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This is a list of the planetary conjunctions visible from Earth between 2005 and 2030.

In astronomy, a conjunction is an event, defined only when using either an equatorial or an ecliptic celestial coordinate system, in which any two astronomical objects (e.g. asteroids, moons, planets, stars) have the same celestial longitude, normally as when observed from the Earth (geocentric).

In the case of a geocentric conjunction of two of the Solar System's planets, since these planets appear to travel "along the same line" (the ecliptic), the two planets appear on Earth as being near one another in the sky during the conjunction.

The conjunctions are listed according to the equatorial coordinate system (in which the celestial longitude is termed right ascension).

The elongation to Sun can determine when and how easily a conjunction will be visible. Those transits with elongation East of the sun are best seen in the morning, and with elongation West of the sun in the evening. This elongation distance must also be great enough that the planets are visible before the sun rises, or after it sets.

2005-2010

2011-2020

2021-2030

References