TDF 2 (20705)

COSPAR: 1990-063A | Alt Name: TDF 2

Image

Additional Sources

Launch Details

Launch Date

July 24, 1990

Launch Site

FRGUI

Launch Pad

ELA2

Launch Vehicle

Ariane 44L

Orbital Elements

NORAD ID

20705

International Designator

1990-063A

Epoch

Sat, 04 Jul 2026 04:28:28 GMT

Apogee

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Perigee

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Inclination

15.20°

Right Ascension

358.24°

Eccentricity

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Argument of Perigee

329.72°

Period

1460.28 min

Mean Motion

0.99 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

TDF 2

Alternative Name

TDF 2

Type

Payload

Status

Unknown

Owner

FTEL

Country

France

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 20705U 90063A   26185.18644341 -.00000197  00000-0  00000-0 0  9993

2 20705  15.2029 358.2421 0042976 329.7179 200.6149  0.98611126132738

Source: Celestrak

Summary

TDF 2 is a communication satellite with the NORAD catalog ID 20705 and object ID 1990-063A, manufactured by AESPC. It was launched on July 24, 1990, from the ELA2 launch pad at the Guiana Space Centre using an Ariane 44L rocket. The satellite has a bus configuration of Spacebus 300 and measures 6.2 meters in length, with a diameter of 2 meters and a span of 19.3 meters. It weighs 2,057 kilograms at launch and has a dry mass of 1,020 kilograms. TDF 2 is equipped with five (plus one spare) 230 W Ku-band transponders for communication purposes and utilizes two deployable solar arrays and batteries for power generation. The satellite's mission duration was planned for eight years.

Physical Characteristics

Length

6.2

Diameter

Span

19.3

Dry Mass

1020

Launch Mass

2057

Shape

Box + 2 Pan

Radar Cross Section

2.7503

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

TDF 2

Purpose

Communication

Mission

Communication

Manufacturer

AESPC

Life Expectancy

8 years

Bus

Spacebus 300

Configuration

Spacebus-300

Motor

S400

Equipment

5(+1) 230 W Ku-band transponders

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map

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Longitude

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