Gridr (Saturn LIV), originally known as S/2004 S 20, 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 March 22, 2007.[3] It was given its permanent designation in June 2021.[4] On 24 August 2022, it was officially named after Gríðr, a jötunn in Norse mythology.[5] She is the mother of Víðarr the silent and the consort of Odin. She warned Thor about the treachery of Geirröðr and equipped him with her belt of strength, her iron glove, and her staff Gríðarvöl (Gríðr's-staff).[6]
Gridr is about 4 kilometres in diameter, and orbits Saturn at an average distance of 19.418 Gm in 1010.55 days, at an inclination of 163° to the ecliptic, in a retrograde direction and with an eccentricity of 0.197.[3]
^"Names Approved for 10 Small Satellites of Saturn". usgs.gov. USGS. 24 August 2022. Retrieved 30 August 2022.
^Lindow, John (2002). Norse Mythology: A Guide to Gods, Heroes, Rituals, and Beliefs. Oxford University Press. p. 149. ISBN978-0-19-983969-8.
January 20, 2023
gridr, moon, gridr, saturn, originally, known, 2004, natural, satellite, saturn, discovery, announced, scott, sheppard, david, jewitt, kleyna, october, 2019, from, observations, taken, between, december, 2004, march, 2007, given, permanent, designation, june, . Gridr Saturn LIV originally known as S 2004 S 20 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 March 22 2007 3 It was given its permanent designation in June 2021 4 On 24 August 2022 it was officially named after Gridr a jotunn in Norse mythology 5 She is the mother of Vidarr the silent and the consort of Odin She warned Thor about the treachery of Geirrodr and equipped him with her belt of strength her iron glove and her staff Gridarvol Gridr s staff 6 GridrDiscovery 1 Discovered bySheppard et al Discovery date2019DesignationsNamed afterGridrAlternative namesSaturn LIVS 2004 S 20S2423b 2 Orbital characteristics 2 Semi major axis19211 000 kmEccentricity0 204Orbital period sidereal 990 23 daysInclination163 1 Satellite ofSaturnGroupNorse groupPhysical characteristicsMean diameter4 50 30 kmApparent magnitude25 0Gridr is about 4 kilometres in diameter and orbits Saturn at an average distance of 19 418 Gm in 1010 55 days at an inclination of 163 to the ecliptic in a retrograde direction and with an eccentricity of 0 197 3 References Edit Discovery Circumstances from JPL a b S S Sheppard 2019 Moons of Saturn Carnegie Science on line a b MPEC 2019 T126 S 2004 S 20 minorplanetcenter net Retrieved 7 October 2019 M P C 132212 PDF Minor Planet Center International Astronomical Union 1 June 2021 Retrieved 16 June 2021 Names Approved for 10 Small Satellites of Saturn usgs gov USGS 24 August 2022 Retrieved 30 August 2022 Lindow John 2002 Norse Mythology A Guide to Gods Heroes Rituals and Beliefs Oxford University Press p 149 ISBN 978 0 19 983969 8 Retrieved from https en wikipedia org w index php title Gridr moon amp oldid 1132760718, wikipedia, wiki, book, books, library,
