Can a planet orbit Alpha Centauri AB despite the three-body problem? New research shows that there are some possible stable orbits.
This image of the sky around the bright star Alpha Centauri AB also shows the much fainter red dwarf star, Proxima Centauri, the closest star to the Solar System. The picture was created from pictures forming part of the Digitized Sky Survey 2. The blue halo around Alpha Centauri AB is an artifact of the photographic process, the star is really pale yellow in colour like the Sun.
“The three-body problem, which seeks stable orbit configurations among gravitating bodies, is a longstanding challenge in celestial mechanics,” Feng writes. Feng examines ? Centauri AB, our nearest binary neighbour, to understand if the system could host a super Jupiter and what orbit the giant planet could follow.
There are some solutions to the three-body problem if one of the bodies has a negligible mass compared to the other two. ? Centauri AB is a pair of Sun-like stars. ? Centauri A is aThe study compares the ? Centauri AB system with a similar star system named GJ65AB . It’s a binary pairis a pair of M-dwarfs, the comparison is still valuable because it “shares similar mass ratios and orbital eccentricities,” Feng writes. Gliese 65 is also close at only about 8.8 light-years from Earth.
au, which contains all the stable orbits for ? ranging from 0 to 0.5 to ~0.35 au, which contains all the stable orbits for ? ranging from 0 to 0.5,” Feng explains. Image Credit: Feng 2024. Of course, none of this means there is a planet there. It just shows that a potential stable orbit is available.
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