Bright red object as bright as Jupiter going south then in seconds darts west and fades away.

I walked outside with someone at 11pm, when we started to look up at the sky since it was a completly clear night, and there was a full moon out.  We looked out to the north when the other person noticed a glowing red object moving across the sky from the north to the south.  The object can best be described as the size and brightness of Jupiter but red.  The light also seemed to fade in and out at times slowly, not like the strobe light on a airplane.  We stood there for between 30 seconds to a minute while the object continued on its southerly path, until it turned towards the west and within a few seconds was gone.  I can say that from seeing numerous airplanes at night, it looked nothing like what a airplane does at night(with the lights, etc).