"my" variable $self masks earlier declaration in same scope at orbital2.pm line 38.
Global symbol "$self" requires explicit package name at orbital2.pm line 10.
Global symbol "$self" requires explicit package name at orbital2.pm line 12.
Global symbol "$self" requires explicit package name at orbital2.pm line 21.
Global symbol "$self" requires explicit package name at orbital2.pm line 22.
Global symbol "$self" requires explicit package name at orbital2.pm line 32.
Global symbol "$seconds" requires explicit package name at orbital2.pm line 38.
Global symbol "$self" requires explicit package name at orbital2.pm line 47.
Compilation failed in require.
BEGIN failed--compilation aborted.