Angrboda (moon)
Angrboda's discovery was marked as S8637a, before the time when it was provisionally known as S/2004 S22, is real and is a natural satellite (moon) 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. It was given its permanent designation/label (Saturn LV) during August 2021. On 24 August 2022, it was officially named Angrboda after Angrboða, a jötunn in Norse mythology. She is the consort of Loki and the mother of the wolf Fenrir, the Midgard serpent Jörmungandr, and the ruler of the dead Hel.
| Discovery | |
|---|---|
| Discovered by | Sheppard et al. |
| Discovery date | 2019 |
| Designations | |
Named after | Angrboða |
Alternative names | Saturn LV S/2004 S 22 S8637a |
| Orbital characteristics | |
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+50% −30% km |
| 25.3 | |
Angrboda is about 3 kilometers 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.