Makemake (Dwarf Planet): Makemake Facts, Diameter, Moon & Atmosphere

makemake facts

Five dwarf planets are discovered in our solar system till now. They are Pluto, Eris, Ceres, Haumea, and Makemake. Although, some scientists believe that there are more than 50 dwarf planets to be discovered in the solar system.

Michael E. Brown and his team (Chad Trujillo and David Rabinowitz) discovered Makemake on 31 March 2005. After three years of its discovery, International Astronomical Union (IAU) recognized it as a dwarf planet. MK2 is the only known moon of the dwarf planet Makemake. Below are some interesting Makemake facts and information.

Makemake Facts and Information

No. of moons One
Approx. Diameter 1430 Km
Atmosphere Methane, Ethane and possibly Nitrogen
Date of Discovery March 31, 2005
Length of Day Approximately 22 hours 30 minutes
Length of Year 305 Earth years
Average Temperature Minus 243-degree centigrade

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This short two minutes video reveal some interesting Makemake facts. Go ahead and enjoy watching it!

Makemake Diameter

Makemake is perhaps the second smallest dwarf planet after Ceres. Its diameter is approximately two-thirds that of Pluto. In Kilometer and miles, It is approximately 1430 Km or 888 Miles. Which is less than half the diameter of our moon.


It has only one known moon named S/2015 (136272) 1. Its nickname is MK2, as suggested by the discovery team. The discovery team used Hubble space telescope in the discovery of MK2 and announced it on 26 April 2016. Its estimated diameter is 175 Km or 110 miles.


Although, scientists thought that it would have an atmosphere similar to that of Pluto’s. But a recent observation showed that it mostly lacks a gas envelope. If there is an atmosphere, it would most likely be Methane and Ethane. It may also contain Nitrogen. If Nitrogen is present on its surface then it would constitute a major part of its atmosphere. Since it has less force of gravity, there are chances that it had lost Nitrogen from its surface.

Mike Brown words

“We consider the naming of objects in the solar system very carefully,” said Mike Brown, part of the discovery team. “Makemake’s surface is covered with large amounts of almost pure methane ice, which is scientifically fascinating, but really not easily relatable to terrestrial mythology. Suddenly, it dawned on me: the island of Rapa Nui. Why hadn’t I thought of this before? I wasn’t familiar with the mythology of the island so I had to look it up, and I found Makemake, the chief god, the creator of humanity, and the god of fertility. I am partial to fertility gods; Eris, Makemake, and (Haumea) were all discovered as my wife was pregnant with our daughter. I have the distinct memory of feeling this fertile abundance pouring out of the entire universe. Makemake was part of that.” Source : NASA

Other dwarf planets of our solar system:

Eris (Dwarf Planet): Eris Facts and its astrology

Ceres: The strangest dwarf planet with an amazing history!

Haumea (Dwarf Planet): One of the fastest spinning objects, guess its length of day!?!

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