STARLINK-2509, 48318

Orbit data source: Space-Track

STARLINK-2509, 48318 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/48318?theme=dark&initialShowStats=false

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Identifier

48318, 2021-036AU

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: 21 hours ago

TLE from 21 hours ago

0 STARLINK-2509
1 48318U 21036AU  26091.96922942  .00016243  00000-0  55943-3 0  9992
2 48318  53.1615 353.4113 0001140 108.9578 251.1546 15.30195417271595

Epoch: 2026-04-01T23:15Z

TLE epoch observation values (Epoch: 2026-04-01T23:15:41.421Z)

Latitude

-0.00007°

Longitude

174.16422°

Altitude

476.381 km

Speed

7.629 km/s

True Right ascension

23h 33m 38s

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

02:24:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

476.266 km

Perigee altitude

474.704 km

Semi-major axis

6,853.622 km

Eccentricity

0.00011

Inclination

53.1615°

RAAN

353.4113°

Arg. of periapsis

108.9578°

True anomaly

251.14224°

Mean anomaly

251.1546°

Eccentric anomaly

251.14842°

Mean motion

3.82528 °/min

Orbital period

94.11 mins

BSTAR

0.00055943

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

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STARLINK-2509 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.
5 mins	2026-04-02 21:27:01.935Z	283.09° WNW	2026-04-02 21:30:01.935Z	340.382° N	20.431°	2026-04-02 21:32:01.935Z	19.574° NNE
5 mins	2026-04-03 02:25:01.935Z	332.296° NNW	2026-04-03 02:27:01.935Z	62.023° ENE	37.323°	2026-04-03 02:30:01.935Z	113.521° SE
5 mins	2026-04-03 19:20:01.935Z	203.967° SW	2026-04-03 19:22:01.935Z	141.215° SSE	38.284°	2026-04-03 19:25:01.935Z	61.443° 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-2509, 48318 on other resources

View STARLINK-2509, 48318 on NASA - NSSDCA Website

View STARLINK-2509, 48318 on Heavens-Above

View STARLINK-2509, 48318 on Keep Track

View STARLINK-2509, 48318 on Celestrak

View STARLINK-2509, 48318 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-2509, 48318

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-04-01T23:15:41.421Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

STARLINK-2509 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STARLINK-2509, 48318 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 21 hours ago