Astronomical Unit

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  • noun

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a unit of length used for distances within the solar system

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The latest discovery is of a third star in the system, which orbits the primary star from a distance of 28 astronomical units -- close enough to have influenced the hot Jupiter's development and final orbit.
All the objects beyond 150 astronomical units come closest to the sun, a point known as perihelion, at nearly the same time that they cross the plane of the solar system.
0 astronomical unit (au) from both the Earth and Sun and with B = 7[degrees] and at a solar phase angle of [alpha].
Currently, the space object is at a distance from the sun of 97 astronomical units (AU), or the average distance from Earth to the sun.
Sedna is currently 86 astronomical units from the sun - one unit being the distance between the sun and the Earth.
Shows distance from sun in Astronomical Units (AU) 1AU = Sun to Earth 100 million miles Neptune = 3 billion miles Sedna = 6 billion milesEarth 12,756km Largest of the inner planet s Moon 3476kmKuiper Belt Region of icy debris 30 to 100 AU from the SunHow Sedna compares (diameter)Mercury 4878km Smallest inner planetSPACED OUT: Sedna is located 6 billion miles from the EarthPluto 2280kmThe discovery of Sedna, a Pluto-sized object found by NASA's Spitzer Space Telescope, orbiting the Sun at a distance of about 6 billion miles looks set to renew debate over Pluto's right to planet statusSedna Similar in size to Pluto
Recently, astronomers reported the surprising discovery of a very large diameter Kuiper Belt planetoid -- (90377) Sedna -- on a distant, 12,500-year-long, eccentric orbit centered approximately 500 astronomical units from the Sun.
According to a NASA news release, "no object the size of Saturn or larger exists out to a distance of 10,000 astronomical units (AU), and no object larger than Jupiter exists out to 26,000 AU.
This recent study, which involved an examination of WISE data covering the entire sky in infrared light, found no object the size of Saturn or larger exists out to a distance of 10,000 astronomical units (au), and no object larger than Jupiter exists out to 26,000 au.
The size of the hot core is as large as 800 times 300 astronomical units (au, 1 au equals to the mean distance of the Sun and Earth; 150 million km).
02999 Key: Distance: The closest approach (in astronomical units, AU) to the Earth.
Previously, astronomers knew that planets could form in exceptionally wide binary systems, in which stars are 1,000 times farther apart than the distance between Earth and the sun, or 1,000 astronomical units.
Instead, the images showed lots of dust hovering around the white dwarf, between 35 and 150 astronomical units (AU) away.
mag] is the measured magnitude for filter X, r and d are the Saturn-Earth and Saturn-Sun distances in astronomical units, k is the fraction of Saturn + rings that is illuminated by the Sun as seen from the Earth; k is computed from:
The seeds generally weigh between 5 and 25 times the mass of the Sun, and each spans only a few thousand astronomical units (the average Earth-Sun distance).