Was in the backyard on the pool deck looking at the moon/airplanes with my 6/yo daughter with our telescope as we do almost nightly. Tonight the sky was clear. At 1840hrs I witnessed what at first to be a white ball with the naked eye moving slowly and silently ESE towards the moons direction. I was able to locate the object with the telescope, no details were seen..was not cylindrical in shape like a planes..no wings were noted or engine sounds. Best I can give shape wise would be like a stopsign but closer to say an emerald cut stone. Wife looked at the object and confirmed what Myself and our daughter was looking at. No contrail was noted. After losing sight of it with the telescope we noticed a passenger jet traveling in the same direction and appeared not as bulky as the object in question. We could clearly hear the engines of the airliner as well as a contrail. Telescope is 15x45 zoom Kmart store telescope.We did consider that the object could have a weather balloon but not sure what it was.