HEAO 2 (11101)

COSPAR: 1978-103A | Alt Name: Einstein Observatory
DECAYED

Image
HEAO 2 Satellite Image
Additional Sources
Launch Details

Launch Date

November 13, 1978

Launch Pad

LC36B

Launch Vehicle

Atlas SLV-3D Centaur

Orbital Elements

NORAD ID

11101

International Designator

1978-103A

Decay Date

3/25/1982

Basic Satellite Info

Name

HEAO 2

Alternative Name

Einstein Observatory

Type

Payload

Status

Decayed

Owner

MSFC

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Summary

Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.

Physical Characteristics

Length

5.8

Diameter

2.4

Span

6

Dry Mass

3130

Launch Mass

3130

Shape

Oct Cyl

Radar Cross Section

26.5101

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

HEAO B

Purpose

Unknown

Mission

Unknown

Manufacturer

TRW

Life Expectancy

Unknown

Bus

HEAO

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 Sep 2025

Space Brief 24 Sep 2025

Key highlights on China's reusable rocket developments, U.S. military's Tranche 1 satellite launch, Space Force's weapons acquisition strategies, and more.

SpaceX Wins $178.5M Space Force Contract, X Report 3 Apr 2026

SpaceX Wins $178.5M Space Force Contract, X Report 3 Apr 2026

SpaceX secured a $178.5M Space Force contract to launch missile-tracking satellites from 2027, backing the Missile Track Custody threat-tracking layer.

Trump Nominates Lt. Gen. Schiess as 3rd Space Force Chief | KeepTrack Space Brief

Trump Nominates Lt. Gen. Schiess as 3rd Space Force Chief | KeepTrack Space Brief

Lt. Gen. Doug Schiess nominated to lead Space Force, becoming the third Chief of Operations since the service's 2019 founding. Pentagon clears 8 firms for classified AI access.

Space Brief 4 Feb 2025

Space Brief 4 Feb 2025

Today's brief covers the expansion of the U.S. missile defense shield, a new contract for Viasat from the U.S. Space Force, and the Missile Defense Agency's call for innovative Iron Dome concepts.

Space Brief 27 Oct 2024

Space Brief 27 Oct 2024

Today's brief covers SpaceX's latest Starlink launch, updates on Crew-8's return, and preparations for the SLS Artemis II mission.

X Report 12 Jan 2025

X Report 12 Jan 2025

SpaceX concludes a wet dress rehearsal for Starship Flight 7, aiming for the largest rocket launch on January 15 after weather delays.

Space Force Eyes 1,000 Launches by 2031, New Site Required | KeepTrack Space Brief

Space Force Eyes 1,000 Launches by 2031, New Site Required | KeepTrack Space Brief

Space Force projects ~1,000 launches between FY2027–FY2031, averaging 200 annually. DAF study concludes new launch site is "probably" required to absorb cadence.

Space Brief 27 Apr 2025

Space Brief 27 Apr 2025

Today's highlights include SpaceX's dual Starlink launches, NASA's progress on the Dragonfly mission to Titan, and delays in Starlink's Indian market entry.