STARLINK-1540, 46051

Orbit data source: Space-Track

STARLINK-1540, 46051 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 07 Aug 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/46051?theme=dark&initialShowStats=false

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Identifier

46051, 2020-055AA

Orbit

LEO

Country

Related business

SpaceX (US)

Manufacturer

SpaceX/Seattle

Mission

Operational Commercial Communications

Bus & Motor

STARLINK, Unknown motor

Mass

260 kg wet, ~248 kg dry

Launch date (UTC)

2020-08-07 (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: 19 hours ago

TLE from 19 hours ago

0 STARLINK-1540
1 46051U 20055AA  26126.61812053  .00007554  00000-0  26678-3 0  9994
2 46051  53.1582 204.7717 0001275  78.8362 281.2782 15.30216403317959

Epoch: 2026-05-06T14:50Z

TLE epoch observation values (Epoch: 2026-05-06T14:50:05.613Z)

Latitude

-0.00004°

Longitude

117.77225°

Altitude

475.895 km

Speed

7.629 km/s

True Right ascension

13h 39m 05s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

18:15:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

476.297 km

Perigee altitude

474.549 km

Semi-major axis

6,853.56 km

Eccentricity

0.00013

Inclination

53.1582°

RAAN

204.7717°

Arg. of periapsis

78.8362°

True anomaly

281.26387°

Mean anomaly

281.2782°

Eccentric anomaly

281.27104°

Mean motion

3.82533 °/min

Orbital period

94.11 mins

BSTAR

0.00026678

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Other satellites on launch #55 in the year 2020 (2020-08-07 UTC)

STARLINK-1515, 46065 (Decayed)

STARLINK-1561, 46056 (Decayed)

STARLINK-1535, 46050 (Decayed)

FALCON 9 DEB, 46086 (Decayed)

STARLINK-1534, 46030 (Decayed)

STARLINK-1562, 46057 (Decayed)

STARLINK-1533, 46069 (Decayed)

STARLINK-1574, 46062 (Decayed)

STARLINK-1539, 46072 (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-1540 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	2026-05-07 13:14:47.492Z	355.633° N	2026-05-07 13:15:47.492Z	17.106° NNE	19.071°	2026-05-07 13:18:47.492Z	73.236° E
6 mins	2026-05-07 14:51:47.492Z	304.334° NW	2026-05-07 14:54:47.492Z	167.896° S	41.369°	2026-05-07 14:57:47.492Z	138.125° SSE
5 mins	2026-05-08 07:47:47.492Z	241.922° WSW	2026-05-08 07:49:47.492Z	327.641° NNW	43.327°	2026-05-08 07:52:47.492Z	45.037° 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-1540, 46051 on other resources

View STARLINK-1540, 46051 on NASA - NSSDCA Website

View STARLINK-1540, 46051 on Heavens-Above

View STARLINK-1540, 46051 on Keep Track

View STARLINK-1540, 46051 on Celestrak

View STARLINK-1540, 46051 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-1540, 46051

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-05-06T14:50:05.613Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #55 in the year 2020 (2020-08-07 UTC)

STARLINK-1540 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STARLINK-1540, 46051 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago