Wikipedia
Surtur is a fictional demon appearing in American comic books published by Marvel Comics. He usually appears as a villain in stories featuring the Norse hero Thor. Based on the fire giant Surtr from Norse mythology, and was adapted by writer Stan Lee and artist Jack Kirby, and first appeared in Journey into Mystery #97 (October 1963). The character was once described as one of "The Ten Most Heinous Enemies of the Mighty Thor".
Surtur , or Saturn XLVIII (provisional designation S/2006 S 7), is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on June 26, 2006 from observations taken between January and April 2006. It was named after Surtr, a leader of the fire giants of Norse mythology.
Surtur is about 6 kilometres in diameter, and orbits Saturn at an average distance of 22,243.6 Mm in 1238.575 days. The Surtian orbit is retrograde, at an inclination of 166.9° to the ecliptic (148.9° to Saturn's equator) and with an eccentricity of 0.3680.