BSAT-4A (42951)

COSPAR: 2017-059B | Alt Name: BSAT-4a

Image
BSAT-4A Satellite Image
Additional Sources
Launch Details

Launch Date

September 29, 2017

Launch Site

FRGUI

Launch Pad

ELA3

Launch Vehicle

Ariane 5ECA

Orbital Elements

NORAD ID

42951

International Designator

2017-059B

Epoch

Sat, 04 Jul 2026 05:51:22 GMT

Apogee

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Perigee

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Inclination

0.04°

Right Ascension

343.91°

Eccentricity

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Argument of Perigee

96.06°

Period

1436.12 min

Mean Motion

1.00 rev/day

Latitude

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Longitude

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Altitude

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Velocity

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Polar Plot
3D Visualization
Basic Satellite Info

Name

BSAT-4A

Alternative Name

BSAT-4a

Type

Payload

Status

Operational

Owner

BSAT

Country

Japan

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 42951U 17059B   26185.24401079 -.00000338  00000-0  00000-0 0  9997
2 42951   0.0350 343.9116 0003799  96.0559  39.9659  1.00270313 31978

Source: Celestrak

Summary
BSAT-4A, also known as BSAT-4a, is a communication satellite owned by BSAT and manufactured by SSL (Space Systems/Loral). Launched on September 29, 2017, from the Guiana Space Center's ELA3 pad using an Ariane 5ECA launch vehicle, this satellite uses the SSL-1300 bus configuration. With dimensions of 5.1 meters in length and a diameter of 2.7 meters, BSAT-4A has a span of 24.7 meters due to its two deployable solar arrays. It carries 24 Ku-band transponders for communication purposes and weighs approximately 3,520 kilograms at launch with a dry mass of 1,800 kilograms. Equipped with R-4D thrusters for maneuvering, the satellite's mission is expected to last up to 15 years.
Physical Characteristics

Length

5.1

Diameter

2.7

Span

24.7

Dry Mass

1800

Launch Mass

3520

Shape

Box + 2 panels

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

BSAT-4a

Purpose

Communication

Mission

Communication

Manufacturer

SSL

Life Expectancy

15 years

Bus

LS-1300

Configuration

SSL-1300

Motor

R-4D

Equipment

24 Ku-band transponders

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map
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