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Chrysalis (hypothetical moon)
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Hypothetical moon of Saturn
Chrysalis was a hypothetical former moon of Saturn, named in 2022 by scientists of the Massachusetts Institute of Technology using data from the Cassini–Huygens mission.[1] The moon is hypothesized to have been torn apart by Saturn's tidal forces, somewhere between 200 and 100 million years ago. Up to 99% of the moon's mass would have been swallowed by Saturn, with the remaining 1% forming the rings of Saturn.[2] The origin of Saturn's rings from the destruction of a satellite has been previously proposed by other authors.[3]
Chrysalis was hypothesized to be similar in size and mass to Iapetus, with a similar water-ice composition, and to have orbited somewhere between Iapetus and Titan. Its orbit around Saturn may have been degraded as a result of Titan's orbit expanding due to interactions of the Saturnian system with a resonance with Neptune, resulting in the increasing eccentricity of Chrysalis's orbit until being torn apart during a close encounter with Saturn by its parent planet's gravitational force.[4]
The hypothetical moon was named after the pupa stage of a butterfly, with the rings of Saturn representing its emergence from the chrysalis.[4]
See also<br>[edit]
List of hypothetical Solar System objects
Rings of Saturn § Formation and evolution of main rings
Phaeton
References<br>[edit]
↑ "Saturn's rings could have come from a destroyed moon named Chrysalis". New Scientist. 15 September 2022.
↑ Wisdom, Jack; Dbouk, Rola; Militzer, Burkhard; Hubbard, William B.; Nimmo, Francis; Downey, Brynna G.; French, Richard G. (September 16, 2022). "Loss of a satellite could explain Saturn's obliquity and young rings". Science. 377 (6612): 1285–1289. Bibcode:2022Sci...377.1285W. doi:10.1126/science.abn1234. hdl:1721.1/148216. PMID 36107998. S2CID 252310492.
↑ Charnoz, Sébastien; Morbidelli, Alessandro; Dones, Luke; Salmon, Julien (February 2009). "Did Saturn's rings form during the Late Heavy Bombardment?". Icarus. 199 (2): 413–428. arXiv:0809.5073. Bibcode:2009Icar..199..413C. doi:10.1016/j.icarus.2008.10.019. ISSN 0019-1035. S2CID 119229648.
1 2 Dunham, Will (15 September 2022). "Violent death of moon Chrysalis may have spawned Saturn's rings". Reuters. Retrieved 17 September 2022.
Further reading<br>[edit]
https://www.hou.usra.edu/meetings/lpsc2026/pdf/1132.pdf
Moons of Saturn<br>Listed in approximate increasing distance from Saturn<br>Inner ring moons<br>S/2009 S 1
Pan
Daphnis
Atlas
Prometheus
Pandora
+1 moon
Co-orbitals<br>Epimetheus
Janus
Ring-embedded moons<br>Aegaeon
Methone
Anthe
Pallene
Major moons<br>(with trojans)<br>Mimas
Enceladus
Tethys<br>Telesto
Calypso
Dione<br>Helene
Polydeuces
Rhea
Titan
Hyperion
Iapetus
Inuit group (39)<br>Kiviuq subgroup (23)<br>S/2019 S 1
Kiviuq
Ijiraq
+20 moons
Paaliaq<br>Paaliaq
Siarnaq subgroup (15)<br>S/2004 S 31
Tarqeq
Siarnaq
S/2020 S 5
+11 moons
Gallic group (19)<br>Albiorix
Bebhionn
Saturn LX
Erriapus
Tarvos
S/2020 S 4
S/2006 S 12
S/2004 S 24
+11 moons
Norse group (210)<br>Low-inclination (15)<br>Skathi
Hyrrokkin
Narvi
Bestla
+11 moons
Kari subgroup (16)<br>S/2006 S 1
Farbauti
S/2006 S 3
Kari
Geirrod
S/2004 S 21
S/2004 S 36
+9 moons
Mundilfari subgroup (146)<br>S/2004 S 37
Skoll
S/2004 S 13
Mundilfari
Gridr
Bergelmir
Jarnsaxa
Hati
S/2004 S 17
S/2004 S 12
Eggther
Aegir
Beli
Gunnlod
Saturn LXVII
S/2005 S 5
S/2004 S 28
Fenrir
Surtur
Loge
S/2004 S 39
Thiazzi
Saturn LXIV
Fornjot
+122 moons
Phoebe subgroup (33)<br>Phoebe
S/2006 S 20
S/2006 S 9
S/2007 S 2
Greip
Suttungr
S/2007 S 3
Thrymr
Angrboda
Gerd
Skrymir
Alvaldi
Ymir
Saturn LVIII
+19 moons
See also<br>Rings of Saturn
Moonlets<br>S/2004 S 3
S/2004 S 4
S/2004 S 6
Peggy
Bleriot
Earhart
Santos-Dumont
Cassini–Huygens
In fiction
Chiron
Chrysalis
Themis
Category
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Categories: Hypothetical moons<br>Moons of Saturn<br>Hypothetical bodies of the Solar System<br>Planetary science stubs<br>Hypothetical astronomical objects
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Chrysalis (hypothetical moon)
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