She’s more powerful than Oprah Winfrey, J.K. Rowling and dozens of bankers and chief executive officers. She’s not quite as powerful as Katie Couric, Margaret Thatcher or Hillary Rodman Clinton.

She’s U.S. Sen. Olympia Snowe, and she’s No. 58 on a list of the World’s Most Powerful Women.

Compiled by Forbes Magazine, the first ever listing rates women from business leaders to queens to writers of popular fiction.

“I am honored that Forbes Magazine would include me in such an accomplished group in their listing of the world’s most powerful women,” Snowe said in a press release. She could not be reached for further comment Tuesday night.

At Forbes, makers of the list say they created a power scorecard to rate the women.

For each candidate, Forbes came up with a numerical weight defined by the woman’s title and resume.

On the list, released Tuesday, Snowe was joined by Senate colleagues Clinton, Elizabeth Dole and Dianne Feinstein. Clinton came in at No. 5, Dole at No. 30 and Feinstein at No. 50.

The Forbes Web site did not reveal exactly what factors landed Snowe on the list. The senator said she is happy to see the world’s most influential women being recognized for their work.

“For 25 years, I have proudly represented the people of Maine in the U.S. Congress while advocating for greater involvement of women in public service,” Snowe said in the press statement.

National security adviser Condoleezza Rice was selected as the most powerful woman in the world. First lady Laura Bush was No. 4.

The entire list is at www.forbes.com.