A team of researchers has examined the data collected on Oumuamua trying to determine where this asteroid is coming from. Accordingly, Oumuamua interstellar asteroid could come from a binary system.
Oumuamua has been observed for the first time in October 2017.
Oumuamua is a totally different type of asteroid
Oumuamua has been the first interstellar asteroid that has ever been observed by astronomers. Consequently, Oumuamua gave life to many theories and some people even considered it an extraterrestrial spacecraft coming towards our planet.
Indeed, this interstellar asteroid has a strange shape which resembles a cylinder of several hundred meters long which is revolving around its own axis.
According to a study conducted by Fabo Feng, an astronomer from the University of Hertfordshire, Oumuamua would come from a group of stars belonging to the Pleiades but scientists don’t know much about that group.
Determined to find, once and for all, the origins of this space object, another group of astronomers has recently conducted a study trying to discover Oumuamua’s origins and how its ‘home’ system was able to expel it.
Not all systems are able to expel asteroids outside the gravitational pull of their star
According to the observations made in recent years, very few systems are actually able to expel a space object such as Oumuamua.
To succeed that, the systems should hold at least one planet as big as Saturn and, therefore, the planet’s gravitational influence could indeed tear a space object like Oumuamua from the gravitational attraction of that system’s star.
However, as these researchers investigated further, they found that binary systems (systems with two stars) were quite suitable for expelling objects such as Oumuamua.
After conducting a simulation, the team discovered that 36% of the binary systems were capable of expelling asteroids towards another system.
In this context, the researchers deduced that more than 75% of the asteroids from outside our Solar System are coming from such binary systems. Therefore, the scientists concluded that Oumuamua interstellar asteroid could come from a binary system, too.