closest approach

closest approach

[′klō·səst ə′prōch]
(astronomy)
The event that occurs when two planets or other celestial bodies are nearest to each other as they orbit about the sun or other primary.
The place or time of such an event.
References in periodicals archive ?
At closest approach, it will be at a distance of 2.
The term "supermoon" was introduced by American astrologer Richard Nolle, who defined it as "a new or full moon which occurs with the moon at or near (within 90% of) its closest approach to Earth in a given orbit.
Every once in a while, the night of a full moon coincides with the day Earth's only natural satellite makes it closest approach to the planet during its orbit (which is not circular).
These mean that the perigee - the closest approach - and full moon are not always in sync.
A supermoon occurs when a full moon or new moon coincides with the moon's closest approach to Earth, also known as perigee.
For the next five years it will continue travelling towards the inner solar system before reaching its closest approach to the sun just beyond the orbit of Mars.
Neptune is now making the closest approach ever to the Earth, Given the fact that it is the eighth and furthest planet from Earth and the whole solar system.
AN asteroid nicknamed The Rock that could be big enough to devastate much of the UK made its closest approach to Earth in 400 years.
AN asteroid nicknamed "The Rock" that could be big enough to devastate much of the UK is making its closest approach to Earth in 400 years.
At closest approach, the moon will pass within 348,400 kilometres of Earth's surface, about 35,400km closer than average, they added.
After the comet made its closest approach to the sun in August 2015, the fissure grew by several hundred meters and new cracks appeared.
1980 The NASA space probe Voyager I makes its closest approach to Saturn and takes the first images of its rings.