Why is information about the orbit of a meteorite important?
If you were to replace our sun with this star, its outer surface would be located at about the orbit of Jupiter, but it is a variable star and its diameter has been directly measured to vary from about the orbit of Earth to the orbit of Saturn.
Such a region is about equivalent to that between the orbits of Venus and Mars.
Tens of thousands of comets, as well as some thousands of asteroids and asteroidal fragments revolving about the Sun between the orbits of Mars and Jupiter, contain organic molecules.
The brightness of optical images of Fomalhaut b could be due to starlight reflecting off a circumplanetary ring system with a radius between 20 to 40 times that of Jupiter's radius, about the size of the orbits of the Galilean moons.
Then, astronomer Scott Chapman of the California Institute of Technology (Caltech) in Pasadena and his colleagues used the Keck II Telescope in Hawaii to track the orbits of about 5000 of those stars by gauging their motions toward or away from Earth.
Rosetta is today 345 million kilometres from the Sun; at perihelion, on 13 August this year, it will be at about 186 million kilometres, between the orbits of Earth and Mars.
Kepler's laws of planetary motion describe the orbits of objects about the Sun.
