The final half-decade of launches in the Thor/Delta family consisted of one Delta IV Heavy each year from 2020 through 2024. This followed the retirement of Delta II in 2018 and single-stick (non-Heavy) variants of the Delta IV in 2019. With the start of 2024, Vulcan Centaur took its first flight in time to maintain continuity of ULA's service in the heavy-lift launch vehicle market before the Delta IV Heavy program came to an end three months later on April 9, 2024.

Launch statistics

Launch sites

Launch outcomes

Launch history

2020 Flight No. Date / time (UTC) Rocket,Configuration Launch site Payload Payload mass Orbit Customer Launchoutcome 385 11 December 202001:09 Delta IV Heavy CCSFS, SLC-37B USA-311 (NROL-44) Classified GSO US NRO Reconnaissance satellite, likely an Orion satellite. Launch attempts on 29 August and 30 September were aborted due to problems with the Ground Service Equipment (GSE). The rocket finally lifted off on 11 December. 2021 Flight No. Date / time (UTC) Rocket,Configuration Launch site Payload Payload mass Orbit Customer Launchoutcome 386 26 April 2021 20:47 Delta IV Heavy VAFB, SLC-6 USA-314 (NROL-82) Classified LEO US NRO Reconnaissance satellite, likely a KH-11 Kennen satellite. 2022 Flight No. Date / time (UTC) Rocket,Configuration Launch site Payload Payload mass Orbit Customer Launchoutcome 387 24 September 202222:25:30 Delta IV Heavy VAFB, SLC-6 NROL-91 Classified LEO US NRO Reconnaissance satellite, likely a KH-11 Kennen satellite. Final Delta flight from Vandenberg. 2023 Flight No. Date / time (UTC) Rocket,Configuration Launch site Payload Payload mass Orbit Customer Launchoutcome 388 22 June 202309:18 Delta IV Heavy CCSFS, SLC-37B NROL-68 Classified GEO US NRO Reconnaissance satellite, likely an Orion satellite. 2024 Flight No. Date / time (UTC) Rocket,Configuration Launch site Payload Payload mass Orbit Customer Launchoutcome 389 9 April 202416:53 Delta IV Heavy CCSFS, SLC-37B NROL-70 Classified GEO US NRO Reconnaissance satellite, likely an Orion satellite. Final flight of the Delta rocket family.

See also

List of Atlas launches (2020–2029) List of Vulcan launches List of USA satellites List of NRO launches

References