The orbit of Comet Väisälä resembles that of many centaurs, and is therefore unstable over thousands of years due to gravitational interactions with the gas giant Jupiter. One such close approach, 0.41 AU in December 31, 1961, increased its perihelion distance from 1.74 AU to 1.87 AU and increased its orbital period from 10.46 to 11.28 years. On September 21, 1973, an approach of Jupiter 1 AU away decreased perihelion distance from 1.87 AU to 1.80 AU decreased orbital period from 11.28 to 10.88 years. Väisälä will make one more close approach in the 21st century, but it will have a minimal effect. However, in the year 2127, the comet will make a close approach of only 0.096 AU from Jupiter, and reduce perihelion to 1.4 AU.