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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Iframe URL

https://www.satcat.com/sats-embedded/46051?theme=dark&initialShowStats=false

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ISO8601 Format

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 (5 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, 4.4 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-1540
1 46051U 20055AA  25241.75875155  .00001069  00000-0  90631-4 0  9994
2 46051  53.0537 258.2302 0000778  79.7554 280.3523 15.06385589280117

Epoch: 2025-08-29T18:12Z

TLE epoch observation values (Epoch: 2025-08-29T18:12:36.133Z)

Latitude

-0.00002°

Longitude

6.87683°

Altitude

548.038 km

Speed

7.589 km/s

True Right ascension

17h 12m 55s

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

16:42:03

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

548.065 km

Perigee altitude

546.988 km

Semi-major axis

6,925.664 km

Eccentricity

0.00008

Inclination

53.0537°

RAAN

258.2302°

Arg. of periapsis

79.7554°

True anomaly

280.34353°

Mean anomaly

280.3523°

Eccentric anomaly

280.34791°

Mean motion

3.76575 °/min

Orbital period

95.6 mins

BSTAR

0.000090631

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

STARLINK-1561, 46056 (Decayed)

STARLINK-1562, 46057 (Decayed)

STARLINK-1574, 46062 (Decayed)

STARLINK-1577, 46063

STARLINK-1583, 46064

STARLINK-1540 Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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	2025-08-31 03:50:38.698Z	235.919° WSW	2025-08-31 03:53:38.698Z	5.896° NNE	43.798°	2025-08-31 03:56:38.698Z	47.026° ENE
4 mins	2025-08-31 05:31:38.698Z	306.927° NW	2025-08-31 05:33:38.698Z	344.028° N	18.566°	2025-08-31 05:35:38.698Z	18.482° NNE
4 mins	2025-08-31 08:53:38.698Z	354.107° N	2025-08-31 08:54:38.698Z	14.303° NNE	20.716°	2025-08-31 08:57:38.698Z	69.582° E
6 mins	2025-08-31 10:32:38.698Z	305.573° NW	2025-08-31 10:34:38.698Z	274.582° WNW	43.759°	2025-08-31 10:38:38.698Z	135.46° SSE