SL-4 R/B (04525)

COSPAR: 1970-071B | Alt Name: Voskhod (N133) Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

September 8, 1970

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

04525

International Designator

1970-071B

Decay Date

9/14/1970

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N133) Blok-I

Type

Rocket Body

Status

Space Junk

Owner

RVSN

Country

USSR

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

6.7

Diameter

2.7

Span

6.7

Dry Mass

2350

Launch Mass

2350

Shape

Cyl

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11A57I

Purpose

Unknown

Mission

Unknown

Manufacturer

PROG

Life Expectancy

Unknown

Bus

Blok-I

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.

Space Brief 7 May 2025

Today's briefing focuses on key developments in military space activities, technological advancements, and strategic challenges faced by the U.S. in space dominance. Notably, the Space Force is expanding its missile warning capabilities, and significant funding discussions are underway.

China's Rocket Factory Finds a Second Gear

In 2024, China launched 68 orbital missions. In 2025, the number jumped to 97. In 2026, state media and Western analysts agree the target is 140 or more. Most of that growth is being driven by two state-backed mega-constellations, a half-dozen private launch companies hitting stride, and a deliberate national pivot toward commercial space. Beijing is no longer trying to catch SpaceX. It is trying to build an industrial base that outlasts one.

Space Brief 3 Aug 2025

Today's brief covers NASA's collaboration with India for a new Earth-tracking satellite, China's expansion of its satellite internet network, and a groundbreaking cosmic shield for solar cells. Also highlighted are EchoStar's ambitious satellite order and Roscosmos' recent diplomatic moves.

Space Brief 22 Dec 2025

Today's highlights include Rocket Lab's record year, setbacks in Japanese space endeavors, secure communication advancements in orbit, and more updates on martian expeditions.

X Report 29 Nov 2024

SpaceX advances Starship development while planning future replacements for Falcon and Dragon.

Space Brief 7 Dec 2025

Today's highlights include a record-breaking event at the International Space Station, significant funding for hypersonic missile production, and several key military developments impacting space strategy.

Iran Strikes UAE and Saudi Targets, Space Force Opens Tracking to Commercial Firms | KeepTrack Space Brief

Iran launches drones and missiles at UAE and Saudi targets. Space Force opens secretive tracking data to commercial firms. Falcon 9 breakup linked to lithium pollution in upper atmosphere.

Space Brief 17 Sep 2024

Today's Space Brief covers crucial satellite events including upcoming launches, military space developments, and exceptional celestial sightings.