noun. The point in an orbit around the planet Jupiter where the orbiting body is closest to the planet.

noun. The point in the orbit of any onr of Jupiter's satellites where it comes nearest to the planet.

noun. periapsis in orbit around Jupiter

"The craft is due to enter an elongated orbit about Jupiter, taking 11 days to loop within 4,300 km of Jupiter's equatorial cloud-tops at its low-point, or perijove, and a high-point, or apojove, some 2.7 million km further out, beyond the orbit of Callisto which is the farthest of Jupiter's four main moons."

periapsis  point of periapsis