INSAT-4A (28911)

COSPAR: 2005-049A | Alt Name: Insat 4A

Image
INSAT-4A Satellite Image
Additional Sources
Launch Details

Launch Date

December 21, 2005

Launch Site

FRGUI

Launch Pad

ELA3

Launch Vehicle

Ariane 5GS

Orbital Elements

NORAD ID

28911

International Designator

2005-049A

Epoch

Fri, 03 Jul 2026 22:26:05 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

6.48°

Right Ascension

71.55°

Eccentricity

Calculating...

Argument of Perigee

122.06°

Period

1451.58 min

Mean Motion

0.99 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

INSAT-4A

Alternative Name

Insat 4A

Type

Payload

Status

Non-operational

Owner

ISRO

Country

India

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 28911U 05049A   26184.93478881 -.00000202  00000-0  00000-0 0  9993
2 28911   6.4799  71.5468 0005219 122.0561  53.5879  0.99202455 45599

Source: Celestrak

Summary
INSAT-4A is a communication satellite with the NORAD Catalog ID 28911 and OBJECT_ID 2005-049A. Launched on December 21, 2005, from the ELA3 pad at Kourou launch site in French Guiana by an Ariane 5GS vehicle, it was manufactured by ISAC for ISRO with a mission duration of 12 years. The satellite has dimensions of 2.8 meters length and 2 meters diameter, spans 15.4 meters when its solar arrays are deployed, and has a dry mass of 1425 kg. It weighs 3081 kg at launch. INSAT-4A uses the I-3K (I-3000) bus and is equipped with 12 Ku-band transponders and 12 C-band transponders for communication purposes, powered by two deployable solar arrays and batteries. The satellite's shape consists of a box with two panels and has an RCS value of 12.5892.
Physical Characteristics

Length

2.8

Diameter

2

Span

15.4

Dry Mass

1425

Launch Mass

3081

Shape

Box + 2 Pan

Radar Cross Section

12.5892

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Insat 4A

Purpose

Communication

Mission

Communication

Manufacturer

ISAC

Life Expectancy

12 years

Bus

I3K

Configuration

I-3K (I-3000) Bus

Motor

ISRO LAM

Equipment

12 Ku-band transponders, 12 C-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 Launches AST SpaceMobile Block 2 BlueBird Satellites | KeepTrack Space Brief

SpaceX Launches AST SpaceMobile Block 2 BlueBird Satellites | KeepTrack Space Brief

SpaceX launched three Block 2 BlueBird satellites for AST SpaceMobile from Cape Canaveral. Block 2 variants are larger with enhanced capacity compared to Block 1 units already in orbit.

X Report 10 Jun 2025

X Report 10 Jun 2025

Exciting advancements from SpaceX include the debut of a new Dragon capsule for Axiom Space, continued Starlink deployments, and significant shifts in U.S. rural broadband funding that could benefit Starlink.

Space Brief 18 Jun 2025

Space Brief 18 Jun 2025

Today's updates cover crucial developments in satellite licensing reforms, defense cybersecurity, and AI integration within government sectors.

Space Brief 30 Apr 2025

Space Brief 30 Apr 2025

Today's briefing covers a significant hypersonic missile launch by the U.S. Army, the declassification of spy satellite photos aiding demining efforts, and the deployment of cutting-edge research payloads to the ISS.

Space Brief 8 Nov 2025

Space Brief 8 Nov 2025

Today's Space Brief covers major developments in Pentagon procurement methods, strategic satellite intelligence advancements, and increasing interest in drone technology within the defense sector.

Space Brief 23 Apr 2025

Space Brief 23 Apr 2025

Today's brief highlights the US Space Force's new space conflict doctrine, Ukraine's search for Starlink alternatives, and updates on regional military activities affecting space dynamics.

Space Brief 27 Nov 2024

Space Brief 27 Nov 2024

Space highlights include a debut launch of ZhuQue-2E, Firefly's lunar lander timeline, semiconductor funding for satellites, and ISS debris avoidance.

X Report 29 Nov 2025

X Report 29 Nov 2025

SpaceX successfully launched the Transporter-15 rideshare mission, deploying 140 payloads including significant international contributions. Meanwhile, the company progresses with Booster 19 stacking after the recent Booster 18 anomaly.