Airplane Lights, Helicopter Lights, or UFO Lights?

My friend, Bro and I were in my friends driveway and i looked up @ the stars and saw this steady bright light moving across the sky. It was going about plane speed but there was no blinking lights. Just a yellow/orange whitish steady glowing light. We took a 30 sec silence to see if we could hear something, but it didnt make a sound. and it seemed to be closer to the ground than a plane would be. it went passed my friends house and then faded away. It got dimmer and dimmer and the light just dissipated gradually. It didnt look like it was far away when it dissipated neither. I was wondering if the light i saw was a plane, helicopter or UFO light?