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Thor Delta E1 launch schedule & history | T-Minus Zero

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Thor Delta E1

Launch history and upcoming schedule for Thor Delta E1.

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Rocket

Thor Delta E1

Rocket profile

Family: Thor

Manufacturer: McDonnell Douglas

LL2 vehicle: Thor Delta E1

American orbital launch vehicle family with Thor first stage and a delta second stage.

Vehicle wiki

Recent launch media

Last 1

Thor Delta E1 | Isis 2

Mar 31, 1971, 6:57 PM PST

United States Air Force • Vandenberg SFB, CA, USA

Photo credit: NASA•License: Unknown•Single-use

At a glance

0 upcoming tracked

Total launches

LL2 total

Success rate

94%

16 success • 1 failure

Next launch

—

No upcoming launches

Last launch

Mar 31, 1971, 6:57 PM PST

In 20,159 days • Success

Launch cadence

108.4 days

Avg gap (last 25 launches)

Time TBD

—

No upcoming launches

Last 30 days

Launches

Last 90 days

Launches

Last 365 days

Launches

Record month

Rocket KPIs

LL2: Thor Delta E1

Manufacturer: McDonnell Douglas

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Maiden flight

1966-07-01

Reusable

Height

28.0 m

Diameter

2.4 m

LEO payload

540 kg

GTO payload

150 kg

Stages

4-4

Success streak

Consecutive launches

Landings

0/0

0 failed

Landing streak

Consecutive landings

Mission mix

Last 17

Top orbits

Elliptical Orbit4
Geosynchronous Orbit4
Heliocentric N/A3
Low Earth Orbit2
Lunar Orbit2
Sun-Synchronous Orbit2

Top mission types

Astrophysics8
Earth Science5
Communications4

Top payload types

No payload type data yet.

Crewed launches

Payloads

Across the sample window

Schedule volatility

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Tracks timing/status changes for up to the next 20 launches based on the last 120 days of updates.

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Upcoming launches

0 items

No upcoming Thor Delta E1 launches scheduled.

Launch history

17 items

Thor Delta E1 | Isis 2
United States Air Force - Thor Delta E1
Mar 31, 1971, 6:57 PM PST
Launch pad: Vandenberg SFB, CA, USA (CA)
Thor Delta E1 | IMP G
United States Air Force - Thor Delta E1
Jun 21, 1969, 1:47 AM GMT-7
Launch pad: Vandenberg SFB, CA, USA (CA)
Thor Delta E1 | ESSA 9
United States Air Force - Thor Delta E1
Feb 26, 1969, 2:47 AM GMT-5
Launch pad: Cape Canaveral SFS, FL, USA (FL)