jan 28, 1619 - Pluto
Description:
1)has 5 moons2) is a dwarf planet
3) has a rotational period of 153.3 hours
4) has a revolutionary period of 248 earth days
5)the hottest temperature is -223 degrees celsius and the coldest temperature is -233 degrees celsius
6)is 39.53 AU from the Sun
7)was considered a planet
Added to timeline:
Date:
jan 28, 1619
Now
~ 407 years ago