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  26028.00003472  .00072452  00000-0  15517-2 0  9997
2 45399  53.0462 297.4257 0006827  99.6850 181.4034 15.44120867  5798

Epoch: 2026-01-28T00:00Z

TLE epoch observation values (Epoch: 2026-01-28T00:00:02.999Z)

Latitude

-51.80863°

Longitude

98.15239°

Altitude

456.556 km

Speed

7.636 km/s

True Right ascension

15h 01m 45s

True Declination

-51° 38' 02"

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

01:28:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

438.89 km

Perigee altitude

429.588 km

Semi-major axis

6,812.376 km

Eccentricity

0.00068

Inclination

53.0462°

RAAN

297.4257°

Arg. of periapsis

99.685°

True anomaly

181.40149°

Mean anomaly

181.4034°

Eccentric anomaly

181.40244°

Mean motion

3.86007 °/min

Orbital period

93.26 mins

BSTAR

0.0015517

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

STARLINK-1295, 45373 (Decayed)

STARLINK-1292, 45394 (Decayed)

FALCON 9 DEB, 45423 (Decayed)

STARLINK-1213, 45400 (Decayed)

STARLINK-1288, 45372 (Decayed)

STARLINK-1258, 45381 (Decayed)

STARLINK-1263, 45405

STARLINK-1297, 45395

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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	2026-01-29 01:38:05.340Z	342.756° N	2026-01-29 01:40:05.340Z	20.501° NNE	15.743°	2026-01-29 01:42:05.340Z	59.199° ENE
4 mins	2026-01-29 03:16:05.340Z	312.018° NW	2026-01-29 03:17:05.340Z	316.899° NNW	41.815°	2026-01-29 03:20:05.340Z	129.098° SE
5 mins	2026-01-29 20:01:05.340Z	218.509° SW	2026-01-29 20:03:05.340Z	175.037° S	42.121°	2026-01-29 20:06:05.340Z	55.818° 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: 2026-01-28T00:00:02.999Z)

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