In the far reaches of the solar system, beyond Neptune, there is a minor planet orbiting the sun in a sea of icy debris.

Humans have known about the reddish, round object for more than a decade. Since 2007, scientists have estimated that it has a diameter of 775 miles — about half the size of Pluto — and most likely has methane on its surface.

But they still don’t know what to call it.

This week, the astronomers who discovered the minor planet said they wanted the public to weigh in on the chosen name. Offering up three options to choose from, they invited anyone to vote on the name that they will eventually submit to the International Astronomical Union, which must approve the official name.

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Using data from the union’s Minor Planet Center, the astronomers who discovered the minor planet, which is currently referred to as 2007 OR10, estimate that it is the largest unnamed world in our solar system. The group has designated a total of nearly 525,000 minor planets in our solar system.