Description of Area / Surroundings
Im located in a rural area and the object was located over urban area.

Full Description & Details
The object was a circle that changed color constantly from green, red and yellow. It also changed it's shape from a clear circle to a circle that appeared to have a small bite on the upper right area. It also changed into a poligon at a certain time. I could only make out that this was a circle and changed it's shape using my binoculars. From normal view (without the binoculars) it would appear as star only it was at very low altitude but quite far away and it changed color. But the fact that made me think that this wasnt just an ordinary star was that I was observing the object and I knew i couldnt stay all night looking at it too see if it did move or something so i went to brush my teeth and when i came back i looked out the window and it was gone, stars don't dissapear in 10 minutes right?

Can sighting be explained as any conventional man-made or natural object?
Im not sure that what i saw was indeed a UFO, what i do know is that i saw a light changing color and 10 minutes later it was gone, and while zooming in i saw it was textured and changed shape.

Personal Background
Student, 17 year old

Views on UFOs, before and after sighting
I always belived there would be life on other planets than earth, but I just never tought i would get to see a UFO.

Reported Sighting? Yes
Reported To: to a friend of mine at the exact time of the sighting, he also said that he had also seen an object changing color and moving slowly and stopping every 2 minutes.
Location: Lisbon, Portugal
Age: 17