As a result, a planet
in such an orbit would have a period of only about 4.3 days.
Although no object
on such an orbit has been detected just yet, there is good reason to expect that they might exist.
Now, planet hunters have realized that all nine planets revolving more than 30 million kilometers from their stars are
following such orbits, says astronomer Geoffrey Marcy of San Francisco State University.
If computer modeling
proves such orbits are stable, it may be only a matter of time before astronomers discover these patterns among the stars.
Planets
with such orbits are also more likely to have greater orbital eccentricity which if not too large can in turn can contribute to non synchronous rotation such as 3:2 or even 2; 1 resonances, as seen in Mercury with an orbital eccentricity of 0.2.
They did a quick calculation to see
if such an orbit could exist stably and pull the comets toward Earth.
After two
such orbits, the engine will fire again on October 19 for 22 minutes, shifting the spacecraft to a 14 - day orbit that goes out to 3.3 million kilometers.
Such an orbit would take around six months to complete.
Such an orbit would take around 250 and 390 days (0.69 to 1.06 years) to complete.
Even if
such an orbit were possible, any Earth - type planets that orbited Aldebaran A during its youth would have been burnt to a cinder by now, and possibly fallen into the star from frictional drag with the giant star's gaseous envelope.