TERRESTAR-1 (35496)

COSPAR: 2009-035A | Alt Name: Terrestar 1

Image
TERRESTAR-1 Satellite Image
Additional Sources
Launch Details

Launch Date

July 1, 2009

Launch Site

FRGUI

Launch Pad

ELA3

Launch Vehicle

Ariane 5ECA

Orbital Elements

NORAD ID

35496

International Designator

2009-035A

Epoch

Fri, 03 Jul 2026 16:49:42 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

5.19°

Right Ascension

48.79°

Eccentricity

Calculating...

Argument of Perigee

44.10°

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

TERRESTAR-1

Alternative Name

Terrestar 1

Type

Payload

Status

Operational

Owner

TERRE

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 35496U 09035A   26184.70118855 -.00000047  00000-0  00000-0 0  9992
2 35496   5.1858  48.7871 0002679  44.0972 330.2521  1.00272639 62308

Source: Celestrak

Summary
TERRESTAR-1, also known as Terrestar 1, is a communication (MSS) satellite owned by TERRE and operated for mobile satellite services. It was launched on July 1, 2009, from the ELA3 launch pad at the Guiana Space Center using an Ariane 5ECA launch vehicle. The satellite has dimensions of 7.6 meters in length, a diameter of 2.8 meters, and a span of 32.4 meters. It was manufactured by LOR (Lockheed Martin Commercial Space Systems) on the SSL-1300S configuration bus with an R-4D-11-164 motor. At launch, TERRESTAR-1 had a mass of 6910 kilograms and a dry mass of 3000 kilograms, powered by two deployable solar arrays and batteries. It is equipped with S-band transponders for its mission and has an expected lifetime of 15 years. The satellite's shape consists of a box with two panels and a dish, with a radar cross-section (RCS) of 17.2973 square meters.
Physical Characteristics

Length

7.6

Diameter

2.8

Span

32.4

Dry Mass

3000

Launch Mass

6910

Shape

Box + 2 Pan + Dish

Radar Cross Section

17.2973

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Terrestar 1

Purpose

Communication (MSS)

Mission

Communication (MSS)

Manufacturer

LOR

Life Expectancy

15 years

Bus

FS-1300O

Configuration

SSL-1300S

Motor

R-4D-11-164

Equipment

S-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.

SpaceX Preps First February Starlink Launch, Orbital Data Centers Gain Traction | KeepTrack X Report

SpaceX Preps First February Starlink Launch, Orbital Data Centers Gain Traction | KeepTrack X Report

SpaceX readies Starlink 17-32 launch of 25 satellites from Vandenberg. Orbital data center economics draw attention from Musk and Bezos. 9,614 Starlink sats on orbit.

X Report 9 Feb 2025

X Report 9 Feb 2025

SpaceX prepares for another Starlink launch while facing potential C-band spectrum challenges.

Boeing Ramps Up Missile-Tracking Sensor Production for Military Sats | KeepTrack Space Brief

Boeing Ramps Up Missile-Tracking Sensor Production for Military Sats | KeepTrack Space Brief

Boeing opens new facility to boost missile-tracking sensor production for military satellites. Tory Bruno joins Blue Origin for national security projects. 25 Starlink sats launched.

Space Brief 30 Jun 2025

Space Brief 30 Jun 2025

Today's highlights include SpaceX's record-breaking launches, Japan's final H-2A launch, and significant developments in satellite data policies impacting weather forecasting.

Space Brief 12 Jun 2025

Space Brief 12 Jun 2025

Today's Space Brief covers major developments including the public debut of Voyager Technologies, advancements in defense by Sierra Space, and Pentagon's mega-constellation challenges. Also featured are new software selections by the Space Force and legislative actions on acquisition pilots.

EUTELSAT 172B

EUTELSAT 172B

Europe's first high-power all-electric telecom satellite doesn't just sit above the Pacific - it got there on robotic arms and plasma thrusters, broke records doing it, and now keeps your airplane Wi-Fi running between LA and Tokyo.

X Report 21 Nov 2025

X Report 21 Nov 2025

SpaceX celebrates significant milestones with its 100th launch of the year, enhancing Starlink's coverage while preparing for an escalating Starship production cadence.

Space Brief 8 Dec 2025

Space Brief 8 Dec 2025

Today's edition covers SpaceX scrubbing and successfully launching Starlink satellites, AI innovations in spacecraft propulsion, and the impact of SPHERE's debris disk survey in discovering hidden asteroid belts.