STARLINK-2555, 48291

Orbit data source: Space-Track

STARLINK-2555, 48291 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 29 Apr 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/48291?theme=dark&initialShowStats=false

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Identifier

48291, 2021-036R

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)

2021-04-29 (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, 10.1 m

Radar Cross Section

13.562 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 STARLINK-2555
1 48291U 21036R   26138.17188787  .00000886  00000-0  40309-4 0  9995
2 48291  53.1584 114.6811 0001432  80.6471 279.4692 15.31705701279018

Epoch: 2026-05-18T04:07Z

TLE epoch observation values (Epoch: 2026-05-18T04:07:31.111Z)

Latitude

-0.00007°

Longitude

176.93745°

Altitude

471.462 km

Speed

7.632 km/s

True Right ascension

07h 38m 43s

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

20:49:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

471.961 km

Perigee altitude

469.999 km

Semi-major axis

6,849.117 km

Eccentricity

0.00014

Inclination

53.1584°

RAAN

114.6811°

Arg. of periapsis

80.6471°

True anomaly

279.45301°

Mean anomaly

279.4692°

Eccentric anomaly

279.46111°

Mean motion

3.82905 °/min

Orbital period

94.02 mins

BSTAR

0.000040309

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Other satellites on launch #36 in the year 2021 (2021-04-29 UTC)

STARLINK-2540, 48290 (Decayed)

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STARLINK-2555 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.
6 mins	2026-05-19 00:39:00.496Z	204.702° SW	2026-05-19 00:42:00.496Z	122.383° SE	35.313°	2026-05-19 00:45:00.496Z	62.273° ENE
4 mins	2026-05-19 02:18:00.496Z	290.501° WNW	2026-05-19 02:20:00.496Z	339.997° N	23.139°	2026-05-19 02:22:00.496Z	21.61° NNE
5 mins	2026-05-19 07:14:00.496Z	330.141° NNW	2026-05-19 07:16:00.496Z	18.407° NNE	32.63°	2026-05-19 07:19:00.496Z	100.598° ESE

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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-2555, 48291 on other resources

View STARLINK-2555, 48291 on NASA - NSSDCA Website

View STARLINK-2555, 48291 on Heavens-Above

View STARLINK-2555, 48291 on Keep Track

View STARLINK-2555, 48291 on Celestrak

View STARLINK-2555, 48291 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-2555, 48291

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-05-18T04:07:31.111Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #36 in the year 2021 (2021-04-29 UTC)

STARLINK-2555 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STARLINK-2555, 48291 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago