FLOCK 4S-23 (47545)

COSPAR: 2021-006EF | Alt Name: Flock 4s-23
DECAYED

Image
FLOCK 4S-23 Satellite Image
Additional Sources
Launch Details

Launch Date

January 24, 2021

Launch Pad

LC40

Launch Vehicle

Falcon 9

Orbital Elements

NORAD ID

47545

International Designator

2021-006EF

Decay Date

12/4/2023

Basic Satellite Info

Name

FLOCK 4S-23

Alternative Name

Flock 4s-23

Type

Payload

Status

Decayed

Owner

PLAN

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Summary
The FLOCK 4S-23 satellite, also known as Flock 4s-23, is a 3U CubeSat designed and manufactured by PLAN in the United States. Launched on January 24, 2021, from LC40 at AFETR using a Falcon 9 launch vehicle, this satellite has dimensions of 0.3m x 0.1m x 0.3m and a dry mass of 5.7 kg. It is equipped with a PS0, PS1 or PS2 imaging payload named Dove 245d and powered by solar cells and batteries. The mission objective is technology demonstration. Its operational lifetime is estimated to be about 1 year in ISS orbit and 2-3 years in SSO (Sun-Synchronous Orbit).
Physical Characteristics

Length

0.3

Diameter

0.1

Span

0.3

Dry Mass

5.7

Launch Mass

5.7

Shape

Box+2 pan

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Dove 245d

Purpose

Technology

Mission

Technology

Manufacturer

PLAN

Life Expectancy

~ 1 year (ISS orbit); 2-3 years (SSO)

Bus

Cubesat 3U

Configuration

CubeSat (3U)

Motor

None (most); FEEP (#Flock-3p')

Equipment

PS0, PS1 or PS2 imaging payload

Power System

Solar cells, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

Who Owns the Most Satellites Orbiting Earth?

Who Owns the Most Satellites Orbiting Earth?

Uncover the top companies dominating the satellite industry. From SpaceX to One Web, learn who's leading in space assets. Full list inside.

X Report 4 Jul 2025

X Report 4 Jul 2025

SpaceX continues to make strides in satellite deployment with a successful launch. The European Space Agency's new satellite enhances global atmospheric forecasting, showcasing the expanding role of launches in improving environmental monitoring.

Space Force Activates Cyber Squadrons at Launch Sites | KeepTrack Space Brief

Space Force Activates Cyber Squadrons at Launch Sites | KeepTrack Space Brief

Space Force stands up 2 cyber defense squadrons at Cape Canaveral and Vandenberg to protect launch operations against adversary interference targeting pad networks and telemetry systems.

Kratos Wins $447M Space Force MEO Missile Tracking Deal | KeepTrack Space Brief

Kratos Wins $447M Space Force MEO Missile Tracking Deal | KeepTrack Space Brief

Kratos awarded $447 million Space Force contract for Resilient Missile Warning Tracking ground ops center in Medium Earth Orbit, shifting missile detection away from vulnerable GEO satellites.

Starship All 6 Engines Fire for 60 Seconds Before Flight 13 | KeepTrack X Report

Starship All 6 Engines Fire for 60 Seconds Before Flight 13 | KeepTrack X Report

SpaceX ignited all 6 Starship engines for a full minute at Starbase, while a Falcon 9 added 24 more Starlinks from Vandenberg on July 1.

Falcon 9 Lifts 11,000 lbs of ISS Cargo on NG-24 | KeepTrack X Report

Falcon 9 Lifts 11,000 lbs of ISS Cargo on NG-24 | KeepTrack X Report

SpaceX's Falcon 9 launches Northrop Grumman's Cygnus NG-24 to the ISS carrying 11,000 lbs of critical cargo this weekend.

Space Brief 17 Dec 2025

Space Brief 17 Dec 2025

Today's stories cover Rocket Lab's innovative DiskSat launch, Digantara's expansion to missile defense, and DARPA's satellite surveillance network expansion, among other updates in military and satellite technology.

Space Brief 9 Oct 2025

Space Brief 9 Oct 2025

Today's briefing covers key developments in defense budgets reshaping the space sector, significant Space Force contracts, and the latest news from the Chinese space station.