IRIDIUM 57 (25273)

COSPAR: 1998-019B | Alt Name: Iridium 57

Image

Additional Sources

Launch Details

Launch Date

March 30, 1998

Launch Site

AFWTR

Launch Pad

SLC2W

Launch Vehicle

Delta 7920-10C

Orbital Elements

NORAD ID

25273

International Designator

1998-019B

Epoch

Sat, 04 Jul 2026 03:43:54 GMT

Apogee

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Perigee

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Inclination

86.40°

Right Ascension

345.06°

Eccentricity

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Argument of Perigee

91.75°

Period

100.27 min

Mean Motion

14.36 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

IRIDIUM 57

Alternative Name

Iridium 57

Type

Payload

Status

Non-operational

Owner

IRID

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 25273U 98019B   26185.15548829  .00000344  00000-0  11135-3 0  9995

2 25273  86.3972 345.0648 0002035  91.7484 268.3946 14.36191386479605

Source: Celestrak

Summary

IRIDIUM 57, also known as Iridium SV057, is a communication satellite operated by IRID that was launched on March 30, 1998, from the AFWTR launch site using the Delta 7920-10C launch vehicle. It has dimensions of 3.5 meters in length and 1 meter in diameter with a span of 5 meters. The satellite's dry mass is 556 kilograms and it had an initial launch mass of 662 kilograms. IRIDIUM 57 was manufactured by MOTO/LMMS under the LM-700A configuration and follows a Box + 2 Pan shape design with a bus type of LM700. The satellite is equipped with two deployable solar arrays and batteries for power, and its operational lifetime was expected to be around 8 years. It has an RCS (Reflective Coefficient Surface) value of 3.6574 but lacks specific details regarding its ADCS (Attitude Determination and Control System), motor, equipment configuration, transmitter frequencies, major events, material composition, related satellites, sources, and constellation name.

Physical Characteristics

Length

3.5

Diameter

Span

Dry Mass

556

Launch Mass

662

Shape

Box + 2 Pan

Radar Cross Section

3.6574

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Iridium SV057

Purpose

Communication

Mission

Communication

Manufacturer

MOTO/LMMS

Life Expectancy

8 years

Bus

LM700

Configuration

LM-700A

Motor

Equipment

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map

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Latitude

Longitude

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