An asteroid, until recently simply, or not so simply, known as "1999 RC221," has been renamed "21775 Tsiganis" after Aristotle University astronomer Kleomenis Tsiganis.

As minor planet discoveries are confirmed, they are given a permanent number by the International Astronomic Union (IAU) Minor Planet Center, and the people who discovered them can then submit name proposals, following the IAU's naming conventions.

Asteroid "1999 RC221" was discovered on Sept. 5, 1999 with the Lowell Observatory LONEOS telescope.

Mr. Tsiganis received his PhD in physics in 2002 from the Aristotle University of Thessaloniki and now teaches astrophysics and astronomy at the university's physics faculty.