ALPHASAT (39215)

COSPAR: 2013-038A | Alt Name: Inmarsat 4A F4

Image

Additional Sources

Launch Details

Launch Date

July 25, 2013

Launch Site

FRGUI

Launch Pad

ELA3

Launch Vehicle

Ariane 5ECA

Orbital Elements

NORAD ID

39215

International Designator

2013-038A

Epoch

Sat, 04 Jul 2026 05:27:02 GMT

Apogee

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Perigee

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Inclination

3.00°

Right Ascension

1.26°

Eccentricity

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Argument of Perigee

117.81°

Period

1436.11 min

Mean Motion

1.00 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

ALPHASAT

Alternative Name

Inmarsat 4A F4

Type

Payload

Status

Operational

Owner

INMRL/ESA

Country

United Kingdom

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 39215U 13038A   26185.22711071  .00000145  00000-0  00000-0 0  9998

2 39215   2.9989   1.2618 0002225 117.8141 269.8031  1.00270892 44197

Source: Celestrak

Summary

ALPHASAT (also known as Inmarsat 4A F4) is a communication satellite launched by INMRL/ESA on July 25, 2013, from ELA3 in Kourou using an Ariane 5ECA launch vehicle. The spacecraft, manufactured by ASTT and based on the AlphaBus configuration, has dimensions of 7.1 meters in length and a diameter of 2.5 meters with a span of 40 meters when its solar arrays are deployed. It carries a L-band payload for communication purposes and is powered by two deployable solar arrays along with batteries. ALPHASAT has a dry mass of 3,500 kilograms and was launched with a total mass of 6,650 kilograms. The satellite's designed lifetime is 15 years and it is primarily used for communication missions.

Physical Characteristics

Length

7.1

Diameter

2.5

Span

Dry Mass

3500

Launch Mass

6650

Shape

Box+2 pan+dish

Radar Cross Section

16.3096

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Alphasat

Purpose

Communication

Mission

Communication

Manufacturer

ASTT

Life Expectancy

15 years

Bus

AlphaBus

Configuration

Alphabus

Motor

S400

Equipment

L-band payload

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map

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Longitude

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