Transit of Earth from Jupiter
A '''[[astronomical transit|transit]] of [[Earth]] across the [[Sun]] as seen from [[Jupiter (planet)|Jupiter]]''' takes place when the planet Earth passes directly between the Sun and Jupiter, obscuring a small part of the Sun's disc for an observer on Jupiter. During a transit, Earth can be seen from Jupiter as a small black disc moving across the face of the Sun.
The event is particularly interesting because both the Earth and the [[Moon]] can usually be seen together in transit. In rare cases one of them transits and the other does not, such as on [[December 21]] [[2060]], when there is a grazing transit for the Moon and a near-miss for the Earth. In other cases, the two May Be so close together that they are hard to tell apart, such as on [[June 24]] [[2055]], when the Earth and Moon are less than 20" apart as seen from Jupiter.
Naturally, no one has ever seen a transit of Earth from Jupiter, nor is this likely to happen in any foreseeable future. Nevertheless, the next one will take place on [[July 9]] [[2008]].
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 Earth-Jupiter [[synodic period]] is 398.883 days. It can be calculated using the formula 1/(1/P-1/Q), where P is the [[sidereal year|sidereal orbital period]] of Earth (365.25636 days, not the same as a [[tropical year]]) and Q is the [[orbital period]] of Jupiter (4332.71 days).
Transits of Earth from Jupiter repeat with a pattern of 83 years. That is, the December/January transits recur in a pattern of 12, 12, 12, 47 years, and the June/July transits do likewise.
{| border cellspacing=0 cellpadding=5 align="center"
!colspan="1"|Transits of Earth from Jupiter
|-
| [[July 9]] [[2008]]
|-
| [[January 5]] [[2014]]
|-
| [[January 10]] [[2026]]
|-
| [[June 24]] [[2055]]
|-
| [[June 29]] [[2067]]
|-
| [[December 26]] [[2072]]
|-
| [[July 4]] [[2079]]
|-
| [[December 31]] [[2084]]
|-
| [[July 9]] [[2091]]
|-
| [[January 4]] [[2097]]
|-
| [[January 10]] [[2109]]
|}
==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]
* [[Andrew Crommelin]], ''Ephemeris for physical observations of Jupiter, 1901'', Monthly Notices of the Royal Astronomical Society, '''61''' (1900), 117–118 [http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1900MNRAS..61...94C&db_key=AST&page_ind=23&plate_select=NO&data_type=GIF&type=SCREEN_GIF] (full article: [http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1900MNRAS..61...94C])
==External links==
* [http://space.jpl.nasa.gov/ JPL Solar System Simulator]
[[Category:Astronomical transits]]
[[de:Erddurchgang vom Jupiter]]
[[it:Transito della Terra da Giove]]