Of the 24 astronauts that NASA claim they sent to the Moon, and returned safely to Earth, only 11 of them remain at the end of 2020. The other 13 having passed on are:-
Jack Swigert (Apollo 13), Born 30 Aug 1931, Died 27 Dec 1982. Roland Evans (Apollo 17), Born 10 Nov 1933, Died 7 April 1990. James Irwin (Apollo 15), Born 17 Mar 1930, Died 8 Aug 1991. Stuart Roosa (Apollo 15), Born 16 Aug 1933, Died 12 Dec 1994. Alan Shepard (Apollo 14), Born 18 Nov 1923, Died 21 Jul 1998. Pete Conrad (Apollo 12), Born 2 Jun 1930, Died 8 Jul 1999. Neil Armstrong (Apollo 11), Born 5 Aug 1930, Died 25 Aug 2012. Edgar Mitchell (Apollo 14), Born 17 Sep 1930, Died 4 Feb 2016. Richard Gordon (Apollo 12), Born 5 Oct 1929, Died 6 Nov 2017. Gene Cernan (Apollo 10/17), Born 14 Mar 1934, Died 16 Jan 2017. John Young (Apollo 10/16), Born 24 Sep 1930, Died 5 Jan 2018. Alan Bean (Apollo 12), Born 15 Mar 1932, Died 26 May 2018. Al Worden (Apollo 15), Born 7 Feb 1932, Died 18 Mar 2020.
The remaining 11 astronauts are:- Frank Borman (Apollo 8). James Lovell (Apollo 8/13). William Anders (Apollo 8). Thomas Stafford (Apollo 10). Buzz Aldrin (Apollo 11). Michael Collins (Apollo 11). Fred Haise (Apollo 13). Dave Scott (Apollo 15). Ken Mattingley (Apollo 16). Chales Duke (Apollo 16). and Harrison Schmitt (Apollo 17).
Frank Borman born 14 Mar 1928, is now the oldest at 92, whilst Ken Mattingley born 17 Mar 1936 is the youngest at 84. We can therefore expect those 11 to pass away sometime within the next 5 years.