Asteroid or Comet? In November 1977, Charles Kowal of the Hale Observatories discovered an unusual object orbiting the sun with a 50.7-year period along an orbit whose distance from the sun ranges from 1.3 to 2.8 billion km. Thus, the new object, called Chiron, is closer to the sun than Saturn at perihelion and almost as far as Uranus at aphelion. The estimated diameter of Chiron is between 160 and 640 km. Because comets and asteroids are indistinguishable on the basis of appearance at this distance from the sun, it is not clear at this writing whether Chiron should be classified as a comet or an asteroid.
Mid-90s?
Chiron was discovered in 1977.
What good is a ticket to the good life, if you can't find the entrance?