SL-8 R/B (10521)

COSPAR: 1977-119B | Alt Name: Kosmos-3M 46-305 Stage 2

Image

Additional Sources

Launch Details

Launch Date

December 16, 1977

Launch Site

PLMSC

Launch Pad

LC132/1

Launch Vehicle

Kosmos 11K65M

Orbital Elements

NORAD ID

10521

International Designator

1977-119B

Epoch

Fri, 03 Jul 2026 23:18:38 GMT

Apogee

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Perigee

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Inclination

74.03°

Right Ascension

267.67°

Eccentricity

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Argument of Perigee

198.31°

Period

99.83 min

Mean Motion

14.42 rev/day

Latitude

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Longitude

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Altitude

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Velocity

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Polar Plot

3D Visualization

Basic Satellite Info

Name

SL-8 R/B

Alternative Name

Kosmos-3M 46-305 Stage 2

Type

Rocket Body

Status

Space Junk

Owner

RVSN

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 10521U 77119B   26184.97128145  .00000262  00000-0  86982-4 0  9999

2 10521  74.0269 267.6726 0020468 198.3056 161.7366 14.42455176547888

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

4.2

Diameter

2.4

Span

4.2

Dry Mass

1434

Launch Mass

1434

Shape

Cyl

Radar Cross Section

4.0593

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

S3M

Purpose

Unknown

Mission

Unknown

Manufacturer

OAZ

Life Expectancy

Unknown

Bus

Configuration

Unknown

Motor

Unknown

Equipment

Unknown

Power System

Unknown

ADCS

Unknown

Transmitter Frequency

Unknown

Map

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