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STARLINK-35956, 66629

Orbit data source: Space-Track

STARLINK-35956, 66629 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 23 Nov 2025 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR).

U.S. Space Forces-Space (S4S) has confirmed an anomalous debris event of STARLINK-35956 (INTLDES 2025-271, 66629), which likely occurred 18 Dec 25 at 0140 UTC. There is no assessed risk to the ISS. Analysis is ongoing. Please refer to SpaceX for additional information on this event.

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Iframe URL

https://www.satcat.com/sats-embedded/66629?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66629, 2025-271N

Orbit

LEO

Country

US

Related business

Manufacturer

SpaceX/Seattle

Mission

Non-operational Commercial Communications

Bus & Motor

STARLINK V2MO, Unknown motor

Mass

575 kg wet, ~530 kg dry

Launch date (UTC)

2025-11-23 (2 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 17.7 m

Radar Cross Section

36.964 m²

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 STARLINK-35956
1 66629U 25271N   26014.24574260  .01830387  19643-2  43148-2 0  9996
2 66629  53.1599  28.3008 0013895  87.5990 272.6630 15.96510311  4156

Epoch: 2026-01-14T05:53Z

TLE epoch observation values (Epoch: 2026-01-14T05:53:52.160Z)

Latitude

-0.00004°

Longitude

-173.88306°

Altitude

284.618 km

Speed

7.738 km/s

True Right ascension

01h 53m 12s

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

17:02:53

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

293.631 km

Perigee altitude

275.115 km

Semi-major axis

6,662.51 km

Eccentricity

0.00139

Inclination

53.1599°

RAAN

28.3008°

Arg. of periapsis

87.599°

True anomaly

272.50393°

Mean anomaly

272.663°

Eccentric anomaly

272.58347°

Mean motion

3.99104 °/min

Orbital period

90.2 mins

BSTAR

0.0043148

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Computing Atmospheric mass density...

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Other satellites on launch #271 in the year 2025 (2025-11-23 UTC)

STARLINK-35970, 66618

STARLINK-35927, 66624

STARLINK-35862, 66628

STARLINK-35973, 66632

STARLINK-35929, 66625

STARLINK-35936, 66620

STARLINK-35926, 66642

STARLINK-35923, 66641

STARLINK-35948, 66633

STARLINK-35955, 66635

STARLINK-35953, 66637

STARLINK-35904, 66627

STARLINK-35967, 66634

STARLINK-35968, 66636

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-35956 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	2026-01-15 03:04:45.960Z	204.109° SW	2026-01-15 03:06:45.960Z	141.639° SSE	29.889°	2026-01-15 03:08:45.960Z	68.606° E

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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-35956, 66629 on other resources

View STARLINK-35956, 66629 on NASA - NSSDCA Website

View STARLINK-35956, 66629 on Heavens-Above

View STARLINK-35956, 66629 on Keep Track

View STARLINK-35956, 66629 on Celestrak

View STARLINK-35956, 66629 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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