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Atlas MA-9
; Last crewed Mercury-Atlas

Mercury-Atlas was a subprogram of Project Mercury^[1]^: 1 that included most of the flights and tests using the Atlas LV-3B launch vehicle. The Atlas was also used for one Mercury flight under the Big Joe subprogram.^[2]^: 207

The Mercury mission numbering system was: a two-letter designation marking the launch vehicle type, followed by a dash, then a number designating the flight/test number. The Atlas launch vehicles used for Project Mercury were given a two- or three-digit number followed by a "-D", indicating that they were the "D" version of the Atlas.

The missions flown in Mercury-Atlas were:

MA-1 using Atlas launch vehicle "50-D"^[2]^: 276
MA-2 using Atlas launch vehicle "67-D"^[2]^: 320
MA-3 using Atlas launch vehicle "100-D"^[2]^: 335
MA-4 using Atlas launch vehicle "88-D"^[2]^: 382
MA-5 using Atlas launch vehicle "93-D"^[2]^: 398
MA-6 using Atlas launch vehicle "109-D"^[2]^{: 412–413}
MA-7 using Atlas launch vehicle "107-D"^[2]^: 446
MA-8 using Atlas launch vehicle "113-D"^[2]^: 467
MA-9 using Atlas launch vehicle "130-D"^[2]^: 490

References

^ "Information Summaries: The Early Years - Mercury to Apollo-Soyuz" (PDF). NASA. September 1991. Archived (PDF) from the original on November 26, 2022. Retrieved May 31, 2023.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Swenson, Loyd S. Jr.; Grimwood, James M.; Alexander, Charles C. (1998). This New Ocean: A History of Project Mercury (PDF). NASA History Office. Archived (PDF) from the original on May 6, 2023. Retrieved May 31, 2023.