18991 Tonivanov
[arz] 18991 Tonivanov (كويكب)
[ce] (18991) Tonivanov
[eo] 18991 Tonivanov
[fa] سیارک ۱۸۹۹۱
[fr] (18991) Tonivanov
[it] 18991 Tonivanov
[pl] (18991) Tonivanov
[pt] 18991 Tonivanov
[ro] 18991 Tonivanov
[tt] (18991) Tonivanov