Transit of Venus from Jupiter
A '''[[astronomical transit|transit]] of [[Venus (planet)|Venus]] across the [[Sun]] as seen from [[Jupiter (planet)|Jupiter]]''' takes place when the planet Venus passes directly between the Sun and Jupiter, obscuring a small part of the Sun's disc for an observer on Jupiter. During a transit, Venus can be seen from Jupiter as a small black disc moving across the face of the Sun.
Naturally, no one has ever seen a transit of Venus from Jupiter, nor is this likely to happen in the foreseeable future. Nevertheless, the next one will take place on [[September 20]] [[2012]].
A transit could hypothetically be observed from the surface of one of Jupiter's moons rather than from Jupiter itself. The times and circumstances of the transits would naturally be slightly different.
The Venus-Jupiter [[synodic period]] is 236.992 days. It can be calculated using the formula 1/(1/P-1/Q), where P is the [[sidereal year|sidereal orbital period]] of Venus (224.695434 days) and Q is the [[orbital period]] of Jupiter (4330.595 days).
The [[inclination]] of Venus's orbit with respect to Jupiter's [[ecliptic]] is 2.26°, which is less than its value of 3.39° with respect to Earth's ecliptic.
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Since Jupiter has a very large radius, the [[parallax]] of Venus between Jupiter's center and its north or south pole would be about 22", which is about 6 times Venus's apparent angular diameter of 3.6", or about 5.6% of the Sun's angular diameter (about 6.5'). Therefore, some extremely close near-misses might be seen as grazing transits at Jupiter's poles.
{| border cellspacing=0 cellpadding=5 align="center"
!colspan="2"|Transits of Venus from Jupiter
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| [[November 12]] [[2006]]
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| [[September 20]] [[2012]]
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| [[May 26]] [[2024]]
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| [[November 14]] [[2030]]
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| [[July 20]] [[2042]]
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| [[May 28]] [[2048]]
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| [[March 25]] [[2054]]
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| [[February 1]] [[2060]]
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| [[July 22]] [[2066]]
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| [[October 7]] [[2071]]
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| [[March 27]] [[2078]]
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| [[February 4]] [[2084]]
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| [[November 30]] [[2089]]
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| [[October 10]] [[2095]]
|}
==See also==
* [[Astronomical transit]]
{{transit visibility table}}
==References==
* [[Albert Marth]], ''Note on the Transit of the Planet Mars and its Satellites across the Sun’s disc, which will occur for the Planet Jupiter and its Satellites on April 13, 1886'', Monthly Notices of the Royal Astronomical Society, '''46''' (1886), 161–164. [http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1886MNRAS..46..161M]
[[Category:Astronomical transits]]
[[de:Venusdurchgang vom Jupiter]]