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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Iframe URL

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: 13 hours ago

TLE from 13 hours ago

0 STARLINK-1255
1 45399U 20019AR  26038.00002315  .00164329  00000-0  32402-2 0  9990
2 45399  53.0449 249.7893 0007200 133.8706   2.1107 15.46100443  5897

Epoch: 2026-02-07T00:00Z

TLE epoch observation values (Epoch: 2026-02-07T00:00:02.000Z)

Latitude

33.83861°

Longitude

-97.45246°

Altitude

425.598 km

Speed

7.663 km/s

True Right ascension

02h 38m 44s

True Declination

33° 40' 19"

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

15:09:09

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

433.324 km

Perigee altitude

423.523 km

Semi-major axis

6,806.56 km

Eccentricity

0.00072

Inclination

53.0449°

RAAN

249.7893°

Arg. of periapsis

133.8706°

True anomaly

2.11374°

Mean anomaly

2.1107°

Eccentric anomaly

2.11222°

Mean motion

3.86502 °/min

Orbital period

93.14 mins

BSTAR

0.0032402

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

STARLINK-1289, 45391 (Decayed)

STARLINK-1291, 45393 (Decayed)

STARLINK-1295, 45373 (Decayed)

STARLINK-1268, 45385 (Decayed)

STARLINK-1288, 45372 (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.
6 mins	2026-02-07 16:38:58.287Z	223.056° SW	2026-02-07 16:41:58.287Z	181.05° SSW	42.98°	2026-02-07 16:44:58.287Z	54.396° ENE
5 mins	2026-02-07 23:10:58.287Z	323.944° NNW	2026-02-07 23:12:58.287Z	38.029° NE	39.777°	2026-02-07 23:15:58.287Z	115.737° SE

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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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-02-07T00:00:02.000Z)

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: 13 hours ago