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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https://www.satcat.com/sats-embedded/45399?theme=dark&initialShowStats=false

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Identifier

45399, 2020-019AR

Orbit

LEO

Country

Related business

SpaceX (US)

Manufacturer

SpaceX/Seattle

Mission

Partially operational Commercial Communications

Bus & Motor

STARLINK, Unknown motor

Mass

260 kg wet, ~248 kg dry

Launch date (UTC)

2020-03-18 (6 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 10.1 m

Radar Cross Section

13.562 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 STARLINK-1255
1 45399U 20019AR  26072.29472361  .00098125  00000-0  15591-2 0  9991
2 45399  53.0419  85.3824 0001761   0.3211 359.7799 15.52560572330997

Epoch: 2026-03-13T07:04Z

TLE epoch observation values (Epoch: 2026-03-13T07:04:24.119Z)

Latitude

-0.00002°

Longitude

168.34957°

Altitude

408.953 km

Speed

7.667 km/s

True Right ascension

05h 41m 31s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

17:00:09

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

410.726 km

Perigee altitude

408.336 km

Semi-major axis

6,787.668 km

Eccentricity

0.00018

Inclination

53.0419°

RAAN

85.3824°

Arg. of periapsis

0.3211°

True anomaly

359.77982°

Mean anomaly

359.7799°

Eccentric anomaly

359.77986°

Mean motion

3.88117 °/min

Orbital period

92.76 mins

BSTAR

0.0015591

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Other satellites on launch #19 in the year 2020 (2020-03-18 UTC)

FALCON 9 DEB, 45421 (Decayed)

STARLINK-1207, 45380 (Decayed)

STARLINK-1268, 45385 (Decayed)

FALCON 9 DEB, 45423 (Decayed)

STARLINK-1317, 45365 (Decayed)

STARLINK-1283, 45389

STARLINK-1290, 45392 (Decayed)

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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.

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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	2026-03-15 02:29:03.358Z	197.598° SSW	2026-03-15 02:32:03.358Z	126.137° SE	27.957°	2026-03-15 02:34:03.358Z	75.41° E
4 mins	2026-03-15 04:07:03.358Z	291.917° WNW	2026-03-15 04:08:03.358Z	320.269° NNW	23.961°	2026-03-15 04:11:03.358Z	29.389° NE
4 mins	2026-03-15 08:59:03.358Z	343.378° N	2026-03-15 09:01:03.358Z	43.323° NE	25.245°	2026-03-15 09:03:03.358Z	88.067° E

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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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Check out STARLINK-1255, 45399 on other resources

View STARLINK-1255, 45399 on NASA - NSSDCA Website

View STARLINK-1255, 45399 on Heavens-Above

View STARLINK-1255, 45399 on Keep Track

View STARLINK-1255, 45399 on Celestrak

View STARLINK-1255, 45399 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

STARLINK-1255, 45399

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-03-13T07:04:24.119Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #19 in the year 2020 (2020-03-18 UTC)

STARLINK-1255 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STARLINK-1255, 45399 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago