I was out imaging the Milky Way and luckily spotted this. I only found out afterwards that it was the LandSat 9 satellite. It was very bright and obvious, and moved across the sky quite quickly. So to keep the exposure as short as possible (to minimise motion blur) I put the ISO as high as it would go on my camera (Canon 760D, ISO12800, 1 sec). The end result isn’t the best quality, but it captured a really memorable moment.