&sq=&lang=&file=File:N1643264379_1.jpg) Aegaeon's crescent imaged by the Cassini spacecraft from a distance of 15238.2 km in 2010 | |
| Discovery | |
|---|---|
| Discovered by | Carolyn Porco |
| Discovery date | March 3, 2009 |
| Cassini Imaging Science Team | |
| Designations | |
Designation | Saturn LIII |
| Pronunciation | /iːˈdʒiːɒn/[1] |
Named after | Αιγαίων Aigaiōn |
| Adjectives | Aegaeonian /iːdʒiːˈoʊniən/[2] |
| Orbital characteristics | |
| Epoch JD 2454467.00075444 TDB | |
| 167493.665±0.004 km[3] | |
| Eccentricity | 0.00042277±0.00000004[3] |
| 0.80812 d[4] | |
| Inclination | 0.0007°±0.6°[3] |
| Satellite of | Saturn |
| Group | Source of the G Ring |
| Physical characteristics | |
| Dimensions | 1.40 × 0.50 × 0.40 km (± 0.10 × 0.12 × 0.16 km)[5]: 2 |
| 0.66±0.12 km[5]: 2 | |
| Volume | 0.15 km3[a] |
| Mass | (7.82±3.00)×1010 kg[5]: 3 |
Mean density | 0.539±0.140 g/cm3[5]: 3 |
| 0.009–0.013 mm/s2[5]: 3 (0.9–1.3 micro-g) | |
| 0.001 km/s at longest axis to 0.002 km/s at poles | |
| assumed synchronous | |
| Albedo | < 0.15 |
Aegaeon /iːˈdʒiːɒn/, or Saturn LIII (provisional designation S/2008 S 1), is a natural satellite of Saturn. It has an extremely elongated shape whose surface is thought to be similarly smooth as Methone.[6] It orbits between Janus and Mimas within Saturn's G Ring.
- ^ Noah Webster (1884) A Practical Dictionary of the English Language
- ^ Maravilla, D.; Leal-Herrera, J. L. (2014). "The Saturnian G-Ring: A Short Note about its Formation". Revista Mexicana de Astronomía y Astrofísica. 50 (2): 342, 346, 347. Bibcode:2014RMxAA..50..341M. ISSN 0185-1101.
- ^ a b c Hedman, M.M.; Cooper, N.J.; Murray, C.D.; Beurle, K.; Evans, M.W.; Tiscareno, M.S.; Burns, J.A. (May 2010). "Aegaeon (Saturn LIII), a G-ring object". Icarus. 207 (1): 433–447. arXiv:0911.0171. Bibcode:2010Icar..207..433H. doi:10.1016/j.icarus.2009.10.024. S2CID 118559643.
- ^ Cite error: The named reference
IAUCircularwas invoked but never defined (see the help page). - ^ a b c d e f Cite error: The named reference
Thomas2020was invoked but never defined (see the help page). - ^ Battersby, S. (2013-05-17). "Saturn's egg moon Methone is made of fluff". www.newscientist.com. New Scientist. Retrieved 2013-05-21.
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