Original Alpha Centauri page

What is this page for?
I made this page in case PlanetStar doesn't like/want the changes I made to the Alpha Centauri system page, so they can just copy all the text on this page, paste it into the actual Alpha Centauri system page, and therefore revert the changes with extreme ease.

Alpha Centauri system is a system comprising of four planets and three stars, located 4.3 s away in the  in the caelregio Simianus. It is the nearest star system to our.

Stellar components
The primary star of this system is Alpha Centauri A, which is the sun-like star, though bigger and brighter than our Sun. Alpha Cen A is richer in metals and older than our own star. The secondary star is Alpha Centauri B, which is an orange K-type star, meaning it is smaller, dimmer and cooler than our Sun. Separation between two stars range from 11.2 AU to 35.6 AU (1.67 to 5.30 Tm) throughout the 80-year orbit. The ternary star in this system is Alpha Centauri C, well known as, which is the nearest individual star to our solar system. It orbits at approximately 15,000 AU or 0.24 light-years from the AB pair, however it is possible that it is not bound to the system if is moving in a path. Alpha Cen C is a dim red dwarf of spectral class M5V-VIe massing one-eighth that of the Sun. This star gives off 600 times less radiation than our sun emits.

Planetary system
Around Alpha Cen A, both planets are rocky/metallic, one is a mid-Earth and one is a super-Earth. Around Alpha Cen B, all four are rocky, one sub-Earth, one mid-Earth, and one super-Earth.

Their orbital periods range from seven days to nine months.

Alpha Centauri Bb
Alpha Centauri Bb (Ixionidae) was the only planet detected in the Alpha Centauri system that is now refuted. This was one of the least massive confirmed planet detected by survey. It massed 1.28 M$⊕$ and sizes 1.18 R$⊕$, corresponding to its density of 4.32 g/cm$3$. The surface gravity was slightly less than Earth's, at 92% the Earth's strength.

Alpha Centauri Bb was tidally locked to the parent star, meaning one hemisphere always faces the star while the other never sees it. The surface temperature was hot, at 1400°F, because the planet orbits so close to the star at just the Earth–Sun distance. The surface of this planet would mostly be covered in lava due to strong caused by parent star's gravitational forces, making it volcanically active.

Alpha Centauri Bc
Alpha Centauri Bc is a sub-Earth in a one-week orbital period. The planet masses a third of that of Earth. This planet is tide-locked to the star with a 7-day period. Its density is low for a rocky world, just half that of Earth's, meaning this planet has only a tiny core made mostly of iron. In response to its lower mass and size, Alpha Cen Bc has lot lower gravity than Earth. If a person weighs 150 lbs. on Earth, a person of same mass would weigh just 62 lbs. on this.

Its surface temperature when facing the star is 1091°F and much of that surface would be covered in lava, but on the side facing away the star, the surface is icy with the temperature of about 300 degrees below zero. So Alpha Cen Bc is a world of fire and ice, since it has no atmosphere capable of redistributing heat.

Alpha Centauri Cb
Alpha Centauri Cb (more commonly known as Proxima Centauri b) is the first planet that was discovered around the star. Despite it orbits 20 times closer to the star than Earth is to the Sun, the planet is in the habitable zone, though it is tidally locked, meaning its rotation and orbital periods are identical at 11.186 days or 268.5 hours. It is 49% more massive than Earth, but its density and gravity are less than Earth's. The planet is barren with small ponds of liquid water on the terminator line.

Alpha Centauri Cc
Alpha Centauri Cc (more commonly known as Proxima Centauri c) is the second planet found orbiting Proxima. It has a mass of 7 earths and it may have rings. It is far too cold to be habitable.

Alpha Centauri Cd
The only unconfirmed planet in the Proxima system, Proxima d was detected in 2019. It is thought to be a small lava world which orbits its star in five days.