All of the following contain conjectured planets to bring planetary systems to completion.
“Tau Ceti system is the planetary system around Tau Ceti, located approximately 11.9 light-years...Tau Ceti system
“Alpha Centauri system is a system comprising of five planets and three stars, located 4.3...Alpha Centauri system
“Barnard's Star system is a small, conjectured planetary system around Barnard's Star. It is...Barnard's Star system
“12 Ophiuchi system is the conjectured planetary system of 12 Ophiuchi, located 31.8 light-years...12 Ophiuchi system
“61 Cygni system is a conjectured planetary system of the binary star system 61 Cygni, located...61 Cygni system
“18 Scorpii system is a conjectured planetary system located 45.7 light-years away in the...18 Scorpii system
“70 Ophiuchi system is a conjectured planetary system orbiting both stars of the binary system...70 Ophiuchi system