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IRIDE FM4, 66698

Orbit data source: Space-Track

IRIDE FM4, 66698 is an Italian payload satellite in SSO that was launched on Fri, 28 Nov 2025 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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https://www.satcat.com/sats-embedded/66698?theme=dark&initialShowStats=false

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Identifier

66698, 2025-276AJ

Orbit

SSO

Country

Related business

Italian Space Agency (IT)

Manufacturer

OHB-I

Mission

Operational Commercial Technology

Bus & Motor

EAGLET, Unknown motor

Mass

25 kg wet, 25 kg dry

Launch date (UTC)

2025-11-28 (9 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, 1.0 m

Radar Cross Section

0.368 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 IRIDE FM4
1 66698U 25276AJ  26238.65462110  .00004321  00000-0  20135-3 0  9997
2 66698  97.4146 310.9413 0005548 112.6180 247.5643 15.20401849 41123

Epoch: 2026-08-26T15:42Z

TLE epoch observation values (Epoch: 2026-08-26T15:42:39.263Z)

Latitude

0.00004°

Longitude

100.37319°

Altitude

509.178 km

Speed

7.609 km/s

True Right ascension

20h 43m 45s

True Declination

0° 00' 00"

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

17:12:01

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

505.41 km

Perigee altitude

497.776 km

Semi-major axis

6,879.73 km

Eccentricity

0.00055

Inclination

97.4146°

RAAN

310.9413°

Arg. of periapsis

112.618°

True anomaly

247.50555°

Mean anomaly

247.5643°

Eccentric anomaly

247.53492°

Mean motion

3.80352 °/min

Orbital period

94.65 mins

BSTAR

0.00020135

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Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

LEMUR-2-CELIJO-SB-PK, 66781

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

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IRIDE FM4 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	2026-08-27 04:29:12.798Z	134.899° SE	2026-08-27 04:32:12.798Z	55.109° ENE	30.194°	2026-08-27 04:34:12.798Z	12.312° NNE
5 mins	2026-08-27 17:34:12.798Z	32.373° NE	2026-08-27 17:36:12.798Z	127.978° SE	39.15°	2026-08-27 17:39:12.798Z	179.589° S

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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 IRIDE FM4, 66698 on other resources

View IRIDE FM4, 66698 on NASA - NSSDCA Website

View IRIDE FM4, 66698 on Heavens-Above

View IRIDE FM4, 66698 on Keep Track

View IRIDE FM4, 66698 on Celestrak

View IRIDE FM4, 66698 on Gunter's Space Page

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

IRIDE FM4, 66698

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-08-26T15:42:39.263Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

IRIDE FM4 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDE FM4, 66698 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago