Not sure if this will help you, but.. the closest thing I can find online to Ulker is Alcor, in Ursa Majoris (Big Dipper).
Maybe it's not related, but it's the most similar thing I could find on a quick search, and might be a starting point?
Links
http://www.astro.uiuc.edu/~kaler/sow/alcor.html
http://www.winshop.com.au/annew/Alcor.html
Also if you search for Ulka, it turns up an Indian girl name apparently meaning a meteorite or shooting-star.
- chazda