Haumea planet

 Haumea ( full detail)

Dwarf planet in the solar system.

Haumea ( minor planet designation 136108 Haumea ) is a likely dwarf planet located beyond Neptune Orbit. It was discovered in 2004 by a term headed by Mike Brown of Caltech at the Palomar observatory in the United States and independently in 2005 by a term headed by Jose Luis Ortiz Moreno at the Sierra Nevada Observatory in Spain, though the latter claim has been contested. On September 17, 2008 , it was named after Haumea, the Hawaiian Goddess of childbirth, under the expectation by the international astronomical Union ( I A U ) that it would prove to be dwarf planet. It is possibly the third largest known trans neptunian object after, Eris and Pluto.

Haumea mass is about one third that of Pluto, and  1/1400 that of Earth. Although its shape has not been directly observed, calculation from its light curve are consistent with it being a jacobi ellipsoid (the shape it would be if it's a dwarf planet), with its major axis twice as long as it's minor. In October 2017, astronomers announced the discovery of a ring system around Haumea, representing the first ring system discovered for a trans neptunian object. Haumea's Gravity was until recently thought to be sufficient for it to have relaxed and into hydrostatic equilibrium, though that in an unclear.  Haumea had been named by dual committee established for bodies expected to dwarf planet, did not mention a discoverer.

Until it was given a permanent name, the Caltech discovery team used the nickname " Santa" among themselves, because they had discovered Haumea on December 28, 2004, just after Christmas. On September 7, 2006, it was numbered and admitted into the official minor planet catalogue as (136108)  2003 EL61.

The proposal by the Ortiz team, Ataecina, did not meet IAU naming requirements,  because the name of chthonic deities were reserved for stably. Haumea has an orbital period of 284 Earth years, a perihelion of 35 AU, and an orbital inclination of 28°. It passed aphelion in early 1992, and is currently more than 50 AU from the Sun. Haumea is the third brightest object in the Kuiper belt.

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