Tsukapokoru

Tsukapokoru  is an ocean planet which is part of the  Democratic Federation of Species in the Norma Arm. It shares a strange companionship with the planet  Tsukaporo  in which the two do not orbit each other, but merely share exactly the same orbital distance. The pair, at the same time, revolve their home star  Zoyltieus.

Naming
"The handsome and noble warrior Tsukaporo fell in love with the beautiful maiden Tsukapokoru. However, the two were separated by a great river when an evil demon captured Tsukapokoru. However, the demon was merciful and allowed the two to meet every two hundred years, when he would let the river disintegrate into a stream temporarily. This river became known as the Milky Way."

- Ancient Tsuinaron Astrological myth

The name 'Tsukapokoru' comes from the mythical figure with the same name who, in a certain myth whose exact events are stated above, falls in love with the handsome and brave Tsukaporo, hence their similar names. This myth came about because of the depiction of the planets' two-hundred-yearly meeting.

Orbit and Relationship with Tsukaporo
The two planets also share eight moons which transfer from one planet to the other in a meeting of the planets once every two hundred years. That is, t he moons, which, in a time generations before the Space Era, were known collectively as the Tsuka Couple's Children, would be orbiting Tsukaporo for two-hundred-year periods, then Tsukapokoru and Tsukaporo would meet in the rare meeting.

This happens because of the two planets' drastically different orbiting speeds. However, the two never collide, for unknown reasons.

Atmosphere
Tsukapokoru has an atmosphere that can support life, with 10% of it being oxygen.