Sentences with phrase «eccentric orbit of»

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.

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.

This otherwise undistinguished satellite of Neptune, moderately lumpy and middling in size, travels on the most eccentric orbit of any moon in the solar system

Not exact matches

Using that as a guide, along with estimates of necessary runoff rates and the duration of valley network formation from other studies, Palumbo showed that model runs in which the Martian orbit was highly eccentric did indeed meet these criteria.

The good news, Marcy is quick to add, is that just 5 % of the hundreds of stars regularly watched by his group are orbited by such eccentric titans.

The suspicion is that the fractures — in some way that is not yet fully understood — connect down to a part of the moon that is being tidally heated by the globe's repeated flexing as it traces its eccentric orbit.

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

This unique structure might be caused by gravitational disturbances of a small moonlet in an eccentric orbit that has apparently criss - crossed the F ring for almost 9 months.

HD 20782 has the most eccentric orbit known, measured at an eccentricity of.96.

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.

In both, tides caused by Europa's eccentric orbit around Jupiter create internal heat that melts the base of the icy crust.

Comets, after all, spend most of their time far from their star and have highly eccentric orbits, which could account for the irregularity of dimming.

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.

When subjected to an «eccentric magnetic field,» the spheres self - assembled and the smaller spheres, attached by virtual hinges, traced rough orbits to one side of their larger partners.

Now, using the method pioneered by Sir Isaac Newton when he determined the mass of Jupiter, Brown and his colleagues have determined that Eris, a far - flung rocky mass with a wildly eccentric orbit, is 27 percent more massive than Pluto.

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

The same force can push dust into highly eccentric orbits, and even blow some of the smaller grains out of the disk entirely.

Titan's eccentric orbit around Saturn generates tides that flex the moon's surface and create tidal heating, which could cause variations to develop in the thickness of the ice shell, Hemingway said.

The radial - velocity variations indicate a highly eccentric orbit with a period of 153.9 days.

A substellar companion at that distance would imply an orbital period of around a year, or it could be in a highly eccentric orbit with a much greater average distance from Proxima.

According to the Sixth Catalog of Orbits of Visual Binaries, Stars A and B move around each other at an average distance of 7.33 AUs (semi-major axis a = 0.58») in a very eccentric (e = 0.43) orbit that takes 19.5 years to complete.

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).

According to the Sixth Catalog of Orbits of Visual Binaries, Stars A and B move around each other at an average distance of 250 AUs (semi-major axis a = 22.289») in a mildly eccentric (e = 0.13) orbit that takes 2,720 years to complete.

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

With a perihelion of 76 AU (more than twice that of Neptune), Sedna is well beyond the reach of the gas giants and unlike other Kuiper Belt Objects, could not be scattered into its highly eccentric orbit from gravitational interactions with Neptune alone.

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.

The discovery of Sedna on a highly eccentric orbit beyond Neptune suggests a perplexing new population of icy bodies residing far outside the Kuiper Belt.

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.

Using precise positional data from the National Science Foundation's Very Long Baseline Array (VLBA) and from optical telescopes, Felix Mirabel, an astrophysicist at the Institute for Astronomy and Space Physics of Argentina and French Atomic Energy Commission, and Irapuan Rodrigues, also of the French Atomic Energy Commission, calculated that Scorpius X-1 is not orbiting the Milky Way's center in step with most other stars, but instead follows an eccentric path far above and below the Galaxy's plane.

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.

Although astronomers have detected other EKOs whose orbits lie mostly 50 AUs, these objects have very eccentric orbits, and almost all eventually move inward to within 38 AUs of the Sun, which place them within Neptune's gravitational reach and so these EKOs are generally thought to have been scattered out to their present orbits by a gravitational slingshot with Neptune to become part of the «Scattered Disk.»

Given that Pluto is currently on the outward - bound leg of its highly eccentric orbit, warming there would be very strange indeed.

The satellite orbits Earth every 48 hours and is in an eccentric orbit (perigee of 7,000 km [4,000 miles] and apogee of 114,000 km [71,000 miles]-RRB- that allows long observations of astronomical objects.

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

The 9.8 years orbit results quite eccentric (e = 0.57), as typical for... ▽ More We have performed RV monitoring of the components of the binary system HD 106515 over about 11 years using the high resolution spectrograph SARG at TNG.

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.

Our orbit is more eccentric than published, but we attribute this to lack of data at the negative peak in the orbit.

What Rhoden's team observed in their study was that during this process, several models predict that Charon's orbit around Pluto could have been highly eccentric, which would have caused severe tides on both celestial bodies, possibly leading to the formation of underground oceans of liquid water, similar to those that probably exist inside Europa.

According to the new Sixth Catalog of Orbits of Visual Binary Stars, Stars A and B have an «average» separation, or semi-major axis, of about 1.22 times the Earth - Sun distance (AU) in an eccentric orbit (e = 0.437), a period of about 2.25 years, and an inclination from the perspective of an observer on Earth of about 112.4 ° (Woitas et al, 2000).

In the absence of this data, Rhoden's team calculated various values about the latter, in order to see how much eccentric would Charon's orbit would have to be for tidal forces to have any significant effect.

Furthermore, they are locked in a mutual synchronous rotation while having an almost circular, no - eccentric orbit, which disfavor the formation of any currently active geological processes on their surfaces or interiors.

While the mystery of KIC 8462852's brightness variations is still far from settled, a new study by a team of astronomers that has utilised NASA's Spitzer Space Telescope suggests that the culprit is most probably a huge swarm of cometary fragments that revolve around the star on highly elongated eccentric 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.

The distance separating Sirius A from its companion varies between 8.1 and 31.5 AUs as the two swing around in a highly eccentric orbit (e = 0.59) that takes 50.1 years to complete (Willem Henrik van den Bos, 1960; in the new Sixth Catalog of Visual Orbits of Binary Stars).

They move in an eccentric orbit (e = 0.497) of about 480 years, so that the two stars get as close as 36 AUs and as far away as 107 AUs.

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