STARLINK-2257, 47787

Orbit data source: Space-Track

STARLINK-2257, 47787 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 11 Mar 2021 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/47787?theme=dark&initialShowStats=false

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Identifier

47787, 2021-018A

Orbit

LEO

Last TLE update

20 hours ago

Origin

SpaceX (US)

Manufacturer

SpaceX/Seattle

Mission

Operational Commercial Communications

Bus & Motor

STARLINK, Unknown motor

Mass

260 kg wet, ~248 kg dry

Launch date (UTC)

2021-03-11 (4 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

TLE from 20 hours ago

0 STARLINK-2257
1 47787U 21018A   25229.88311374  .00003180  00000-0  23223-3 0  9997
2 47787  53.0539  86.5446 0001286  93.5861 266.5275 15.06404160245878

Epoch: 2025-08-17T21:11Z

TLE epoch observation values (Epoch: 2025-08-17T21:11:41.027Z)

Latitude

-0.00001°

Longitude

162.12604°

Altitude

548.132 km

Speed

7.589 km/s

True Right ascension

05h 46m 10s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-25.47065°

Longitude

-0.75219°

Altitude

555.002 km

Speed

7.584 km/s

Apparent Right ascension

19h 24m 44s

Apparent Declination

-32° 30' 45"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

08:03:15

Azimuth

49.327° ENE

Elevation

-79.28°

Doppler factor

Orbital elements

Apogee altitude

548.36 km

Perigee altitude

546.579 km

Semi-major axis

6,925.607 km

Eccentricity

0.00013

Inclination

53.0539°

RAAN

86.5446°

Arg. of periapsis

93.5861°

True anomaly

266.51279°

Mean anomaly

266.5275°

Eccentric anomaly

266.52015°

Mean motion

3.76579 °/min

Orbital period

95.6 mins

BSTAR

0.00023223

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Other satellites on launch #18 in the year 2021 (2021-03-11 UTC)

STARLINK-2392, 47811 (Decayed)

STARLINK-2393, 47812

STARLINK-2394, 47813 (Decayed)

STARLINK-2403, 47820 (Decayed)

STARLINK-2257 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.
7 mins	2025-08-18 18:06:27.269Z	261.876° W	2025-08-18 18:10:27.269Z	344.781° N	30.155°	2025-08-18 18:13:27.269Z	35.319° NE
6 mins	2025-08-18 23:09:27.269Z	332.995° NNW	2025-08-18 23:11:27.269Z	17.074° NNE	31.338°	2025-08-18 23:15:27.269Z	100.313° ESE
5 mins	2025-08-19 00:49:27.269Z	273.492° WNW	2025-08-19 00:51:27.269Z	223.283° SW	27.752°	2025-08-19 00:54:27.269Z	168.569° S
6 mins	2025-08-19 16:21:27.269Z	201.357° SSW	2025-08-19 16:24:27.269Z	118.897° SE	35.574°	2025-08-19 16:27:27.269Z	63.465° ENE