Pluto Crosses Neptune’s Orbit, Ends 20-Year Sunward Period – February 11, 1999

Pluto crosses Neptune's orbit, ending a nearly 20-year period when it was closer to the Sun than the gas giant; Pluto is not expected to interact with Neptune's orbit again until 2231.

Pluto crosses Neptune's orbit, ending a nearly 20-year period when it was closer to the Sun than the gas giant; Pluto is not expected to interact with Neptune's orbit again until 2231.

Date: February 11, 1999

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