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Loading contentA prolific U.S. launch-vehicle family spanning six decades, from the Thor-derived Delta through the Delta II and the hydrogen-fueled Delta IV, retired in 2024.
| Vehicle | Country | First flight | Lift class | LEO payload | Status |
|---|---|---|---|---|---|
| Delta II | United States | 1989 | Medium-lift | — | Retired |
| Delta IV Heavy | United States | 2004 | Heavy-lift | 28,800 kg | Retired |
Facts on this topic will be cited from these primary and reference sources.
Atlas V, Delta IV, and Vulcan Centaur — manufacturer specifications and mission data.