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IRIDE FM5, 66699

Orbit data source: Space-Track

IRIDE FM5, 66699 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/66699?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66699, 2025-276AK

Orbit

SSO

Country

Related business

Italian Space Agency (IT)

Manufacturer

OHB-I

Mission

Operational spacecraft

Bus & Motor

EAGLET, Unknown motor

Mass

25 kg wet, 25 kg dry

Launch date (UTC)

2025-11-28 (4 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 1.0 m

Radar Cross Section

RCS unknown

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

TLE from 2 days ago

0 IRIDE FM5
1 66699U 25276AK  26091.14981802  .00011200  00000-0  53561-3 0  9996
2 66699  97.4243 166.0062 0002678 280.9216  79.1717 15.19157599 18721

Epoch: 2026-04-01T03:35Z

TLE epoch observation values (Epoch: 2026-04-01T03:35:44.276Z)

Latitude

-0.00007°

Longitude

-77.44506°

Altitude

511.128 km

Speed

7.608 km/s

True Right ascension

11h 04m 01s

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

02:58:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

507.196 km

Perigee altitude

503.51 km

Semi-major axis

6,883.49 km

Eccentricity

0.00027

Inclination

97.4243°

RAAN

166.0062°

Arg. of periapsis

280.9216°

True anomaly

79.20184°

Mean anomaly

79.1717°

Eccentric anomaly

79.18677°

Mean motion

3.80041 °/min

Orbital period

94.73 mins

BSTAR

0.00053561

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

PELICAN-6 300D, 66703

FLOCK 4H 12, 66715

FLOCK 4H 33, 66736

FLOCK 4H 23, 66726

LEMUR-2-DEANANDMAEVE, 66678

LEMUR-2-HOTSPUR-TOM, 66786

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.

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IRIDE FM5 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.
6 mins	2026-04-03 04:43:31.488Z	152.519° SSE	2026-04-03 04:46:31.488Z	96.612° ESE	39.186°	2026-04-03 04:49:31.488Z	0.259° NNE
5 mins	2026-04-03 17:49:31.488Z	11.91° NNE	2026-04-03 17:51:31.488Z	3.532° NNE	44.945°	2026-04-03 17:54:31.488Z	193.196° SSW

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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 FM5, 66699 on other resources

View IRIDE FM5, 66699 on NASA - NSSDCA Website

View IRIDE FM5, 66699 on Heavens-Above

View IRIDE FM5, 66699 on Keep Track

View IRIDE FM5, 66699 on Celestrak

View IRIDE FM5, 66699 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 FM5, 66699

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-04-01T03:35:44.276Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

IRIDE FM5 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDE FM5, 66699 on other resources

Documentation

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