Angrboda (moon)

Angrboda (Saturn LV), provisionally known as S/2004 S 22, is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, and Jan Kleyna on October 7, 2019 from observations taken between December 12, 2004 and February 1, 2006.^[3] It was given its permanent designation in August 2021.^[4] On 24 August 2022, it was officially named after Angrboða, a jötunn in Norse mythology.^[5] She is the consort of Loki and the mother of the wolf Fenrir, the Midgard serpent Jörmungandr, and the ruler of the dead Hel.^[6]

Angrboda

Discovery[1]
Discovered by	Sheppard et al.
Discovery date	2019
Designations
Named after	Angrboða
Alternative names	Saturn LV S/2004 S 22 S8637a[2]
Orbital characteristics[2]
Semi-major axis	20379900 km
Eccentricity	0.257
Orbital period (sidereal)	−1080.4 days
Inclination	177.4°
Satellite of	Saturn
Group	Norse group
Physical characteristics
Mean diameter	3 km
Apparent magnitude	25.3
Absolute magnitude (H)	16.1[3]

Angrboda is about 3 kilometres in diameter, and orbits Saturn at an average distance of 20.636 Gm in 1107.13 days, at an inclination of 177° to the ecliptic, in a retrograde direction and with an eccentricity of 0.251.^[3] With an absolute magnitude of 16.1,^[3] it is currently the faintest named moon of Saturn.