STARLINK-5899, 55949

Orbit data source: Space-Track

STARLINK-5899, 55949 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 17 Mar 2023 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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/55949?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

55949, 2023-037AM

Orbit

LEO

Last TLE update

9 hours ago

Origin

SpaceX (US)

Manufacturer

SpaceX/Seattle

Mission

Operational Commercial Communications

Bus & Motor

STARLINK, Unknown motor

Mass

305 kg wet, ~290 kg dry

Launch date (UTC)

2023-03-17 (2 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 9 m

Radar Cross Section

11.087 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 9 hours ago

0 STARLINK-5899
1 55949U 23037AM  25197.18930822  .00000101  00000-0  16250-4 0  9994
2 55949  70.0000 140.9213 0003003 267.9194  92.1621 14.98329766129384

Epoch: 2025-07-16T04:32Z

TLE epoch observation values (Epoch: 2025-07-16T04:32:36.23Z)

Latitude

-0.00003°

Longitude

138.49729°

Altitude

574.56 km

Speed

7.574 km/s

True Right ascension

09h 23m 41s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-69.36317°

Longitude

63.5445°

Altitude

595.357 km

Speed

7.562 km/s

Apparent Right ascension

12h 49m 26s

Apparent Declination

-74° 04' 34"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

02:24:59

Azimuth

169.093° S

Elevation

-54.042°

Doppler factor

Orbital elements

Apogee altitude

572.091 km

Perigee altitude

567.918 km

Semi-major axis

6,948.142 km

Eccentricity

0.0003

Inclination

70°

RAAN

140.9213°

Arg. of periapsis

267.9194°

True anomaly

Unknown

Mean anomaly

92.1621°

Eccentric anomaly

Unknown

Mean motion

3.74749 °/min

Orbital period

96.06 mins

BSTAR

0.00001625

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Other satellites on launch #37 in the year 2023 (2023-03-17 UTC)

STARLINK-5899 Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-16 20:41:51.304Z	142.827° SSE	2025-07-16 20:44:51.304Z	94.702° ESE	16.533°	2025-07-16 20:46:51.304Z	64.808° ENE
6 mins	2025-07-16 22:19:51.304Z	241.644° WSW	2025-07-16 22:22:51.304Z	316.955° NNW	30.317°	2025-07-16 22:25:51.304Z	6.021° NNE
6 mins	2025-07-17 06:43:51.304Z	0.456° NNE	2025-07-17 06:46:51.304Z	72.667° E	30.984°	2025-07-17 06:49:51.304Z	125.987° SE
4 mins	2025-07-17 08:22:51.304Z	284.221° WNW	2025-07-17 08:24:51.304Z	249.898° W	16.478°	2025-07-17 08:26:51.304Z	219.25° SW

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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Authenticating...

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Check out STARLINK-5899, 55949 on other resources

View STARLINK-5899, 55949 on NASA - NSSDCA Website

View STARLINK-5899, 55949 on Heavens-Above

View STARLINK-5899, 55949 on Keep Track

View STARLINK-5899, 55949 on Celestrak

View STARLINK-5899, 55949 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.