Sentences with phrase «eccentric orbit of planet»

However, the development of an Earth - like planet in this zone could have been disrupted by the eccentric orbit of planet b. Astronomers would find it very difficult to detect an Earth - type planet in the water zone of this star using present methods.

Not exact matches

Another surprise is that a number of these big planets are on fairly eccentric orbits, not circular like those of Jupiter and Earth.

An earlier observation of HD 20782 suggested that the planet might have an extremely eccentric orbit.

It has an eccentric orbit that is highly inclined with respect to the planets and takes it closer to the Sun than Neptune during a portion of its orbit.

It orbits around the star 70 Virginis in a highly eccentric, or oval, path quite unlike those of the familiar planets.

The only known transiting planet with a comparably long orbit, called HD 80606 b, has an extremely eccentric orbit; the distance between HD 80606 b and its star varies greatly throughout the planet's orbit, driving temperature changes of several hundred degrees in a matter of hours.

None resemble the former ninth planet, which also has a distinctly eccentric, or elliptical, orbit that crosses that of Neptune.

However, the inner, eccentric orbit of a giant planetary companion «b» recently discovered around 54 Piscium would probably disturb the orbit of such an Earth - type planet.

The Fomalhaut team led by Paul Kalas (University of California, Berkeley) considers this circumstantial evidence that there may be other planet - like bodies in the system that gravitationally disrupted Fomalhaut b to place it in such a highly eccentric orbit.

At the January 2002, 199th Meeting of the American Astronomical Society in Washington, DC, two teams of astronomers announced that the cold dust in Vega's circumstellar disk is at least partly gathered into large clumps, in a characteristic shape that suggests the gravitational influence of a giant planet in an eccentric orbit (Abstracts for sessions 66.04 and 66.05, and CfA press release).

We show that a giant planet on a sufficiently eccentric orbit can excite extreme eccentricity oscillations in the orbit of a habitable terrestrial planet.

In particular, I will focus on planets on eccentric orbits, not only because typical exoplanetary systems have been found to contain these, but also because their interactions with debris disks theoretically facilitates the transport of icy bodies within the habitable zone of planetary systems.

A portion of the dwarf planet Pluto's highly eccentric orbit brings it nearer to the Sun than Neptune, which has a nearly circular orbit.

We find that this standard ansatz provides a reasonable lower bound on the outer boundary of the habitable zone, but the influence of obliquity and ocean fraction can be profound in the context of planets on eccentric orbits.

The same data can argue for different numbers of planets depending on whether you assume eccentric (highly elliptical) orbits or nearly circular ones.

That cluster is also devoid of the heavy chemical elements thought necessary to evolve a planet.8 At least 30 separate planets each orbit a pair of suns whose constantly changing positions would disrupt any slow evolution of a planet.9 One planet has been repeatedly observed eclipsing each of the eccentric binary stars it orbits.

The orbit of object «b» around 79 Ceti is only mildly eccentric, but may still be more elliptical than that of any planet in the Solar System other than Pluto.

A comparison of stellar densities from asteroseismology with densities derived from transit models in Batalha et al. assuming circular orbits shows significant disagreement for more than half of the sample due to systematics in the modeled impact parameters, or due to planet candidates which may be in eccentric orbits.

On March 26, 2014, astronomers announced the discovery of another dwarf planet in a highly eccentric orbit like Sedna.

Now, remember that we postulated a very eccentric orbit, this means that the tidal effect will vary greatly and be much larger when the planet is closest to the star, hence if tides can interfere with or perhaps even control generation of star spots, then the generation of the activity would be synchronized with the orbital period of the star.

It therefore seems likely that exotic cases of highly eccentric orbits may be prominent in other solar systems, where various gaseous planets are known to exhibit large orbital fluctuations.