What does the cryptic crossword clue "Smallest of visible asteroids, shrinking (5)" mean?

The definition is "Smallest". The wordplay uses a hidden word. Hidden in "smallest of visibLE ASTeroids, shrinking" The answer is LEAST.

Smallest of visible asteroids, shrinking (5)

Times Cryptic #28880 | 9 Across | 2024-04-02 flower