X1
C/1953 X1 Pajdusakova
BMW X1
C/2010 X1 Elenin
Fiat X1/9
Sharp X1
Bell X1
HMS X1
Geely Yuanjing X1
C/2023 X1 Leonard
Cray X1
C/1798 X1 Bouvard
C/1945 X1 du Toit
C/1975 X1 Sato
X1 (gruppo musicale)
222P/LINEAR
C/1927 X1 Skjellerup-Maristany
231P/LINEAR-NEAT
Fiat City Car
Grande Cometa del 1744
33P/Daniel
147P/Kushida-Muramatsu
6P/d'Arrest
69P/Taylor
18D/Perrine-Mrkos
24P/Schaumasse
45P/Honda-Mrkos-Pajdušáková