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STARLINK-38121, 100156

Orbit data source: Space-Track

STARLINK-38121, 100156 is a payload satellite owned by SpaceX/Seattle (US) in SSO that was launched on Sat, 25 Jul 2026 UTC launched 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 src="https://www.satcat.com/sats-embedded/100156?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/100156?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

100156, 2026-171J

Orbit

SSO

Country

US

Related business

Manufacturer

SpaceX/Seattle

Mission

Operational spacecraft

Bus & Motor

STARLINK V2MO, Unknown motor

Mass

575 kg wet, ~530 kg dry

Launch date (UTC)

2026-07-25 (6 days ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

BOX + PAN, 17.7 m

Radar Cross Section

RCS unknown

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 STARLINK-38121
1 A0156U 26171J   26210.75002315 -.02273055  14909-2 -50282-2 0  9993
2 A0156  97.2826 241.6615 0001277  85.2742 225.0229 15.98166129  1784

Epoch: 2026-07-29T18:00Z

TLE epoch observation values (Epoch: 2026-07-29T18:00:02.000Z)

Latitude

-49.4396°

Longitude

32.79072°

Altitude

299.383 km

Speed

7.726 km/s

True Right ascension

16h 40m 47s

True Declination

-49° 15' 29"

Sunlit

Object was in full shadow 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

10:40:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

277.214 km

Perigee altitude

275.514 km

Semi-major axis

6,654.501 km

Eccentricity

0.00013

Inclination

97.2826°

RAAN

241.6615°

Arg. of periapsis

85.2742°

True anomaly

225.01255°

Mean anomaly

225.0229°

Eccentric anomaly

225.01772°

Mean motion

3.99825 °/min

Orbital period

90.04 mins

BSTAR

-0.0050282

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Other satellites on launch #171 in the year 2026 (2026-07-25 UTC)

STARLINK-38111, 100152

STARLINK-38173, 100151

STARLINK-38175, 100161

STARLINK-38162, 100159

STARLINK-38136, 100166

STARLINK-38132, 100154

STARLINK-38127, 100155

STARLINK-38081, 100153

STARLINK-38100, 100149

STARLINK-38186, 100162

STARLINK-38079, 100165

STARLINK-38182, 100148

STARLINK-38149, 100169

STARLINK-38198, 100160

STARLINK-38152, 100157

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

STARLINK-38121 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.
4 mins	2026-08-01 02:06:21.849Z	158.544° S	2026-08-01 02:08:21.849Z	50.434° ENE	42.251°	2026-08-01 02:10:21.849Z	354.314° N

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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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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out STARLINK-38121, 100156 on other resources

View STARLINK-38121, 100156 on NASA - NSSDCA Website

View STARLINK-38121, 100156 on Heavens-Above

View STARLINK-38121, 100156 on Keep Track

View STARLINK-38121, 100156 on Celestrak

View STARLINK-38121, 100156 on Gunter's Space Page

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

Documentation

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