Simplify the following text for a Grade 10 native English-speaking person.
Original: ' is the provisional designation of an unconfirmed object seen orbiting Saturn within the inner strand of the F ring on June 21 , 2004 .
Simplified: ' is the designation of an object that astronomers do not know for sure if it exists seen orbiting Saturn within the closer part of the F ring on 21 June , 2004 .