-09-16 06:46:48.323Z | 212.188° SW | 29.88° | 2025-09-16 06:49:48.323Z | 162.476° S |
| 6 mins | 2025-09-16 22:16:48.323Z | 193.751° SSW | 2025-09-16 22:18:48.323Z | 150.054° SSE | 32.552° | 2025-09-16 22:22:48.323Z | 64.383° ENE |
| 5 mins | 2025-09-16 23:56:48.323Z | 282.526° WNW | 2025-09-16 23:58:48.323Z | 331.129° NNW | 28.206° | 2025-09-17 00:01:48.323Z | 30.507° NE |
| 6 mins | 2025-09-17 04:57:48.323Z | 326.422° NNW | 2025-09-17 05:00:48.323Z | 42.426° NE | 34.722° | 2025-09-17 05:03:48.323Z | 103.034° ESE |
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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