Large silent craft with changing light pulses

At first what looked like to large orange lights hovering (two side by side), I soon noticed the object was travelling in a smooth arc similar to a satellite but was much lower in altitude and very large.

As it passed almost above me I noticed three very large lights in triangle formation under the object with a smaller light in the middle. The three lights forming the triangle were pulsing and alternating light. I could see above the lights a dark / black mass but could not figure out its shape.

All the while the object continued to move in a smooth gliding manner. It made absolutely no sound as a man made flying object would from that height. It disappeared from my sight over trees not long after passing over me. This all occurred within 2 minutes.