On (star)

On is a Class F main-sequence star located in outer section 7 of the galaxy, the mass is about 1.1 M☉, the surface temperature is about 6,200K, the luminosity is about 1.57 L☉, it is estimated that its total main sequence lifetime is roughly 7.88 billion years.

On is a life-supporting star, it is the star that the planet Ptogn revolves around.

Planetary System
There are six planets revolving On, the first one is a small rocket planet, it is the smallest planet of the On star system, the second one is the planet Ptogn, the third one is another rocky planet, which also hosts live and has two sizable and spherical moons, the fourth, the fifth and the outermost planets are gas planets, and the fourth planet is the largest planet of the On star system, it is 1.5 times as heavy as Jupiter.

Between the three rocky planets and the three gas planets, there's an asteroid belt.