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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.

Not visible in the next 10 days

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/45399?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

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

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ISO8601 Format

Identifier

45399, 2020-019AR

Orbit

LEO

Country

US

Related business

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: 9 hours ago

TLE from 9 hours ago

0 STARLINK-1255
1 45399U 20019AR  26253.30068513  .00067817  00000-0  43591-3 0  9990
2 45399  53.0301 276.3207 0005356  47.7956 312.3517 15.75591878359340

Epoch: 2026-09-10T07:12Z

TLE epoch observation values (Epoch: 2026-09-10T07:12:59.195Z)

Latitude

0.00002°

Longitude

178.7337°

Altitude

341.427 km

Speed

7.707 km/s

True Right ascension

18h 25m 16s

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

08:33:32

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

346.83 km

Perigee altitude

339.63 km

Semi-major axis

6,721.367 km

Eccentricity

0.00054

Inclination

53.0301°

RAAN

276.3207°

Arg. of periapsis

47.7956°

True anomaly

312.30632°

Mean anomaly

312.3517°

Eccentric anomaly

312.32901°

Mean motion

3.93873 °/min

Orbital period

91.4 mins

BSTAR

0.00043591

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Computing Atmospheric mass density...

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

STARLINK-1301, 45361 (Decayed)

STARLINK-1277, 45369

STARLINK-1305, 45377

STARLINK-1266, 45383

STARLINK-1292, 45394 (Decayed)

STARLINK-1303, 45396 (Decayed)

STARLINK-1293, 45411 (Decayed)

STARLINK-1302, 45375

STARLINK-1319, 45379

STARLINK-1280, 45388 (Decayed)

STARLINK-1284, 45390

STARLINK-1213, 45400 (Decayed)

STARLINK-1316, 45415

STARLINK-1285, 45410 (Decayed)

FALCON 9 DEB, 45420 (Decayed)

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

STARLINK-1255 Visibility

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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.
STARLINK-1255 is likely not visible in the next few days.

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.

Documentation

Go to standalone docs website

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