FLOCK 1-22 (39558)

COSPAR: 1998-067EB | Alt Name: Flock 1-22
DECAYED

Image
FLOCK 1-22 Satellite Image
Additional Sources
Launch Details

Launch Date

November 20, 1998

Launch Pad

Pad 0A

Launch Vehicle

Antares 120

Orbital Elements

NORAD ID

39558

International Designator

1998-067EB

Decay Date

6/5/2014

Basic Satellite Info

Name

FLOCK 1-22

Alternative Name

Flock 1-22

Type

Payload

Status

Decayed

Owner

PLABS

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Summary
The satellite FLOCK 1-22 (also known as Dove 0728) is a CubeSat (3U) technology demonstration satellite owned by Planet Labs (PLABS). Launched on November 20, 1998, from the Mid-Atlantic Regional Spaceport Launch Pad 0A using an Antares 120 launch vehicle, it has a length of 0.3 meters and a diameter of 0.1 meters with a dry mass of 4.25 kilograms. It is equipped with imaging payloads (PS0, PS1, or PS2) for Earth observation, powered by solar cells and batteries. The satellite's shape is described as Box+2 pan, with an RCS value of 0.0929. Its operational lifetime varies between approximately one year in the International Space Station orbit and two to three years in sun-synchronous orbit (SSO).
Physical Characteristics

Length

0.3

Diameter

0.1

Span

0.3

Dry Mass

4.25

Launch Mass

4.25

Shape

Box+2 pan

Radar Cross Section

0.0929

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Dove 0728

Purpose

Technology

Mission

Technology

Manufacturer

PLABS

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.

Space Brief 20 May 2025

Space Brief 20 May 2025

Today's brief covers potential roles for commercial satellites in missile defense, SpaceX's new launch site plans at Vandenberg, and partnerships for space nuclear propulsion. Discover updates on military space projects and international defense agreements.

The Day Opportunity Changed Our View of Mars Forever

The Day Opportunity Changed Our View of Mars Forever

Twenty-one years ago, a golf cart-sized rover bounced to a stop inside a small crater on Mars, beginning one of the most remarkable chapters in space exploration history

China Launches VLEO Alliance With Sats Below 300km | KeepTrack Space Brief

China Launches VLEO Alliance With Sats Below 300km | KeepTrack Space Brief

China formalized a national VLEO industry alliance with multiple satellites sustaining operations below 300 kilometers altitude. Propulsion startups attracting investment.

Space Brief 4 Aug 2025

Space Brief 4 Aug 2025

Key developments in space today include significant satellite launches, advancements in space technology, and an exciting crewed suborbital flight. Highlights cover China's satellite internet progress, a promising innovation for solar cells, and recent SpaceX and Blue Origin activities.

X Report 18 Dec 2024

X Report 18 Dec 2024

SpaceX achieves significant milestones with Starship and multiple launch missions, while Starlink connectivity expands through T-Mobile's beta program.

Vietnam Licenses Starlink for 600K Terminals, Isaacman Plans Roscosmos Visit | KeepTrack Space Brief

Vietnam Licenses Starlink for 600K Terminals, Isaacman Plans Roscosmos Visit | KeepTrack Space Brief

Vietnam approves Starlink with up to 600,000 terminals and 4 gateway stations. SpaceX hits 600th Falcon 9 launch. NASA's Isaacman plans Roscosmos meeting and Soyuz visit.

Space Brief 8 Mar 2025

Space Brief 8 Mar 2025

Today's Space Brief covers the landing of the X-37B spaceplane after a 434-day mission, the postponement of SDA's satellite launch, and the fiery debris from SpaceX's Starship over The Bahamas.

X Report 30 Aug 2025

X Report 30 Aug 2025

SpaceX impresses with the successful launch of 24 Starlink satellites and shares stunning visuals from the recent Starship Flight 10, which demonstrated remarkable landing precision.