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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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Iframe URL

https://www.satcat.com/sats-embedded/66698?theme=dark&initialShowStats=false

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ISO8601 Format

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 (7 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: 18 hours ago

TLE from 18 hours ago

0 IRIDE FM4
1 66698U 25276AJ  26192.51328173  .00003222  00000-0  15273-3 0  9997
2 66698  97.4183 265.5695 0002251 279.0484  81.0497 15.20015260 34111

Epoch: 2026-07-11T12:19Z

TLE epoch observation values (Epoch: 2026-07-11T12:19:07.541Z)

Latitude

0.00005°

Longitude

151.36265°

Altitude

508.644 km

Speed

7.61 km/s

True Right ascension

17h 42m 16s

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

18:21:06

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

504.31 km

Perigee altitude

501.212 km

Semi-major axis

6,880.898 km

Eccentricity

0.00023

Inclination

97.4183°

RAAN

265.5695°

Arg. of periapsis

279.0484°

True anomaly

81.07518°

Mean anomaly

81.0497°

Eccentric anomaly

81.06244°

Mean motion

3.80255 °/min

Orbital period

94.67 mins

BSTAR

0.00015273

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

OBJECT DD, 66765

GYEONGGISAT-1, 66771

OTTER SDM, 66678

LEMUR-2-TEODOR, 66768

LEMUR-2-VUKASIN, 66785

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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	2026-07-12 17:19:58.545Z	36.34° NE	2026-07-12 17:21:58.545Z	78.352° E	30.122°	2026-07-12 17:24:58.545Z	160.153° S
5 mins	2026-07-13 05:31:58.545Z	210.715° SW	2026-07-13 05:33:58.545Z	258.113° W	27.049°	2026-07-13 05:36:58.545Z	322.966° NNW

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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: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2026-07-11T12:19:07.541Z)

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: 18 hours ago