UFO Sighting in Los Angeles, California on 2020-11-17 13:07:00 – Sherman oaks ufo black box

Huge black box / cylinder looking ufo. looked like it had a huge string on it. beeped green couple times in 11 min before going back north to space. looked very much like black knight satellite. i’ve seen this a few dozen times over my life. looked 100 x bigger than plane or helicopter do at that height