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transit, planetary


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1 The passage of one object across another of larger apparent diameter, such as Mercury or Venus in front of the Sun, or a satellite or its shadow across the face of a planet (see also shadow transit). Mercury and Venus transit the Sun only when they are close to a node of their orbits at inferior conjunction. With Mercury this occurs in early November (ascending node) or early May (descending node), and with Venus in early December (ascending node) or early June (descending node). Transits of Mercury are more common than those of Venus. Forthcoming transits of Mercury are on 2016 May 9, 2019 November 11, 2032 November 13, and 2039 November 7. The next transit of Venus is on 2012 June 5/6.

http://eclipse.gsfc.nasa.gov/transit/transit.html NASA transits website.

http://sohowww.nascom.nasa.gov/hotshots/2006_11_06/

2 The passage of a feature across the central meridian of a planet.

1 The passage of one object across another of larger apparent diameter, such as Mercury or Venus in front of the Sun, or a satellite or its shadow across the face of a planet (see also shadow transit). Mercury and Venus transit the Sun only when they are close to a node of their orbits at inferior conjunction. With Mercury this occurs in early November (ascending node) or early May (descending node), and with Venus in early December (ascending node) or early June (descending node). Transits of Mercury are more common than those of Venus. Forthcoming transits of Mercury are on 2016 May 9, 2019 November 11, 2032 November 13, and 2039 November 7. The next transit of Venus is on 2012 June 5/6.

http://eclipse.gsfc.nasa.gov/transit/transit.html NASA transits website.

http://sohowww.nascom.nasa.gov/hotshots/2006_11_06/

2 The passage of a feature across the central meridian of a planet.

Subjects: Astronomy and Astrophysics.


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