Photo error makes a nice squiggle

When taking pictures of the night sky, I have a couple rules on what not to do. One, I try not to photograph planes. When I see one nearing my field of view, I usually end the photo and wait for it pass. However, Saturday morning, a bright object resembled the International Space Station, so I decided to photograph it. The second rule: never kick the tripod. This photo is an exception to both rules:

jg