Saucer with dome & windows hovering erratically over residential area. Lit by full moon, totally silent, vanished without trace

On a very clear and warm Friday evening, I was driving my best friend home from our college library. Upon parking in front of his house on the SW corner of Quedo Dr. and Kelvin Ave. in Woodland Hills, I got out of the car (facing east) and my eye was caught by something moving under the full moon which had just risen.  I thought at first it was a large owl, but it quickly became apparent it was a brownish-metallic saucer hovering in a herky-jerky fashion over a residential area with no lights on and absolutely making no sound.  
Since this stealthy object was being well illuminated by the moonlight, we were able to observe this object with utter clarity and awe for about 5 minutes whereupon this thing stop; momentarily shudder; then vanish from sight.  It was as if it sensed us watching it and left.  
I estimated this UFO to be appx. 300 Yds. away and 100 Yds. up, and about the size of a school bus.  It had a small dome with a few portholes or windows which may have been slightly lit.  It is of note that the air was highly static and the hair on our arms was sticking up.  I also guessed that the craft was over the proximity of DeForest St. @ Natoma Ave.
Although this occurred over 30 years ago, I hope it is of some relevance to report this now other than to get it off my chest.  This was quite an eerie experience; in fact my friend got so scared, he panicked and ran to his house where he hid in a corner of his room under a blanket for a full day.  Afterwards, he refused to talk about the incident and got very angry if I brought up the subject, so I refused to report it without his cooberration.
I was in complete control of my senses that night, and later spent 6 years in the Marine Corps. as an electronics specialist in an A-4 Skyhawk squadron; and have seen most every type of aircraft; but nothing like this one.
Date is approximate.  PD