S/2020 S 3

Not to be confused with the non-periodic comet, C/2020 S3 (Erasmus).

S/2020 S 3 is a natural satellite of Saturn. Its discovery was announced by Edward Ashton, Brett J. Gladman, Jean-Marc Petit and Mike Alexandersen on May 5, 2023 from observations taken between July 3, 2019 and July 9, 2021.^[2]

S/2020 S 3

Discovery
Discovered by	E. Ashton, Brett J. Gladman
Discovery date	2020
Orbital characteristics
Semi-major axis	18,054,700 km (11,218,700 mi)[1]
Eccentricity	0.038
Orbital period (sidereal)	2.486 yrs (907.99 d)[1]
Inclination	46.1° (to the ecliptic)
Satellite of	Saturn
Group	Inuit group (Siarnaq)
Physical characteristics
Mean diameter	3 km
Absolute magnitude (H)	16.4

S/2020 S 3 is about 3 kilometers in diameter, and orbits Saturn at a distance of 17.930 Gm in 896.35 days, at an inclination of 47.1, orbits in a prograde direction and with an eccentricity of 0.038.^[2] S/2020 S 3 belongs to the Inuit group, it may be a Siarnaq fragment that broke off long ago, since it shares the same orbital elements and its orbit is quite circular due to its low eccentricity unlike the other irregular moons.^[3]