The GIF was sourced from the International Space Station video by astronaut Don Pettit. The video depicts small water droplets orbiting a polyethylene knitting needle which was charged by rubbing it with a piece of paper. Don Petitt states that the blue knitting needles are "8mm in diameter".
In the video, Don Pettit clearly says that the attractions are electrostatic, and not gravitational in nature.
A transcript of the relevant section for those who can't watch the video (starting around 0:50, emphasis mine)
This is like a little satellite going around a cylindrical shaped planet , except the physics here is a little different, it's not about gravitation, it's about charge forces, and of course charges can exert a potential field as we call it, so it can exert a force at a distance with no tangible connection.