![]() The conjunction symbol is not used in modern astronomy. The astronomical symbol for conjunction is (Unicode U+260C ☌). Conjunctions between two bright objects close to the ecliptic, such as two bright planets, can be seen with the naked eye. ![]() A conjunction is an apparent phenomenon caused by the observer's perspective: the two objects involved are not actually close to one another in space. Conjunctions involve either two objects in the Solar System or one object in the Solar System and a more distant object, such as a star. A related word, appulse, is the minimum apparent separation in the sky of two astronomical objects. When two objects always appear close to the ecliptic-such as two planets, the Moon and a planet, or the Sun and a planet-this fact implies an apparent close approach between the objects as seen in the sky. In astronomy, a conjunction occurs when two astronomical objects or spacecraft have either the same right ascension or the same ecliptic longitude, usually as observed from Earth.
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