Lol, this is the Galilean moom "Lo" that orbits Jupiter. Not sure why its yellow, never looked into it... That could be a possibility XD?

Another one of Enceladus that is not in the gallery [warning ultra HD]: http://media.npr.org/assets/img/2012/09/07/enceladus_plumes_10-a38e2bffd08fd2c7f475f4f99e100877ce8dbc07.jpg (Unsupported image host)