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Aegir (moon)

Aegir, also Saturn XXXVI (provisional designation S/2004 S 10), is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on May 4, 2005, from observations taken between December 12, 2004, and March 11, 2005.

Aegir
Discovery
Discovered byS. Sheppard, D. Jewitt, J. Kleyna, and B. Marsden
Discovery dateMay 4, 2005
Designations
Designation
Saturn XXXVI
Pronunciation/ˈjɪər, ˈæɡɪər/ etc.
Named after
Ægir
S/2004 S 10
Orbital characteristics
20,735,000 km[1]
Eccentricity0.252[1]
1,025.908 d
Inclination166.7°[1]
Satellite ofSaturn
GroupNorse group
Physical characteristics
Mean diameter
6+50%
−30%
 km
[1]

Aegir is about 6 kilometres in diameter, and orbits Saturn at an average distance of 19,618 Mm in 1025.908 days, at an inclination of 167° to the ecliptic (140° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.237.

Name

The moon was named in April 2007 after Ægir, a giant from Norse mythology, the personification of tranquil seas, the one who soothes storms away. He is a son of Fornjót, and brother of Logi (fire, flame) and Kári (wind). The exoplanet Epsilon Eridani b (AEgir) was also named after this figure in 2015.[2]

The name may be pronounced various ways. /ˈjɪər/ (with the 'g' pronounced as a y-sound) approximates modern Norwegian and Icelandic. /ˈæɡɪər/ (with a hard 'g') approximates what the Old Norse may have sounded like, while the Latinized/spelling pronunciations /ˈɪər/, /ˈɛɪər/ and /ˈɪər/ are also found.[3][4][5]

References

  1. ^ a b c d Ma, Yuehua; et al. (2010), "On the Origin of Retrograde Orbit Satellites around Saturn and Jupiter", Icy Bodies of the Solar System, Proceedings of the International Astronomical Union, IAU Symposium, vol. 263, pp. 157–160, Bibcode:2010IAUS..263..157M, doi:10.1017/S1743921310001687.
  2. ^ "Final Results of NameExoWorlds Public Vote Released". International Astronomical Union. 15 December 2015. Retrieved 2017-09-25.
  3. ^ Merriam-Webster's Encyclopedia of Literature (1995)
  4. ^ "Aegir". Dictionary.com Unabridged (Online). n.d.
  5. ^ Harold Stanford (1922) The Standard Reference Work: For the Home, School and Library

External links

  • T. Denk's Aegir website
  • Institute for Astronomy Saturn Satellite Data
  • IAUC 8523: New Satellites of Saturn[permanent dead link] May 4, 2005 (discovery)
  • MPEC 2005-J13: Twelve New Satellites of Saturn May 3, 2005 (discovery and ephemeris)
  • IAUC 8826: Satellites of Jupiter and Saturn[permanent dead link] April 5, 2007 (naming the moon)

aegir, moon, other, uses, aegir, disambiguation, aegir, also, saturn, xxxvi, provisional, designation, 2004, natural, satellite, saturn, discovery, announced, scott, sheppard, david, jewitt, kleyna, brian, marsden, 2005, from, observations, taken, between, dec. For other uses see Aegir disambiguation Aegir also Saturn XXXVI provisional designation S 2004 S 10 is a natural satellite of Saturn Its discovery was announced by Scott S Sheppard David C Jewitt Jan Kleyna and Brian G Marsden on May 4 2005 from observations taken between December 12 2004 and March 11 2005 AegirDiscoveryDiscovered byS Sheppard D Jewitt J Kleyna and B MarsdenDiscovery dateMay 4 2005DesignationsDesignationSaturn XXXVIPronunciation ˈ aɪ j ɪer ˈ ae ɡ ɪer etc Named afterAEgirAlternative namesS 2004 S 10Orbital characteristicsSemi major axis20 735 000 km 1 Eccentricity0 252 1 Orbital period sidereal 1 025 908 dInclination166 7 1 Satellite ofSaturnGroupNorse groupPhysical characteristicsMean diameter6 50 30 km 1 Aegir is about 6 kilometres in diameter and orbits Saturn at an average distance of 19 618 Mm in 1025 908 days at an inclination of 167 to the ecliptic 140 to Saturn s equator in a retrograde direction and with an eccentricity of 0 237 Name EditThe moon was named in April 2007 after AEgir a giant from Norse mythology the personification of tranquil seas the one who soothes storms away He is a son of Fornjot and brother of Logi fire flame and Kari wind The exoplanet Epsilon Eridani b AEgir was also named after this figure in 2015 2 The name may be pronounced various ways ˈ aɪ j ɪer with the g pronounced as a y sound approximates modern Norwegian and Icelandic ˈ ae ɡ ɪer with a hard g approximates what the Old Norse may have sounded like while the Latinized spelling pronunciations ˈ iː dʒ ɪer ˈ ɛ dʒ ɪer and ˈ eɪ dʒ ɪer are also found 3 4 5 References Edit a b c d Ma Yuehua et al 2010 On the Origin of Retrograde Orbit Satellites around Saturn and Jupiter Icy Bodies of the Solar System Proceedings of the International Astronomical Union IAU Symposium vol 263 pp 157 160 Bibcode 2010IAUS 263 157M doi 10 1017 S1743921310001687 Final Results of NameExoWorlds Public Vote Released International Astronomical Union 15 December 2015 Retrieved 2017 09 25 Merriam Webster s Encyclopedia of Literature 1995 Aegir Dictionary com Unabridged Online n d Harold Stanford 1922 The Standard Reference Work For the Home School and LibraryExternal links EditT Denk s Aegir website Institute for Astronomy Saturn Satellite Data D Jewitt s New Satellites of Saturn page IAUC 8523 New Satellites of Saturn permanent dead link May 4 2005 discovery MPEC 2005 J13 Twelve New Satellites of Saturn May 3 2005 discovery and ephemeris IAUC 8826 Satellites of Jupiter and Saturn permanent dead link April 5 2007 naming the moon Retrieved from https en wikipedia org w index php title Aegir moon amp oldid 1132672748, wikipedia, wiki, book, books, library,

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