ESSAIM-4 (28497)

COSPAR: 2004-049F | Alt Name: Essaim E12

Image
ESSAIM-4 Satellite Image
Additional Sources
Launch Details

Launch Date

December 18, 2004

Launch Site

FRGUI

Launch Pad

ELA3

Launch Vehicle

Ariane 5G+

Orbital Elements

NORAD ID

28497

International Designator

2004-049F

Epoch

Sat, 04 Jul 2026 03:49:14 GMT

Apogee

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Perigee

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Inclination

98.25°

Right Ascension

73.13°

Eccentricity

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Argument of Perigee

111.53°

Period

96.76 min

Mean Motion

14.88 rev/day

Latitude

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Longitude

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Altitude

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Velocity

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Polar Plot
3D Visualization
Basic Satellite Info

Name

ESSAIM-4

Alternative Name

Essaim E12

Type

Payload

Status

Unknown

Owner

CNES/DGA

Country

France

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 28497U 04049F   26185.15919984  .00001488  00000-0  16796-3 0  9998
2 28497  98.2509  73.1314 0000612 111.5284 248.5997 14.88166257161982

Source: Celestrak

Summary
ESSAIM-4, also known as Essaim E12, is a SIGINT (Signals Intelligence) satellite built on the Myriade bus configuration and manufactured by EADSB for CNES/DGA. It was launched on December 18, 2004, from ELA3 at FRGUI using an Ariane 5G+ launch vehicle. The satellite measures 0.6 meters in length and diameter with a span of 1 meter, has a dry mass of 114 kilograms, and weighed 119 kilograms at launch. It features a deployable solar array and batteries for power generation. ESSAIM-4 operates within a box plus pan shape design and is expected to have a lifetime of three years.
Physical Characteristics

Length

0.6

Diameter

0.6

Span

1

Dry Mass

114

Launch Mass

119

Shape

Box + Pan

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Essaim 4

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
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