Surtur (moon)

Surtur /ˈsɜːrtər/ 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 Surt, a leader of the fire giants of Norse mythology.

Surtur

Discovery
Discovered by	Scott S. Sheppard David C. Jewitt Jan T. Kleyna Brian G. Marsden
Discovery date	26 June 2006
Designations
Designation	Saturn XLVIII
Pronunciation	/ˈsɜːrtər/[1]
Named after	Surt
Alternative names	S/2006 S 7
Adjectives	Surtian /ˈsɜːrtiən/[a]
Orbital characteristics[2]
Semi-major axis	22707000 km
Eccentricity	0.451
Orbital period (sidereal)	−1297.7 days
Inclination	177.5°
Satellite of	Saturn
Group	Norse group
Physical characteristics[3]
Mean diameter	4 km
Albedo	0.06 (assumed)
Apparent magnitude	24.8
Absolute magnitude (H)	15.8

Surtur is about 4 kilometres in diameter, and orbits Saturn at an average distance of 22.707 Mm in 1297.7 days. The Surtian orbit is retrograde, at an inclination of 177.5° to the ecliptic and with an eccentricity of 0.451.^[2]

Notes

1. The oblique stem of the name is Surt. The -ur is the nominative case ending.