Was at jellystone park with my fiancé staying at a cabin. i was setting up my telescope trying to get it to align. my fiancé looked up and asked if the object in the sky was a satellite. i looked at it and it was bright, like the space station but brighter. no navigation lights, and going across the sky then starts weaving back and forth. then a tree blocked my view, i ran over there and was able to see it again. the lights went dim, and it just sped away and disappeared. i spoke to my good friend mark kuba about it and he said i should make a report. i have some of it on video, but i caught tail end of it on my phone it wasn't until i saw the movement that i took my phone out to get video because i thought mark would like to see it.