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 (7 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  26282.31554630  .00085894  00000-0  45847-3 0  9994
2 45399  53.0296 131.1851 0004573 156.0560 204.0674 15.79677886363929

Epoch: 2026-10-09T07:34Z

TLE epoch observation values (Epoch: 2026-10-09T07:34:23.200Z)

Latitude

-0.00001°

Longitude

-0.35036°

Altitude

335.059 km

Speed

7.707 km/s

True Right ascension

08h 44m 44s

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

12:21:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

334.704 km

Perigee altitude

328.567 km

Semi-major axis

6,709.773 km

Eccentricity

0.00046

Inclination

53.0296°

RAAN

131.1851°

Arg. of periapsis

156.056°

True anomaly

204.04604°

Mean anomaly

204.0674°

Eccentric anomaly

204.05672°

Mean motion

3.94895 °/min

Orbital period

91.16 mins

BSTAR

0.00045847

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

STARLINK-1318, 45416 (Decayed)

STARLINK-1257, 45402 (Decayed)

STARLINK-1312, 45398 (Decayed)

STARLINK-1295, 45373 (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.
4 mins	2026-10-10 23:34:07.338Z	291.742° WNW	2026-10-10 23:35:07.338Z	260.928° W	45.849°	2026-10-10 23:38:07.338Z	145.67° SSE
4 mins	2026-10-11 15:56:07.338Z	210.994° SW	2026-10-11 15:58:07.338Z	96.571° ESE	50.408°	2026-10-11 16:00:07.338Z	58.514° ENE

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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: 2026-10-09T07:34:23.200Z)

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