Atlas IIAS
Atlas IIAS was the highest-performance Atlas II configuration, adding four Castor IVA solid rocket boosters to the Atlas IIA and its stretched Centaur. Thirty vehicles flew successfully from Telstar 401 in December 1993 through NROL-1 in August 2004, serving commercial communications, solar science, weather, and U.S. national-security missions without a launch failure.
Identity
- Aliases
- Atlas IIAS-CentaurAtlas IIAS/CentaurSolid-augmented Atlas IIA
- Family Name
- Atlas II
- Full Name
- Atlas IIAS
- Reusability
- expendable
- Slug
- atlas-iias
- Status
- retired
- Type
- rocket
- Variant Name
- IIAS
Details
- Description
- Atlas IIAS was the highest-performance Atlas II configuration, adding four Castor IVA solid rocket boosters to the Atlas IIA and its stretched Centaur. Thirty vehicles flew successfully from Telstar 401 in December 1993 through NROL-1 in August 2004, serving commercial communications, solar science, weather, and U.S. national-security missions without a launch failure.
- Diameter M
- 3.05
- Engines
- Count
- 1
- Name
- RS-27 (two-chamber booster)
- Placement
- booster
- Count
- 1
- Name
- RS-56SA
- Placement
- core
- Count
- 4
- Name
- Castor IVA
- Placement
- booster
- Count
- 2
- Name
- RL10A-4
- Placement
- upper
- First Flight Year
- 1,993
- Height M
- 47.4
- Last Flight Year
- 2,004
- Liftoff Mass Kg
- 237,200
- Parent Vehicle Family Id
- nd7g9nw45pfjvzgw5s0bfsmmyn8ahy2s
- Payload Capacity Kg
- Gto
- 3,719
- Leo
- 7,360
- Stages Count
- 2
- Strap On Boosters Count
- 4
Links
Assets & Meta
- Creation Time
- 7/14/2026, 6:51:51 AM
- Updated Time
- 7/14/2026, 9:44:30 AM