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ESSAIM-1 (28494)
COSPAR: 2004-049C | Alt Name: Essaim W23
Image
Additional Sources
Launch Details
Launch Date
December 18, 2004
Launch Site
FRGUI
Launch Pad
ELA3
Launch Vehicle
Ariane 5G+
Orbital Elements
NORAD ID
28494
International Designator
2004-049C
Epoch
Sat, 04 Jul 2026 01:26:22 GMT
Apogee
Calculating...
Perigee
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Inclination
98.30°
Right Ascension
54.87°
Eccentricity
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Argument of Perigee
71.26°
Period
96.88 min
Mean Motion
14.86 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
ESSAIM-1
Alternative Name
Essaim W23
Type
Payload
Status
Unknown
Owner
CNES/DGA
Country
France
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 28494U 04049C 26185.05998319 .00001298 00000-0 15400-3 0 9993
2 28494 98.3016 54.8744 0001387 71.2594 288.8770 14.86339333160791
Source: Celestrak
Summary
ESSAIM-1, also known as Essaim W23, is an intelligence satellite launched on December 18, 2004, from ELA3 at the Guiana Space Center using the Ariane 5G+ launch vehicle. The spacecraft, manufactured by EADS-B and operated for SIGINT purposes by CNES/DGA, has a bus configuration of Myriade with dimensions of 0.6 meters in length and diameter and a span of 1 meter. It weighs approximately 120 kilograms at launch and has a dry mass of 115 kilograms. The satellite is powered by deployable solar arrays and batteries. ESSAIM-1's mission was designed to last for three years.
Physical Characteristics
Length
0.6
Diameter
0.6
Span
1
Dry Mass
115
Launch Mass
120
Shape
Box + Pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Essaim 1
Purpose
SIGINT
Mission
SIGINT
Manufacturer
EADSB
Life Expectancy
3 years
Bus
Myriade
Configuration
Myriade
Motor
Unknown
Equipment
Unknown
Power System
Deployable solar array, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
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