Sentences with phrase «at wide orbits»

The VLT / NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits: II - Survey description, results and performances

The VLT / NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits.

Not exact matches

One nearby example, the bright star Betelgeuse in the constellation Orion, is at least as wide as the orbit of Mars.

NASA's Spaceguard survey program, established in 1998, aims to locate and follow at least 90 percent of the estimated 1,100 asteroids that come within about 30 million miles of Earth's orbit around the sun and that are larger than two - thirds of a mile wide.

Estimated at 2 kilometers wide, the object — named 2003 EH1 — orbits the sun every 5.5 years.

But in 1992 a pair of astronomers turned up 1992 QB1, a body about 200 kilometers wide circling the sun at a distance of about 6.5 billion kilometers, well beyond Neptune's orbit.

To date, 818 asteroids that are at least 1 km wide have been discovered on orbits that could take them close to Earth.

Equations worked out decades ago by Russian engineer Yuri Artsutanov and, independently, by American space scientist Jerome Pearson, found that the ideal tether should be tapered, widest at the geosynchronous orbit altitude of 35,800 kilometers, and narrowest at Earth's surface and at its far end.

Any material works in principle, but even for stainless steel the tether would need to be 1043 times wider at geosynchronous orbit than at the ground.

Having demonstrated the efficacy of the approach on wide - orbit planets, Serabyn says he would like to apply the concept at larger telescopes to seek out worlds closer to their stars.

Barman took a second look at Hubble Space Telescope data collected by Harvard astronomers, who measured the light coming from HD 209458 b as it reached the widest part of its 3.5 - day orbit around its star.

And then there's Roger Angel, an astronomer and optical scientist at the University of Arizona who, working under a NASA grant, seeks to launch trillions of two - foot - wide disks of transparent film into orbit around Earth, a million miles up.

But if approved, K2 will be looking at a much more diverse region of sky with a wide range of astronomical and astrophysical phenomena: planets with short orbits around cooler stars (which, if in their star's habitable zone, could still harbor water); young, still - forming proto - stars, which could provide insight into star and planet formation; and supernovae and galaxy clusters.

The discovery of 54 Piscium b indicates that the highly elliptical orbits of close - in planets found around other stars could be the result of orbital perturbations by low - mass companions at wide separations from their host stars (more).

We used NaCo at VLT to explore t... ▽ More In anticipation of the VLT / SPHERE planet imager guaranteed time programs, we have conducted a preparatory survey of 86 stars between 2009 and 2013 in order to identify new faint comoving companions to ultimately carry out a comprehensive analysis of the occurence of giant planets and brown dwarf companions at wide (10 - 2000 AU) orbits around young, solar - type stars.

The project, led by principal investigator George Ricker, a senior research scientist at MKI, will use an array of wide - field cameras to perform an all - sky survey to discover transiting exoplanets, ranging from Earth - sized planets to gas giants, in orbit around the brightest stars in the sun's neighborhood.

The project, led by principal investigator George Ricker, a senior research scientist at the MIT Kavli Institute for Astrophysics and Space Research (MKI) will use an array of wide - field cameras to perform an all - sky survey to discover transiting exoplanets, ranging from Earth - sized planets to gas giants, in orbit around the brightest stars in the sun's neighborhood.

We aim at investigating correlations between the host star's mass and the presence of wide - orbit giant planets, and at providing new observational constraints on planetary formation models.

Only discovered sixteen days ago, the 400 - metre - wide asteroid will fly past Earth at a safe distance slightly farther than the Moon's orbit on 31 October at 5:05 pm GMT.

On the other hand, the wide binary pairs Aab and Bab are separated by an «average» distance of about 21.2 AUs (of a semi-major axis of 2.533» at 27.3 ly) in an elliptical orbit (e = 0.412) of 59.9 years, so that the two star pairs get as close as 12.5 AUs and as far away as 39.9 AUs (Wulff Dieter Heintz, 1996; revising earlier earlier estimates, including Mason et al, 1995).

The Mars Reconnaissance Orbiter (MRO) Context Camera (CTX) is currently orbiting Mars and acquring grayscale (black & white) images at 6 meters per pixel scale over a swath 30 kilometers wide.

The comparisons we have carried out thus far (see above) indicate that the 5 - AU - wide gap's observed structure could be generated by a sub-Jupiter-mass planet orbiting within the disk at a position roughly equivalent to that of Uranus in our solar system.