STARLINK-5991 (56331)

COSPAR: 2023-058Q | Alt Name: Starlink 5991

Image
STARLINK-5991 Satellite Image
Additional Sources
Launch Details

Launch Date

April 27, 2023

Launch Site

AFWTR

Launch Pad

SLC4E

Launch Vehicle

Falcon 9

Orbital Elements

NORAD ID

56331

International Designator

2023-058Q

Epoch

Sun, 19 Jul 2026 11:55:01 GMT

Apogee

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Perigee

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Inclination

97.28°

Right Ascension

197.73°

Eccentricity

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Argument of Perigee

89.89°

Period

95.64 min

Mean Motion

15.06 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

STARLINK-5991

Alternative Name

Starlink 5991

Type

Payload

Status

Operational

Owner

SPXS

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 56331U 23058Q   26200.49654477 -.00000073  00000+0 -11334-5 0  9990
2 56331  97.2823 197.7267 0002056  89.8894 270.2569 15.05655724177959

Source: Celestrak

Summary
STARLINK-5991 is a communication satellite under the Starlink constellation, launched on April 27, 2023, from AFWTR SLC4E using a Falcon 9 launch vehicle. The spacecraft measures 0.2 meters in length with a diameter of 2.8 meters and spans 9 meters when fully deployed. It has a dry mass of 260 kg and a launch mass of 300 kg. Equipped with Ku/Ka-band payload and optical inter-satellite link, it uses solar arrays and batteries for power supply and krypton ion thrusters for propulsion. The satellite's shape is described as "Box + pan" and it operates under the ownership of SPXS for communication purposes.

Starlink is a satellite constellation developed by SpaceX with the aim of providing global broadband internet coverage. Thousands of small satellites are deployed in low Earth orbit (LEO), enabling high-speed internet access even in remote areas. However, the rapid increase in satellites raises concerns about space debris and the potential for collisions, which can lead to further debris creation and endanger other spacecraft. Additionally, the sheer number of Starlink satellites can affect astronomical observations by increasing light pollution. Proper deorbiting plans and international coordination are essential to mitigate these challenges and ensure long-term sustainability in space.
Physical Characteristics

Length

0.2

Diameter

2.8

Span

9

Dry Mass

260

Launch Mass

300

Shape

Box + pan

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Starlink Group 3-5-15

Purpose

Communication

Mission

Communication

Manufacturer

SPXS

Life Expectancy

Unknown

Bus

Starlink

Configuration

Unknown

Motor

Krypton ion thrusters

Equipment

Ku/Ka-band payload, optical inter-satellite link

Power System

Solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map
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