S/2019 S 1

S/2019 S 1
	S/2019 S 1 on the day of its discovery, revealed by stacking multiple images to its motion
Discovery
Discovered by	E. Ashton et al.
Discovery date	2019 (announced 2021)
Designations
Alternative names	e26r58a12
Orbital characteristics
Semi-major axis	11221100 km
Eccentricity	0.623
Orbital period (sidereal)	443.78 days
Inclination	44.4°
Satellite of	Saturn
Group	Inuit group (Kiviuq)
Physical characteristics
Mean diameter	5+30%; −15% km
Albedo	0.06 (assumed)
Apparent magnitude	25.3
Absolute magnitude (H)	15.3

S/2019 S 1 is a natural satellite of Saturn. Its discovery was announced by Edward Ashton, Brett J. Gladman, Jean-Marc Petit, and Mike Alexandersen on 16 November 2021 from Canada–France–Hawaii Telescope observations taken between 1 July 2019 and 14 June 2021.^[1]

S/2019 S 1 is about 5 kilometres in diameter, and orbits Saturn at an average distance of 11.2 million km (7.0 million mi) in 443.78 days, at an inclination of 44° to the ecliptic, in a prograde direction and with an eccentricity of 0.623.^[1] It belongs to the Inuit group of prograde irregular satellites, and is among the innermost irregular satellites of Saturn.^[3] It might be a collisional fragment of Kiviuq and Ijiraq, which share very similar orbital elements.^[4]