TITAN 4 R/B (21776)

COSPAR: 1991-076B | Alt Name: Titan 45K-8 Stage 2
DECAYED

Image
TITAN 4 R/B Satellite Image
Additional Sources
Launch Details

Launch Date

November 8, 1991

Launch Site

AFWTR

Launch Pad

SLC4E

Launch Vehicle

Titan 403A

Orbital Elements

NORAD ID

21776

International Designator

1991-076B

Decay Date

Unknown

Basic Satellite Info

Name

TITAN 4 R/B

Alternative Name

Titan 45K-8 Stage 2

Type

Rocket Body

Status

Space Junk

Owner

AFSSD2

Country

United States

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

9.9

Diameter

3.1

Span

9.9

Dry Mass

4500

Launch Mass

4500

Shape

Cyl

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

LR91AJ11A 45K-8

Purpose

Unknown

Mission

Unknown

Manufacturer

MMD

Life Expectancy

Unknown

Bus

Titan 4 Stage 2

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 24 May 2025

Space Brief 24 May 2025

Today's key space events include a milestone Falcon booster landing, advances in US military satellite operations, and a new missile defense initiative.

SpaceX Wins $2.29B Space Force LEO Comms Contract | KeepTrack Space Brief

SpaceX Wins $2.29B Space Force LEO Comms Contract | KeepTrack Space Brief

SpaceX awarded $2.29 billion to build Space Force's LEO communications backbone, integrating with SDA Transport layer satellites for military tactical data relay through space.

Falcon 9 B1067 Targets 36th Flight Record on Starlink 10-42 | KeepTrack Space Brief

Falcon 9 B1067 Targets 36th Flight Record on Starlink 10-42 | KeepTrack Space Brief

SpaceX Falcon 9 booster B1067 set for 36th flight Thursday with Starlink 10-42 mission from Cape Canaveral. Long March 10B debuts Friday in China.

The NASA Budget Proposal That Nobody Asked For (Again)

The NASA Budget Proposal That Nobody Asked For (Again)

The White House wants to cut NASA's science budget nearly in half for the second year running. Administrator Jared Isaacman says it's enough. Congress already rejected this exact idea once.

Space Brief 25 Oct 2025

Space Brief 25 Oct 2025

Today's brief covers significant growth forecasts for global defense satellite communications, the integration of hypersonic missiles, cyber authority expansion in the Army, and more pivotal military developments.

X Report 21 Apr 2025

X Report 21 Apr 2025

SpaceX launches its 32nd cargo mission to the ISS, and NRO marks a milestone with over 200 satellites deployed.

NordSpace Atlantic Spaceport Complex

NordSpace Atlantic Spaceport Complex

Canada's sovereign space access finally has a construction site. How NordSpace is building the Atlantic Spaceport Complex in Newfoundland - and what the scrubbed Taiga launch reveals about the path to orbit.

Space Brief 18 Dec 2025

Space Brief 18 Dec 2025

Today's updates cover Rocket Lab's launch for the U.S. Space Force, Digantara's major funding round, and discussions on national security in space.