1500 Jyväskylä is a very small main belt asteroid, discovered by the Finnish astronomer Yrjö Väisälä on October 16th 1938. Almost nothing else is known about this asteroid except its location and very approximate size (between 7 and 15 km in diameter). Väisälä chose to name it after a city in the Lakeland region of central Finland.
Lake Palokkajarvi (above) is only 2km north of the city of Jyväskylä.
This is Väisälä’s only entry in these pages at present, but as he discovered a quite impressive number of asteroids (128) I’m going to add him to the list for a mention next year on his 124th birthday (September 6th).
2012 – Discovery of exoplanet Alpha Centauri Bb using Dopler spectroscopy, by Xavier Dumusque and others at Geneva Observatory.