CZ-4B R/B (44531)

COSPAR: 2019-059D | Alt Name: CZ-4B Y39 Stage 3

Image
CZ-4B R/B Satellite Image
Additional Sources
Launch Details

Launch Date

September 12, 2019

Launch Site

TAISC

Launch Pad

LC9

Launch Vehicle

Chang Zheng 4B

Orbital Elements

NORAD ID

44531

International Designator

2019-059D

Epoch

Fri, 03 Jul 2026 19:31:15 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

98.71°

Right Ascension

219.49°

Eccentricity

Calculating...

Argument of Perigee

181.71°

Period

95.08 min

Mean Motion

15.15 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

CZ-4B R/B

Alternative Name

CZ-4B Y39 Stage 3

Type

Rocket Body

Status

Space Junk

Owner

CNSA

Country

China

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 44531U 19059D   26184.81337876  .00005529  00000-0  24402-3 0  9991
2 44531  98.7093 219.4943 0133759 181.7110 178.3679 15.14525085372250

Source: Celestrak

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

6.9

Diameter

2.9

Span

6.9

Dry Mass

1000

Launch Mass

1000

Shape

Cyl

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

CZ-4B Stage 3

Purpose

Unknown

Mission

Unknown

Manufacturer

SAST

Life Expectancy

Unknown

Bus

CZ-4 Stage 3

Configuration

Unknown

Motor

Unknown

Equipment

Unknown

Power System

Unknown

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.

X Report 21 May 2025

X Report 21 May 2025

SpaceX successfully launched 23 Starlink satellites using a new Falcon 9 rocket, marking a significant milestone for the company as it expands its satellite internet constellation.

Space Force Picks Boeing 702MP for MUOS Follow-On | KeepTrack Space Brief

Space Force Picks Boeing 702MP for MUOS Follow-On | KeepTrack Space Brief

U.S. Space Force selects Boeing's 702MP spacecraft for next-generation MUOS satellites. Rocket Lab delivers Synspective's 10th StriX radar satellite. Track both missions.

Neil Gehrels Swift Observatory

Neil Gehrels Swift Observatory

Designed for a two-year mission to catch gamma-ray bursts in the act, Swift is now 21 years old, slowly falling out of the sky, and the subject of an unprecedented private rescue mission. Nobody planned for it to be this hard to let go.

X Report 17 Dec 2025

X Report 17 Dec 2025

SpaceX prepares for a busy launch schedule with key upgrades at Starbase and notable Starlink missions. Recent close approaches in orbit underscore the complexities of satellite operations.

Suborbital Tourism Scorecard 2026, the Edge of Space Goes Quiet

Suborbital Tourism Scorecard 2026, the Edge of Space Goes Quiet

Twenty-two years after SpaceShipOne, the two companies that defined suborbital tourism are both sitting on the ground. Blue Origin parked New Shepard in January, Virgin Galactic has not flown a customer since 2024, and the math behind the whole business is finally getting an honest look.

X Report 24 Aug 2025

X Report 24 Aug 2025

SpaceX successfully launched its CRS-33 Dragon cargo mission to the ISS, while preparations for the upcoming Starship Flight 10 continue, highlighting significant advancements in both cargo operations and test flight reliability.

SpaceX to Launch GPS Satellite After Mission Reassigned From ULA | KeepTrack X Report

SpaceX to Launch GPS Satellite After Mission Reassigned From ULA | KeepTrack X Report

SpaceX set to launch GPS 3-9 for Space Force after strategic switch from ULA's Vulcan to Falcon 9. 25 Starlink satellites deployed to polar orbit. Musk explains SpaceX exponential growth trajectory.

Space Brief 21 Sep 2025

Space Brief 21 Sep 2025

Today's Space Brief covers a significant signals intelligence launch, a record-breaking satellite deployment in China, a glimpse into the newest stealth drone, a potential delay for NASA's lunar lander, and more exciting updates from satellite world.