NAVSTAR 16 (USA 47) (20302)

COSPAR: 1989-085A | Alt Name: GPS II-4

Image

Additional Sources

Launch Details

Launch Date

October 21, 1989

Launch Site

Cape Canaveral Space Force Station

Launch Pad

LC17A

Launch Vehicle

Delta 6925

Orbital Elements

NORAD ID

20302

International Designator

1989-085A

Epoch

Sat, 04 Jul 2026 04:33:50 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

53.98°

Right Ascension

182.96°

Eccentricity

Calculating...

Argument of Perigee

70.40°

Period

760.19 min

Mean Motion

1.89 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot

3D Visualization

Basic Satellite Info

Name

NAVSTAR 16 (USA 47)

Alternative Name

GPS II-4

Type

Payload

Status

Non-operational

Owner

AFSSD2

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 20302U 89085A   26185.19017010  .00000088  00000-0  00000-0 0  9994

2 20302  53.9752 182.9639 0008186  70.4042 291.6370  1.89426038258866

Source: Celestrak

Summary

NAVSTAR 16 (USA 47), also known as GPS II-4, is a satellite in the GPS constellation manufactured by RWISB and launched on October 21, 1989, from Cape Canaveral Air Force Station Launch Complex 17A using a Delta 6925 launch vehicle. The satellite has dimensions of 2.4 meters in length, 1.8 meters in diameter, and spans 5.3 meters with its solar arrays deployed. It weighs 776 kilograms at launch and is equipped with two deployable solar arrays for power generation alongside batteries. NAVSTAR 16 operates on a mission for navigation purposes and employs a 3-axis stabilized configuration to maintain orientation. The satellite's equipment includes GPS SVN 19 as its payload, and it uses Star 37F motors. It has an expected operational lifetime of 7.5 years and is owned by AFSSD2.

Physical Characteristics

Length

2.4

Diameter

1.8

Span

5.3

Dry Mass

776

Launch Mass

776

Shape

Box + 2 Pan

Radar Cross Section

1.9952

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

GPS SVN 19

Purpose

Navigation

Mission

Navigation

Manufacturer

RWISB

Life Expectancy

7.5 years

Bus

GPS II

Configuration

3-Axis stabilized

Motor

Star 37F

Equipment

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map

This tool will help you track the satellite's position and predict its upcoming passes over your location. Simply input the coordinates or click the geolocation button to get started.

Latitude

Longitude

Next Pass

Azimuth Elevation Time (Local)

Start Azimuth

Max Elevation

Stop Azimuth

Time Until

Pass Duration

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

A Tribute to Albert Einstein

Ask anyone on the street who the smartest person ever was, and most will say Albert Einstein. Exactly 71 years ago today, this genius departed from the world. Today, we examine Einstein's innumerable contributions to astronomy and how he shaped space history for years to come.

The Rocket That Refused to Sink

On April 18, 2014, a Falcon 9 first stage did something no orbital rocket had ever done before. It fired its engines on the way down, steered itself through the atmosphere using grid fins that did not yet exist, and touched the Atlantic Ocean softly enough to survive the impact. Nobody recovered it. The data was the whole point.

Space Brief 14 Dec 2025

Today's briefing covers Blue Origin's certification progress, a near-miss between a Chinese spacecraft and a Starlink satellite, SpaceX's latest Starlink launch and booster landing, potential IPO news from SpaceX, and advancements in Starlink integration with Tesla vehicles.

X Report 21 Feb 2025

SpaceX's Falcon 9 achieves another milestone with successful international launch; Elon Musk discusses the future of the ISS; SpaceX prepares for its 450th Falcon launch.

Space Brief 17 Mar 2025

Today's highlights include significant data release from NASA's Atmospheric Waves Experiment, SpaceX's dual launches of Crew-10 and Starlink satellites, and intriguing findings from the arctic ice studies.

Space Brief 18 Dec 2025

Today's updates cover Rocket Lab's launch for the U.S. Space Force, Digantara's major funding round, and discussions on national security in space.

X Report 8 Mar 2025

SpaceX faces setbacks with Starship Flight 8 amid debris fallout, achieves regulatory win for smartphone connectivity, and prepares for upcoming ISS missions.

Musk Denies SpaceX AI Phone Report; EchoStar Bankruptcy | KeepTrack X Report

SpaceX hits 77 Falcon 9 launches in 2026 as EchoStar subsidiaries file Chapter 11 and Musk disputes WSJ AI phone claims.