NAVSTAR 53 (USA 175) (28129)

COSPAR: 2003-058A | Alt Name: GPS IIR-10

Image

Additional Sources

Launch Details

Launch Date

December 21, 2003

Launch Site

Cape Canaveral Space Force Station

Launch Pad

SLC17A

Launch Vehicle

Delta 7925-9.5

Orbital Elements

NORAD ID

28129

International Designator

2003-058A

Epoch

Wed, 01 Jul 2026 13:55:10 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

55.04°

Right Ascension

22.73°

Eccentricity

Calculating...

Argument of Perigee

343.58°

Period

747.36 min

Mean Motion

1.93 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot

3D Visualization

Basic Satellite Info

Name

NAVSTAR 53 (USA 175)

Alternative Name

GPS IIR-10

Type

Payload

Status

Backup

Owner

AFSMC

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 28129U 03058A   26182.57997933 -.00000073  00000-0  00000+0 0  9999

2 28129  55.0356  22.7346 0001396 343.5788  16.4670  1.92678592164744

Source: Celestrak

Summary

NAVSTAR 53 (USA 175), also known as GPS IIR-10, is a navigation satellite operated by AFSMC and launched on December 21, 2003, from Cape Canaveral Air Force Station’s SLC17A pad using a Delta 7925-9.5 launch vehicle. The spacecraft has a configuration known as AS-4000 under the Series 4000 bus type and was manufactured by LMMS. It carries GPS SVN 47 payload for navigation purposes. The satellite measures 1.5 meters in length, 1.9 meters in diameter, with a span of 19.3 meters due to its solar arrays. With a dry mass of 910 kg and a launch mass of 1077 kg, it is equipped with two deployable solar arrays for power generation alongside batteries. Its shape consists of a box structure with two panels. NAVSTAR 53 has an expected operational lifetime of ten years and orbits under the US flag.

Physical Characteristics

Length

1.5

Diameter

1.9

Span

19.3

Dry Mass

910

Launch Mass

1077

Shape

Box + 2 Pan

Radar Cross Section

6.3095

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

GPS SVN 47

Purpose

Navigation

Mission

Navigation

Manufacturer

LMMS

Life Expectancy

10 years

Bus

Series 4000

Configuration

AS-4000

Motor

Star 37XFP

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.

Space Brief 28 Jul 2025

Today's highlights include SpaceX's rapid Starlink launches, insights into China's Mars sample return mission, and ULA's future launch plans. Also, a new Space Force general takes the reins of the U.S. missile defense program.

X Report 10 May 2025

SpaceX continues its rapid launch cadence by deploying 28 Starlink satellites while expanding its service with collaborations such as United Airlines and Entel in Chile.

X Report 6 Dec 2024

SpaceX achieves a milestone with its 350th successful mission, including a significant Starlink launch, while Starship advances in testing. Meanwhile, SpaceX boosts SiriusXM's satellite fleet and industry competitors make strides.

Space Brief 1 Sep 2025

Today's Space Brief covers the Space Force's AI integration, NASA's lunar nuclear reactor plans, ESA's Flight Ticket Initiative, Martian mantle revelations, and SpaceX's latest Starlink launch.

Starlink Installed on Presidential Air Force One | KeepTrack X Report

SpaceX Starlink connectivity equips Trump's $400M interim Air Force One as Falcon 9 prepares to orbit 24 more satellites on mission 17-28.

X Report 12 Apr 2025

Key developments include the launch of Starshield satellites for the NRO and updates on Starlink launches and NASA access concerns involving Elon Musk's team.

X Report 28 Mar 2025

SpaceX sees another successful Starlink launch and faces strategic contract discussions as NASA pivots to reliable Dragon missions.

LeoLabs Launches Delta Military SSA Platform | KeepTrack Space Brief

LeoLabs debuts Delta, a space monitoring tool designed for military operators to detect adversarial orbital activity beyond standard conjunction warnings.