S/2004 S 17

S/2004 S 17 is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 4 May 2005 from observations taken between 13 December 2004 and 5 March 2005.

S/2004 S 17

Discovery[1]
Discovered by	Scott S. Sheppard et al.
Discovery site	Mauna Kea Obs.
Discovery date	13 December 2004
Orbital characteristics[2]
Epoch 9 August 2022 (JD 2459800.5)
Observation arc	15.67 yr (5,725 days)
Semi-major axis	0.1326708 AU (19,847,000 km)
Eccentricity	0.1647702
Orbital period (sidereal)	–2.86 yr (–1043.92 d)
Mean anomaly	226.13753°
Mean motion	0° 20m 41.48s / day
Inclination	168.11825° (to ecliptic)
Longitude of ascending node	34.46812°
Argument of perihelion	186.71765°
Satellite of	Saturn
Group	Norse group
Physical characteristics
Mean diameter	≈4 km[3]
Albedo	0.04 (assumed)[3]
Apparent magnitude	25.2[3]
Absolute magnitude (H)	16.0[2]

S/2004 S 17 is about 4 kilometres in diameter, and orbits Saturn at an average distance of 19,847,000 kilometres in about 1,044 days, at an inclination of 168.1° to the ecliptic, in a retrograde direction and with an eccentricity of 0.165.^[2][4]

This moon was considered lost^[5] until its recovery was announced on 12 October 2022.^[2]