And this is no run of the mill dwarf planet, it is the third largest dwarf planet ever seen in our solar system!
Dwarf planets are usually found much farther from Earth - in the depths beyond Neptune.
Solar wind is the plasma that is expelled from the sun into the solar system at a rate of 100 million miles per hour.
Since it's so far from the sun - an average of about 3.7 billion miles, the farthest planet in the solar system - and because it's the smallest, scientists thought Pluto's gravity would not be strong enough to hold heavy ions in its extended atmosphere.
The astronomers found the dwarf planet to be "quite dark and rotating more slowly than nearly any other body orbiting our sun", taking close to 45 hours to complete its daily spin. Before NASA's New Horizons blew us away with pictures of Pluto, the best we had was this fuzzy image from the Hubble Space Telescope.
So how did 2007 OR10 hide in plain sight for so long?
Now that we know a little more about 2007 OR10, it's probably time that it be given a more catchy name.
The new research paired infrared readings collected by Herschel with visible light data harvested by the Kepler spacecraft, which was tasked with observing 2007 OR10 for a continuous period of 19 days in late 2014. It is bigger than three other dwarf planets namely Haumea, Makemake, and Ceres.
As per the research paper published by the study team, "Dwarf planets tend to be a mysterious bunch". By combining data from two space observatories, it was found that a large dwarf planet called 2007 OR10 has been hiding out in our solar system, and - here's the kicker - it needs a name.
While the object was estimated to be 795 miles (1,280 km) in diameter, scientists could not determine its rotation, meaning they were limited in terms of constraining both its brightness and size.
According to the new measurements, 2007 OR10 is approximately 155 miles (250 kilometers) larger than previously thought. "The hope is to register many more, to find patterns", says Barentsen.
"K2 has made yet another important contribution in revising the size estimate of 2007 OR10".
"It's thrilling to tease out details like this about a distant, new world-especially since it has such an exceptionally dark and reddish surface for its size", Pal emphasized.
"Comparing the solar wind-Pluto interaction to the solar wind-interaction for other planets and bodies is interesting because the physical conditions are different for each, and the dominant physical processes depend on those conditions", said co-author Heather Elliott.
Without this key variable, the light detected by a telescope could lead to incorrect estimations of a planetoid's size, as was the case with 2007 OR10.
Researchers have known a planet was out there since 2007, but they vastly underestimated just how big it is. Usually dwarf planets are named after a certain characteristic, but astronomers didn't know enough about 2007 OR10 to officially name it until now, according to Meg Schwamb, who was one of the astronomers to identify the world in 2007 during a survey. They're icy, but they are most certainly not drab. The International Astronomical Union (IAU) - which acts as the governing body on these matters - requires that a space object's name reflects its characteristics. "I think we're coming to a point where we can give 2007 OR10 its rightful name".