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Moon of Saturn From Wikipedia, the free encyclopedia
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 on the day of its discovery, revealed by stacking multiple images to its motion | |
| Discovery[1] | |
|---|---|
| Discovered by | E. Ashton et al. |
| Discovery date | 2019 (announced 2021) |
| Designations | |
| e26r58a12[2] | |
| Orbital characteristics[1] | |
| 11221100 km | |
| Eccentricity | 0.623 |
| 443.78 days | |
| Inclination | 44.4° |
| Satellite of | Saturn |
| Group | Inuit group (Kiviuq)[3][2] |
| Physical characteristics[4] | |
| 5+30% −15% km | |
| Albedo | 0.06 (assumed) |
| 25.3 | |
| 15.3 | |
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]
This moon's eccentric orbit takes it closer than 1.5 million km (0.93 million mi) to Iapetus several times per millennium.[4]
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