Most lists should contain the magnitude of the objects so you just need to know the
limiting magnitude of your scope. I assume your scope is 12.5 cm aperture? If so, my calcs suggest the best your scope will do is 12.98 mag - almost mag 13.
Here's some links where you can work it out for yourself and some also take into account what you can see with the naked eye (so it compensates for your visual acuity and light pollution, etc).
http://www.go.ednet.ns.ca/~larry/astro/maglimit.html
http://www.astrodigital.org/astronomy/seeing.html
http://www.spacegazer.com/telescope-basics-g.asp
Al.