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Astronomers have tentatively tracked the object "Oumuamua" – the first confirmed interstellar rock visitor to our solar system – to potential four stars. Using new data from the European Space Agency's (ESA) Gaia space probe, they now think they know where the 400-meter object, very long, began its journey at least a million years ago .
«Oumuamua on the outskirts of the solar system (concept of artist)Credit: Wikipedia
Oumuamua probably has some similarity to a comet – with ice sufficiently heated by sunlight to produce a gas that, in turn, will accelerate the source object like an extremely weak rocket motor, reported the Max Institute. Planck for astronomy. The Institute notes that, although low – outgassing was not visible on the images as it was about near-sun comets – it's too big to be ignored when the continuation of the orbit.
This new study takes into account the evolution of Oumuamua's orbit as the object passed near the Sun, providing more accurate estimates of the origin of the object and its speed on our planet. solar system.
The team, led by Coryn Bailer-Jones at the Institute, determined that "Oumuamua" had approached HIP 3757, a reddish dwarf star in the constellation Cetus, at 1.96 light years ago, there are at least a million years.
The team used the most recent data from the Gaia satellite of the European Space Agency to better determine the stars encountered en route to our solar system. The team too used Gaia's data to determine which stars he might have encountered en route to our solar system.
Bailer-Jones and his colleagues then determined a somewhat "smoothed" version of the gravitational influence of all matter in our Milky Way galaxy to incorporate in their calculations what is called the galactic gravitational potential. .
We thought that object was most likely ejected very early in the life of his parent solar system . The debate is about how that happened.
The simplest explanation is simply that it has been scattered out of its original system by gravitational aggression by a giant planet.
The problem is that none of the four stars who are home candidates for Oumuamua are known to have known planets. That does not mean they do not do it, but only time will tell if it's really a plausible theory.
Other ideas about why the object was ejected include the instability of a binary star system and even another unattached star making a pass near the Oumuamua docking system, causing sending the object to our Sun.
As the object is no longer observable near the Earth, as Bailer-Jones said, his team can no longer characterize "Oumuamua" much better than we have already done.
"We do not have a lot of information to help us tell if a particular star" matches "Oumuamua, or they would have compatible ages," Bailer-Jones said.
What we do know, however, is what I mentioned earlier.
Oumuamua is now on a distant trajectory of the solar system, which is expected to overtake Saturn's orbit in January 2019 and move towards the constellation Pegasus.
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Astronomers have tentatively tracked the object "Oumuamua" – the first confirmed interstellar rock visitor to our solar system – to potential four stars. Using new data from the European Space Agency's (ESA) Gaia space probe, they now think they know where the 400-meter object, very long, began its journey at least a million years ago .
«Oumuamua on the outskirts of the solar system (concept of artist)Credit: Wikipedia
Oumuamua probably has some similarity to a comet – with ice sufficiently heated by sunlight to produce a gas that, in turn, will accelerate the source object like an extremely weak rocket motor, reported the Max Institute. Planck for astronomy. The Institute notes that, although low – outgassing was not visible on the images as it was about near-sun comets – it's too big to be ignored when the continuation of the orbit.
This new study takes into account the evolution of Oumuamua's orbit as the object passed near the Sun, providing more accurate estimates of the origin of the object and its speed on our planet. solar system.
The team, led by Coryn Bailer-Jones at the Institute, determined that "Oumuamua" had approached HIP 3757, a reddish dwarf star in the constellation Cetus, at 1.96 light years ago, there are at least a million years.
The team used the most recent data from the Gaia satellite of the European Space Agency to better determine the stars encountered en route to our solar system. The team too used Gaia's data to determine which stars he might have encountered en route to our solar system.
Bailer-Jones and his colleagues then determined a somewhat "smoothed" version of the gravitational influence of all matter in our Milky Way galaxy to incorporate in their calculations what is called the galactic gravitational potential. .
We thought that object was most likely ejected very early in the life of his parent solar system . The debate is about how that happened.
The simplest explanation is simply that it has been scattered out of its original system by gravitational aggression by a giant planet.
The problem is that none of the four stars who are home candidates for Oumuamua are known to have known planets. That does not mean they do not do it, but only time will tell if it's really a plausible theory.
Other ideas about why the object was ejected include the instability of a binary star system and even another unattached star making a pass near the Oumuamua docking system, causing sending the object to our Sun.
As the object is no longer observable near the Earth, as Bailer-Jones said, his team can no longer characterize "Oumuamua" much better than we have already done.
"We do not have a lot of information to help us tell if a particular star" matches "Oumuamua, or they would have compatible ages," Bailer-Jones said.
What we do know, however, is what I mentioned earlier.
Oumuamua is now on a distant trajectory of the solar system, which is expected to overtake Saturn's orbit in January 2019 and move towards the constellation Pegasus.
