Neptune: Timeline

1483   Orbit ORBit

ORBit is a CORBA [i] compliant Object Request Broker [i]. ... 

al calculations suggest that on this day Pluto Pluto

Pluto is the second-largest known dwarf planet [i] in the solar system [i]. ... 

 moved inside Neptune's orbit until July 23, 1503.

1503   Orbital calculations suggest that on this day Pluto Pluto

Pluto is the second-largest known dwarf planet [i] in the solar system [i]. ... 

 moved outside Neptune's orbit, remaining there for 233 years.

1735   Mathematical calculations suggest it was on this day that Pluto Pluto

Pluto is the second-largest known dwarf planet [i] in the solar system [i]. ... 

 moved closer to the Sun Sun

|+ The Sun   |+ |- ... 

 than Neptune for the last time before 1979.

1979   Pluto Pluto

Pluto is the second-largest known dwarf planet [i] in the solar system [i]. ... 

 moves inside Neptune's orbit for the first time since either was known to scien

1989   Voyager II passes the planet Neptune and its moon Triton.

1999   Pluto Pluto

Pluto is the second-largest known dwarf planet [i] in the solar system [i]. ... 

, a dwarf planet with an eccentric orbit, moves further from the Sun Sun

|+ The Sun   |+ |- ... 

 than Neptune. It had been nearer than Neptune since 1979, and will become again in ''2231''.