an orange sphere appeared , approx. 6000 meters altitude , speed about approx . 350 kilometers an hour . it flew in a constant line , very slow . no positioning lights or blinking lights , a constant orange glow . 3 other people saw it , too . we were sitting outside , no lights , except a candle, so we could see the sky very clear . no clouds were there .the object flew from left to right , and suddenly disappeared in about quarter of a second . between two trees , just disappeared . no clouds !personal reactions : a very stramge feeling, not quite normal . cannot describe it very exactly !