KZ-1A R/B (49339)

COSPAR: 2021-097B | Alt Name: KZ-1A Y5 Stage 4
DECAYED

Image
KZ-1A R/B Satellite Image
Additional Sources
Launch Details

Launch Date

October 27, 2021

Launch Site

JSC

Launch Pad

LC43/95

Launch Vehicle

Kuaizhou-1A

Orbital Elements

NORAD ID

49339

International Designator

2021-097B

Decay Date

10/30/2021

Basic Satellite Info

Name

KZ-1A R/B

Alternative Name

KZ-1A Y5 Stage 4

Type

Rocket Body

Status

Space Junk

Owner

EXPACE

Country

China

Constellation

N/A

Related Satellites

Major Events

N/A

Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics

Length

1

Diameter

0.5

Span

1

Dry Mass

50

Launch Mass

50

Shape

Cyl

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

KZ-1A Stage 4

Purpose

Unknown

Mission

Unknown

Manufacturer

CASIC

Life Expectancy

Unknown

Bus

Unknown

Configuration

Unknown

Motor

Unknown

Equipment

Unknown

Power System

Unknown

ADCS

Unknown

Transmitter Frequency

Unknown

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

X Report 16 Dec 2025

X Report 16 Dec 2025

SpaceX successfully launched its 100th Falcon 9 flight, deploying 29 Starlink satellites, while NASA plans to test SpaceX’s Starshield. Additionally, SpaceX engages in social media commentary regarding American Airlines' interest in Amazon's Starlink rival.

Space Brief 17 May 2025

Space Brief 17 May 2025

Today's brief covers SES's satellite orchestration, SpaceX's defense role, cyber scorecards in DoD, and more.

China's Long March 10C Nails First Booster Recovery | KeepTrack Space Brief

China's Long March 10C Nails First Booster Recovery | KeepTrack Space Brief

China successfully recovered a Long March 10C first stage booster, positioning the methalox rocket as its primary commercial launcher. Reusable boosters reshape Beijing's LEO constellation strategy.

Starlink Installed on Presidential Air Force One | KeepTrack X Report

Starlink Installed on Presidential Air Force One | KeepTrack X Report

SpaceX Starlink connectivity equips Trump's $400M interim Air Force One as Falcon 9 prepares to orbit 24 more satellites on mission 17-28.

Space Brief 7 Apr 2025

Space Brief 7 Apr 2025

Today's highlights include new ESA Euclid data, upcoming Blue Origin flight, and multiple Starlink launches, delivering fresh satellite tracking opportunities.

Northrop Grumman Books $71M Charge on Vulcan Booster Anomaly | KeepTrack Space Brief

Northrop Grumman Books $71M Charge on Vulcan Booster Anomaly | KeepTrack Space Brief

Northrop Grumman takes $71M charge over Vulcan solid rocket booster anomaly, grounding ULA's vehicle. Vulcan manifest timelines now in holding pattern pending resolution.

Falcon 9 Booster Hits Record 35th Flight | KeepTrack X Report

Falcon 9 Booster Hits Record 35th Flight | KeepTrack X Report

A Falcon 9 booster sets a reusability record on its 35th flight during the Starlink 10-35 mission, the constellation's 53rd dedicated launch.

X Report 2 Mar 2025

X Report 2 Mar 2025

Starship receives FAA approval for its next test flight, while SpaceX prepares to launch more Starlink satellites amidst reaching 5 million subscribers.