NAVSTAR 25 (USA 80) (21930)

COSPAR: 1992-019A | Alt Name: GPS IIA-4

Image

Additional Sources

Launch Details

Launch Date

April 10, 1992

Launch Site

Cape Canaveral Space Force Station

Launch Pad

LC17B

Launch Vehicle

Delta 7925

Orbital Elements

NORAD ID

21930

International Designator

1992-019A

Epoch

Thu, 02 Jul 2026 00:12:59 GMT

Apogee

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Perigee

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Inclination

54.93°

Right Ascension

304.70°

Eccentricity

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Argument of Perigee

347.50°

Period

767.34 min

Mean Motion

1.88 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

NAVSTAR 25 (USA 80)

Alternative Name

GPS IIA-4

Type

Payload

Status

Non-operational

Owner

AFSSD2

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 21930U 92019A   26183.00901876 -.00000066  00000-0  00000-0 0  9990

2 21930  54.9265 304.6999 0029681 347.5042  64.9653  1.87661454241731

Source: Celestrak

Summary

NAVSTAR 25 (USA 80), also known as GPS IIA-4, is a US satellite with the NORAD Catalog ID of 21930 and OBJECT_ID of 1992-019A. Launched on April 10, 1992, from Launch Pad LC17B at AFETR using a Delta 7925 launch vehicle, it was manufactured by RWISB for navigation purposes. The satellite has dimensions of 2.4 meters in length, 1.8 meters in diameter, and spans 5.3 meters with its deployed solar arrays. It weighs 860 kilograms at launch and features a 3-Axis stabilized configuration. Its shape is described as Box + 2 Pan, and it uses two deployable solar arrays along with batteries for power. NAVSTAR 25's mission was to provide navigation services within the GPS constellation, and its expected lifetime was 7.5 years. The satellite’s propulsion motor is a Star 37XFP model.

Physical Characteristics

Length

2.4

Diameter

1.8

Span

5.3

Dry Mass

860

Launch Mass

860

Shape

Box + 2 Pan

Radar Cross Section

2.4978

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

GPS SVN 28

Purpose

Navigation

Mission

Navigation

Manufacturer

RWISB

Life Expectancy

7.5 years

Bus

GPS IIA

Configuration

3-Axis stabilized

Motor

Star 37XFP

Equipment

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map

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