GALAXY 13 (HORIZONS-1) (27954)

COSPAR: 2003-044A | Alt Name: Galaxy 13

Image
GALAXY 13 (HORIZONS-1) Satellite Image
Additional Sources
Launch Details

Launch Date

October 1, 2003

Launch Site

SEAL

Launch Pad

KLA -

Launch Vehicle

Zenit-3SL

Orbital Elements

NORAD ID

27954

International Designator

2003-044A

Epoch

Sat, 04 Jul 2026 01:11:57 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

1.46°

Right Ascension

83.65°

Eccentricity

Calculating...

Argument of Perigee

16.68°

Period

1436.08 min

Mean Motion

1.00 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

GALAXY 13 (HORIZONS-1)

Alternative Name

Galaxy 13

Type

Payload

Status

Operational

Owner

PAN

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 27954U 03044A   26185.04997251  .00000144  00000-0  00000-0 0  9996
2 27954   1.4620  83.6474 0001713  16.6797  49.7047  1.00272934 46742

Source: Celestrak

Summary
GALAXY 13 (HORIZONS-1), also known as Galaxy 13, is a communication satellite owned by PAN and manufactured by BOES. It was launched on October 1, 2003, from the Sea Launch platform using a Zenit-3SL launch vehicle. The satellite has a box shape with two panels, measures 5.8 meters in length, 3.4 meters in diameter, and has a span of 26.2 meters. It was equipped with 24 C-band transponders and 24 Ku-band transponders for communication purposes and powered by two deployable solar arrays along with batteries. At launch, it had a mass of 4090 kg and a dry mass of 2000 kg, with an expected lifetime of 15 years. The satellite's bus type is HS-601HP, configured as BSS-601HP, and its primary purpose is communication services.
Physical Characteristics

Length

5.8

Diameter

3.4

Span

26.2

Dry Mass

2000

Launch Mass

4090

Shape

Box + 2 Pan

Radar Cross Section

25.4101

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Galaxy XIII/Horizons 1

Purpose

Communication

Mission

Communication

Manufacturer

BOES

Life Expectancy

15 years

Bus

HS-601HP

Configuration

BSS-601HP

Motor

R-4D-11-300

Equipment

24 C-band transpondes, 24 Ku-band transponders

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.
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 1 May 2025

Space Brief 1 May 2025

Today's space brief covers NASA's shift to private companies for astronaut rescue, EU's potential collaboration with SES for satellite services, and notable military contract allocations. Plus, a satellite spotlight on LEMUR-2-KADI.

Space Brief 17 Nov 2025

Space Brief 17 Nov 2025

Today's highlights include key advancements for the Dream Chaser, SpaceX's record launches, Moon mission crowding concerns, and updates in European space policy.

SpaceX and xAI Tapped for Pentagon's $100M Drone Contest | KeepTrack X Report

SpaceX and xAI Tapped for Pentagon's $100M Drone Contest | KeepTrack X Report

Pentagon selects SpaceX and xAI for $100M autonomous drone competition. Two Falcon 9 rockets launch Starlink sats from California and Florida. 11,215 total Starlink satellites launched.

Space Brief 28 Dec 2025

Space Brief 28 Dec 2025

Exploring the future of space with concerns on space debris, rapid growth in orbital data centers, and new developments at launch sites.

X Report 15 Nov 2024

X Report 15 Nov 2024

SpaceX preps for its sixth Starship test flight, moving the Super Heavy rocket to the pad. China's unveils a Starship-like reusable rocket concept, while Starlink expands with 24 new satellites launched.

X Report 8 Jan 2025

X Report 8 Jan 2025

SpaceX gears up for distinctive Starship tests and milestone Starlink deployments as the new year takes off.

US Military Likely Jamming Iran Satellite Comms | KeepTrack Space Brief

US Military Likely Jamming Iran Satellite Comms | KeepTrack Space Brief

US military praised for space operations against Iran assessed as jamming or spoofing satellite communications. Electronic warfare effects invisible to orbital tracking data.

SpaceX Accuses Amazon of Debris Violations at FCC | KeepTrack X Report

SpaceX Accuses Amazon of Debris Violations at FCC | KeepTrack X Report

SpaceX filed an FCC complaint against Amazon over orbital debris violations as Starship V3 gets a maiden voyage date and a $178.5M Space Force deal lands.