Noticed red lights to the north of Simi appearing to be in the mountains, girlfriend thought she was seeing Magic Mountain

Object had all red lights around edge, and hovered for 5min. Then all red lights went out and a few stayed on others blinked making it look like a plane as it went south towards a rocket engine testing sight called Rocket-Dyne, as it got over Rocket-Dyne all lights once again returned as it hovered for a few min. The object appeared to be disc shaped with a sail shaped rotating apparatus on top with lights at the points. This object never made a sound and was no more than 1000ft in the sky. As this object moved south it did so at about the speed as a plane. When it left it did so very fast, looking like a blue streak, you could not follow it, it was gone in a second, still never making a sound. This has been a long time ago, but I still remember all the details, this is really the first time I have had an opportunity to document it. Hoping there are others who witnessed the same object.