FLOCK 1-28 (39566)

COSPAR: 1998-067EK | Alt Name: UAP-SAT
DECAYED

Image
FLOCK 1-28 Satellite Image
Additional Sources
Launch Details

Launch Date

November 20, 1998

Launch Pad

Pad 0A

Launch Vehicle

Antares 120

Orbital Elements

NORAD ID

39566

International Designator

1998-067EK

Decay Date

6/3/2014

Basic Satellite Info

Name

FLOCK 1-28

Alternative Name

UAP-SAT

Type

Payload

Status

Decayed

Owner

UAP

Country

Peru

Constellation

N/A

Related Satellites

Major Events

N/A

Summary
FLOCK 1-28 is a CubeSat (3U) satellite with an object ID of 1998-067EK and NORAD catalog ID of 39566, manufactured by UAP for technology purposes. Launched on November 20, 1998, from the TYMSC launch site using the Antares 120 launch vehicle, it has dimensions of 0.1 meters in length, diameter, and span. The satellite weighs 1 kilogram at launch and features solar cells and batteries for power generation. It is equipped with a PS0, PS1, or PS2 imaging payload and operates in a box shape with a radar cross-section (RCS) of 0.0568 square meters. Its lifetime varies from about 1 year in an ISS orbit to 2-3 years in Sun-Synchronous Orbit (SSO). The satellite's owner is UAP, which also specifies its payload as UAP-SAT.
Physical Characteristics

Length

0.1

Diameter

0.1

Span

0.1

Dry Mass

1

Launch Mass

1

Shape

Box

Radar Cross Section

0.0568

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

UAP-SAT

Purpose

Technology

Mission

Technology

Manufacturer

UAP

Life Expectancy

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

Bus

Cubesat 1U

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.

SpaceX Eyes $60B Cursor AI Acquisition Ahead of IPO | KeepTrack X Report

SpaceX Eyes $60B Cursor AI Acquisition Ahead of IPO | KeepTrack X Report

SpaceX secured a $60B option to acquire Cursor AI while launching its 40th Falcon 9 mission of 2026, deploying 24 more Starlink satellites from Vandenberg.

China Opens 2026 With Yaogan and Guowang Satellite Launches | KeepTrack Space Brief

China Opens 2026 With Yaogan and Guowang Satellite Launches | KeepTrack Space Brief

China launches Yaogan spacecraft into unusual orbit and Guowang constellation satellites to start 2026. NASA and DOE plan lunar nuclear reactor by 2030. Space Force switches GPS launch rocket.

Space Brief 14 Nov 2025

Space Brief 14 Nov 2025

Today's brief covers Firefly's acquisition, military tracking from the moon, France's boost in military space funding, and more.

Starship Flight 12 Targets May 19 with Redesigned Ship | KeepTrack X Report

Starship Flight 12 Targets May 19 with Redesigned Ship | KeepTrack X Report

SpaceX targets May 19 for Starship Flight 12 debut, while CRS-34 delivers 6,500 lbs of cargo to ISS aboard a Falcon 9.

China Plans First One-Year Human Spaceflight Mission | KeepTrack Space Brief

China Plans First One-Year Human Spaceflight Mission | KeepTrack Space Brief

China confirms first one-year human spaceflight and Pakistani astronaut for Tiangong. Air Force develops X-68A missile-launching drone. Poland unveils $51B defense spending plan.

Space Brief 18 Jul 2025

Space Brief 18 Jul 2025

Today's highlights include Space Force prioritizing military missions, testing new GPS satellite software, and international defense collaborations impacting space assets.

Artemis 2 Crew Reaches Moon, NASA Cuts Budget 25% | KeepTrack Space Brief

Artemis 2 Crew Reaches Moon, NASA Cuts Budget 25% | KeepTrack Space Brief

Artemis 2's four astronauts entered lunar sphere of influence April 6, first crewed arrival since Apollo 17. NASA simultaneously proposed 25% budget cut for FY2027.

X Report 22 Dec 2024

X Report 22 Dec 2024

SpaceX successfully launches two rideshare missions to mid-inclination orbits, expanding their satellite deployment capabilities.