| 词条 | Dia (moon) |
| 释义 |
| name = Dia | pronounced = {{IPAc-en|ˈ|d|aɪ|.|ə|}} | bgcolour = #ffc0c0 | discoverer = Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, and Eugene A. Magnier | discovered = December 5, 2000 | satellite_of = Jupiter | mean_orbit_radius = 12.1 million km | eccentricity = 0.210[1] | period = 274 d | inclination = 28.2°[1] | mean_radius = ≈2 km | magnitude = ≈23[1] }} Dia ({{IPAc-en|ˈ|d|aɪ|.|ə|}}), also known as Jupiter LIII, is a prograde irregular satellite of Jupiter. Provisionally known as S/2000 J 11, it received its name on March 7, 2015.[1] It is named after Dia, daughter of Deioneus (or Eioneus), wife of Ixion. According to Homer, she was seduced by Zeus in stallion form; Pirithous was the issue. The satellite is one of the three known small bodies in the Himalia group,[2] the other two being S/2018 J 1 and S/2017 J 4. Dia is thought to be about 4 kilometres in diameter.[3] It orbits Jupiter at an average distance of 12 million km in 274 days, at an inclination of 28° (to Jupiter's equator), and with an eccentricity of 0.21.[1] Observational historyDia was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000 with an observation arc of 26 days.[4][5] Initial observations were not followed up, and Dia was not observed for more than a decade after 2000. This apparent disappearance led some astronomers to consider the moon lost.[6] One theory was that it had crashed into Himalia, creating a faint ring around Jupiter.[7] However, it was finally recovered in observations made in 2010 and 2011.[8] References1. ^CBET (Central Bureau Electronic Telegram) 4075: 20150307: Satellites of Jupiter, March 7, 2015 2. ^Sheppard, S. S.; Jewitt, D. C.; An abundant population of small irregular satellites around Jupiter {{webarchive |url=https://web.archive.org/web/20060813000000/http://www.ifa.hawaii.edu/~jewitt/papers/JSATS/SJ2003.pdf |date=August 13, 2006 }}, Nature, 423 (May 2003), pp. 261–263 3. ^Sheppard, S. S.; Jewitt, D. C.; Porco, C.; Jupiter's outer satellites and Trojans {{webarchive |url=https://web.archive.org/web/20070614045102/http://www.ifa.hawaii.edu/~jewitt/papers/JUPITER/JSP.2003.pdf |date=June 14, 2007 }}, in Jupiter: The planet, satellites and magnetosphere, edited by Fran Bagenal, Timothy E. Dowling, William B. McKinnon, Cambridge Planetary Science, Vol. 1, Cambridge, UK: Cambridge University Press, {{ISBN|0-521-81808-7}}, 2004, pp. 263-280 4. ^{{cite web |author=Daniel W. E. Green |url=http://www.cbat.eps.harvard.edu/iauc/07500/07555.html |title=IAUC 7555: Satellites of Jupiter |date=January 5, 2001 |publisher=International Astronomical Union}} 5. ^{{cite web |author=Brian G. Marsden |url=http://www.minorplanetcenter.org/mpec/K01/K01A29.html |title=MPEC 2001-A29: S/2000 J 7, S/2000 J 8, S/2000 J 9, S/2000 J 10, S/2000 J 11 |date=January 15, 2001 |publisher=International Astronomical Union Minor Planet Center}} 6. ^{{cite web |title=FAQ: Why don't you have Jovian satellite S/2000 J11 in your system? |publisher=JPL Solar System Dynamics |url=http://ssd.jpl.nasa.gov/?faq#A07 |accessdate=2011-02-13}} 7. ^[https://www.newscientist.com/article/mg20527523.400-lunar-marriage-may-have-given-jupiter-a-ring.html "Lunar marriage may have given Jupiter a ring"], New Scientist, March 20, 2010, p. 16.{{subscription required}} 8. ^1 2 3 4 {{cite web |date=2012-09-11 |title=MPEC 2012-R22 : S/2000 J 11 |publisher=Minor Planet Center |last=Williams |first=Gareth V. |url=http://www.minorplanetcenter.net/mpec/K12/K12R22.html |accessdate=2012-09-11}} External links
5 : Himalia group|Moons of Jupiter|Irregular satellites|Discoveries by Scott S. Sheppard|Astronomical objects discovered in 2000 |
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