In the local dialect of southern Liechtenstein, Umbäässa is a small and barely visible ant.

It was discovered in the constellation Hercules about 10 degrees west of Vega, the brightest star in the summer skies.

Transits in front of the star GSC 03089-00929 were detected by two 10 cm telescopes operating out of Palomar and Lowell Observatories.

Transits of TrES-3 were also independently observed by the Hungarian Automated Telescope Network.

Seven high-precision radial velocity measurements were made using the HIRES spectrometer at W. M. Keck Observatory, which confirmed the presence of a planetary mass companion with a minimum mass twice that of the planet Jupiter.