in 1930 what name was not on the short-list of potential names for the planet pluto
"Zeus"
Pluto
Constance Lowell proposed "Zeus", then "Percival" and finally "Constance". These suggestions were disregarded.
wiki:11622559
Pluto [SEP] Name
The discovery made headlines around the globe. Lowell Observatory, which had the right to name the new object, received more than 1,000 suggestions from all over the world, ranging from Atlas to Zymal. Tombaugh urged Slipher to suggest a name for the new object quickly before someone else did. Constance Lowell proposed "Zeus", then "Percival" and finally "Constance". These suggestions were disregarded. The name Pluto, after the Roman god of the underworld, was proposed by Venetia Burney (1918–2009), an eleven-year-old schoolgirl in Oxford, England, who was interested in classical mythology. She suggested it in a conversation with her grandfather Falconer Madan, a former librarian at the University of Oxford's Bodleian Library, who passed the name to astronomy professor Herbert Hall Turner, who cabled it to colleagues in the United States.