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ESSAIM-2, 28495

Orbit data source: Space-Track

ESSAIM-2, 28495 is a French payload satellite in SSO that was launched on Sat, 18 Dec 2004 UTC via an ARIANE 5G+ launch vehicle from the French Guiana (FRGUI). 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/28495?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/28495?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

28495, 2004-049D

Orbit

SSO

Country

Related business

National Center for Space Studies, Paris (FR)

Manufacturer

EADS/Bremen

Mission

Defense Sigint

Bus & Motor

MYRIADE, Unknown motor

Mass

119 kg wet, 114 kg dry

Launch date (UTC)

2004-12-18 (22 years ago)

Launch vehicle

ARIANE 5G+

Launch site

French Guiana (FRGUI)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 2.5 m

Radar Cross Section

0.607 m², Large (>1 m²)

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

TLE from 2 days ago

0 ESSAIM-2
1 28495U 04049D   26171.30689506  .00001139  00000-0  12120-3 0  9992
2 28495  98.2273  78.4639 0002718  93.8292 266.3235 14.91053309161009

Epoch: 2026-06-20T07:21Z

TLE epoch observation values (Epoch: 2026-06-20T07:21:55.733Z)

Latitude

-0.00008°

Longitude

59.45829°

Altitude

597.798 km

Speed

7.561 km/s

True Right ascension

05h 13m 51s

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

23:07:53

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

593.585 km

Perigee altitude

589.797 km

Semi-major axis

6,969.828 km

Eccentricity

0.00027

Inclination

98.2273°

RAAN

78.4639°

Arg. of periapsis

93.8292°

True anomaly

266.29242°

Mean anomaly

266.3235°

Eccentric anomaly

266.30796°

Mean motion

3.73001 °/min

Orbital period

96.51 mins

BSTAR

0.0001212

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Other satellites on launch #49 in the year 2004 (2004-12-18 UTC)

HELIOS 2A DEB, 50801 (Decayed)

HELIOS 2A DEB, 50797 (Decayed)

HELIOS 2A DEB, 51447 (Decayed)

HELIOS 2A DEB, 50799 (Decayed)

HELIOS 2A DEB, 50798 (Decayed)

HELIOS 2A DEB, 50796 (Decayed)

HELIOS 2A DEB, 50800 (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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ESSAIM-2 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.
7 mins	2026-06-22 17:28:36.064Z	145.024° SSE	2026-06-22 17:31:36.064Z	87.898° E	37.079°	2026-06-22 17:35:36.064Z	359.116° N
6 mins	2026-06-23 06:48:36.064Z	10.771° NNE	2026-06-23 06:51:36.064Z	214.222° SW	43.813°	2026-06-23 06:54:36.064Z	196.713° 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 ESSAIM-2, 28495 on other resources

View ESSAIM-2, 28495 on NASA - NSSDCA Website

View ESSAIM-2, 28495 on Heavens-Above

View ESSAIM-2, 28495 on Keep Track

View ESSAIM-2, 28495 on Celestrak

View ESSAIM-2, 28495 on Gunter's Space Page

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

ESSAIM-2, 28495

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: 2026-06-20T07:21:55.733Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #49 in the year 2004 (2004-12-18 UTC)

ESSAIM-2 Visibility forecast

Co-orbital & Co-planar RSOs

Check out ESSAIM-2, 28495 on other resources

Documentation

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