STARLINK-3156 (49458)

COSPAR: 2021-104BC | Alt Name: Starlink 3156

Image
STARLINK-3156 Satellite Image
Additional Sources
Launch Details

Launch Date

November 13, 2021

Launch Pad

LC40

Launch Vehicle

Falcon 9

Orbital Elements

NORAD ID

49458

International Designator

2021-104BC

Epoch

Sat, 04 Jul 2026 02:45:08 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

53.16°

Right Ascension

56.27°

Eccentricity

Calculating...

Argument of Perigee

101.47°

Period

95.41 min

Mean Motion

15.09 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

STARLINK-3156

Alternative Name

Starlink 3156

Type

Payload

Status

Operational

Owner

SPXS

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 49458U 21104BC  26185.11467944  .00048876  00000-0  30371-2 0  9995
2 49458  53.1614  56.2739 0001291 101.4650 258.6487 15.09208392256354

Source: Celestrak

Summary
The Starlink-3156 satellite, also known as Starlink 3156, is part of SpaceX's Starlink constellation and was launched on November 13, 2021, from Launch Complex 40 at the Cape Canaveral Space Force Station using a Falcon 9 launch vehicle. It has dimensions including a length of 0.2 meters, diameter of 2.8 meters, and span of 9 meters. The satellite's dry mass is 270 kg, with a launch mass of 290 kg. Equipped with Ku/Ka-band payload and an optical inter-satellite link, it uses solar arrays and batteries for power. Its mission involves communication purposes and employs krypton ion thrusters as its propulsion system.

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

270

Launch Mass

290

Shape

Box + pan

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Starlink Group 4-1-51

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
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 Resumes Falcon 9 Launches After Investigating Upper Stage Anomaly

SpaceX Resumes Falcon 9 Launches After Investigating Upper Stage Anomaly

SpaceX successfully returns to flight with a Starlink mission, detailing the cause of the July 11 anomaly and implementing fixes to prevent future incidents.

Space Brief 7 Jul 2025

Space Brief 7 Jul 2025

Today's key topics include the halting of the U.S. Air Force's rocket landing pad plans, the Space Force's shift to a flexible satellite strategy, delays in Australia's Eris 1 rocket launch, and the controversial cut of satellite sea-ice data to climate scientists.

Space Brief 10 May 2025

Space Brief 10 May 2025

Today's brief covers Rocket Lab's Neutron being selected for military tests, Space Force's strategic updates, Germany's SAR satellite plans, and a significant NASA nomination.

Space Brief 18 Sep 2024

Space Brief 18 Sep 2024

Today's Space Brief covers Rocket Lab's IoT satellite launch, SpaceX's European Galileo satellites, FAA's fine on SpaceX, Polaris Dawn mission achievements, and more.

Space Brief 31 Oct 2024

Space Brief 31 Oct 2024

SpaceX achieves a new launch record with its Starlink mission, NASA's Perseverance rover captures eerie Martian winds, and Buzz Aldrin endorses Trump. Plus, discussions around space debris and military space tech agreements.

Starship V3 Debuts on Flight 12 May 20 | KeepTrack X Report

Starship V3 Debuts on Flight 12 May 20 | KeepTrack X Report

SpaceX's first Starship V3 launches May 20 on Flight 12, as Starlink's 10,354 active sats force a historic carrier alliance.

China Caps Record Year With 92 Orbital Launches, New Reusable Rocket Planned | KeepTrack Space Brief

China Caps Record Year With 92 Orbital Launches, New Reusable Rocket Planned | KeepTrack Space Brief

China hits record 92 orbital launches in 2025. Vandenberg opens new launch site for providers. Former ULA CEO Tory Bruno joins Blue Origin for national security projects.

X Report 25 Jun 2025

X Report 25 Jun 2025

SpaceX successfully launched the historic Axiom-4 mission to the ISS, marking a significant milestone in private space travel, while also expanding Starlink's reach into Vietnam's healthcare sector.