SL-3 R/B (21689)

COSPAR: 1991-061B | Alt Name: Vostok-2M (N94) Stage 3

Image

Additional Sources

Launch Details

Launch Date

August 29, 1991

Launch Site

Tyuratam Missile and Space Complex

Launch Pad

LC31

Launch Vehicle

Vostok 8A92M

Orbital Elements

NORAD ID

21689

International Designator

1991-061B

Epoch

Fri, 03 Jul 2026 20:38:09 GMT

Apogee

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Perigee

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Inclination

99.45°

Right Ascension

37.71°

Eccentricity

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Argument of Perigee

36.88°

Period

102.69 min

Mean Motion

14.02 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-3 R/B

Alternative Name

Vostok-2M (N94) Stage 3

Type

Rocket Body

Status

Space Junk

Owner

RVSN

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 21689U 91061B   26184.85983142 -.00000049  00000-0 -66789-6 0  9991

2 21689  99.4484  37.7138 0026271  36.8811 323.4153 14.02298091782396

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

3.8

Diameter

2.6

Span

3.8

Dry Mass

1440

Launch Mass

1440

Shape

Cyl

Radar Cross Section

5.9697

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

8A92ME

Purpose

Unknown

Mission

Unknown

Manufacturer

PROG

Life Expectancy

Unknown

Bus

Blok-E

Configuration

Unknown

Motor

Unknown

Equipment

Unknown

Power System

Unknown

ADCS

Unknown

Transmitter Frequency

Unknown

Map

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