I started observing Jupiter at 8:30pm Miami time and noticed an object lined up with Io and Ganymede. It was about half the diameter of IO and was an orangy/ruddy color. This thing was traveling fast. By midnight it was well away from the two moons. I observed with several eyepieces, mainly with my binoviewer setup at 200x, as well as my 24mm Hyperion at 50x. It responded to magnification more like moons or planets, not like stars do. Also, I observed the background stars and this did not appear to be one of them.
I thought it might be Vesta, but the location and color are wrong. I even checked to see if maybe it was Mars! My best guess is that I was tracking an asteroid. Could I have found Nibiru? Just kidding, maybe. Any ideas what I was observing?
ADDED: Forgot to add in the sketch that the bottom one is for the view at midnight.