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DIADEME 1, 2674

Orbit data source: Space-Track

DIADEME 1, 2674 is a payload satellite owned by CNES (FR) in LEO that was launched on Wed, 08 Feb 1967 UTC via a DIAMANT A launch vehicle from the Hamma Guira Space Track Range (HGSTR). 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/2674?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/2674?theme=dark&initialShowStats=false

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Identifier

2674, 1967-011A

Orbit

LEO

Country

Related business

National Center for Space Studies, Paris (FR)

Manufacturer

CNES

Mission

Spacecraft

Bus & Motor

D-1, Unknown motor

Mass

23 kg wet, 23 kg dry

Launch date (UTC)

1967-02-08 (59 years ago)

Launch vehicle

DIAMANT A

Launch site

Hamma Guira Space Track Range (HGSTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 14 hours ago

TLE from 14 hours ago

0 DIADEME 1
1  2674U 67011A   26139.31508598  .00003328  00000-0  36800-3 0  9990
2  2674  39.9151 102.9481 0204060  51.0248 310.8522 14.74495579 85847

Epoch: 2026-05-19T07:33Z

TLE epoch observation values (Epoch: 2026-05-19T07:33:43.428Z)

Latitude

-0.00003°

Longitude

112.52635°

Altitude

554.154 km

Speed

7.636 km/s

True Right ascension

06h 51m 47s

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

06:16:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

792.556 km

Perigee altitude

505.758 km

Semi-major axis

7,027.294 km

Eccentricity

0.02041

Inclination

39.9151°

RAAN

102.9481°

Arg. of periapsis

51.0248°

True anomaly

309.05377°

Mean anomaly

310.8522°

Eccentric anomaly

309.95598°

Mean motion

3.68435 °/min

Orbital period

97.71 mins

BSTAR

0.000368

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Other satellites on launch #11 in the year 1967 (1967-02-08 UTC)

DIAMANT DEB, 2900 (Decayed)

DIAMANT DEB, 2692 (Decayed)

DIAMANT R/B, 2671

DIAMANT DEB, 2990 (Decayed)

DIAMANT DEB, 2677 (Decayed)

DIAMANT DEB, 2689 (Decayed)

DIAMANT DEB, 2691 (Decayed)

DIADEME 1 DEB *, 4009 (Decayed)

DIAMANT DEB, 2690 (Decayed)

DIAMANT DEB, 2673 (Decayed)

DIAMANT DEB, 2688 (Decayed)

DIADEME 1 DEB, 3742 (Decayed)

DIAMANT DEB, 2675 (Decayed)

DIAMANT DEB, 2676 (Decayed)

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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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DIADEME 1 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	2026-05-20 01:42:16.564Z	222.166° SW	2026-05-20 01:44:16.564Z	156.635° SSE	36.324°	2026-05-20 01:47:16.564Z	88.93° E
6 mins	2026-05-20 03:24:16.564Z	266.852° W	2026-05-20 03:27:16.564Z	87.422° E	43.269°	2026-05-20 03:30:16.564Z	87.859° E
6 mins	2026-05-20 05:07:16.564Z	271.003° WNW	2026-05-20 05:09:16.564Z	224.912° SW	41.593°	2026-05-20 05:13:16.564Z	113.821° SE
5 mins	2026-05-20 06:50:16.564Z	244.107° WSW	2026-05-20 06:52:16.564Z	204.779° SW	21.697°	2026-05-20 06:55:16.564Z	159.302° 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 DIADEME 1, 2674 on other resources

View DIADEME 1, 2674 on NASA - NSSDCA Website

View DIADEME 1, 2674 on Heavens-Above

View DIADEME 1, 2674 on Keep Track

View DIADEME 1, 2674 on Celestrak

View DIADEME 1, 2674 on Gunter's Space Page

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

DIADEME 1, 2674

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-05-19T07:33:43.428Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #11 in the year 1967 (1967-02-08 UTC)

DIADEME 1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out DIADEME 1, 2674 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago