Examples of using Angular diameter in English and their translations into Portuguese
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They are about 6 degrees in angular diameter.
Its apparent angular diameter is about 1 degree.
The parallax is only about a quarter of the angular diameter of the star.
It has an angular diameter of between 8'(rising) and 12' overhead.
The size of Antares may be calculated using its parallax and angular diameter.
The Sun's angular diameter as seen from Mars, by contrast, is about 21.
At the currently accepted distance of 6,100pc, the measured angular diameter corresponds to a radius of 1,200± 150 solar radii.
The measured angular diameter of this star, after correction for limb darkening, is.
Because the distance between the Moon andEarth is very slowly increasing over time, the angular diameter of the Moon is decreasing.
The angular diameter of Jupiter likewise varies from 50.1 to 29.8 arc seconds.
During November transits Mercury has an angular diameter of 10" and these transits occur at the ascending node.
Estimating the sizes of asteroids from observations is difficult due to their irregular shapes, varying albedo,and small angular diameter.
However, it is known that Nix's angular diameter is 3-9 minutes of arc, while Hydra's is 2-7 minutes.
Deimos looks more like a bright star or planet for an observer on Mars, only slightly bigger than Venus looks from Earth;it has an angular diameter of about 2.
These are much larger than the Sun's angular diameter, so total solar eclipses are caused by these moons.
As light feels the local gravitational field, its propagation may be altered bythe presence of inhomogeneities, and so the angular diameter and luminosity distances.
During May transits Mercury has an angular diameter of 12" and take place at the descending node of Mercury's orbit.
By precisely measuring the drop in brightness of a star as it is occulted by the Moon(or the rise in brightness when it reappears), the star's angular diameter can be computed.
This was the first red dwarf star to have its angular diameter measured, with the physical diameter being about 46% of the Sun's radius.
Largest by diameter==Estimating the sizes of asteroids from observations is difficult due to their irregular shapes, varying albedo(reflectivity),and small angular diameter.
Observers at high latitudes(less than 70.4°) would see a noticeably smaller angular diameter for Phobos because they are farther away from it.
The maximum apparent angular diameter will be~2 arcseconds, so that it will be barely resolved by ground-based telescopes not equipped with adaptive optics.
They were able to observe transits of Deimos across the Sun, but at 2' angular diameter, Deimos is about 20 times larger than Mercury's 6.1" angular diameter.
However, since the angular diameter of Deimos is only about 1/10 of the angular diameter of the Sun as seen from Mars, it is more natural to refer to it as a transit.
The transits of Phobos could also be called partialeclipses of the Sun by Phobos, since the angular diameter of Phobos is up to half the angular diameter of the Sun.
Since the angular diameter of the Sun is about half a degree, Venus may appear to pass above or below the Sun by more than 18 solar diameters during an ordinary conjunction.
Observers at high latitudes(but less than 70.4°) will see a noticeably smaller angular diameter for Phobos because they are considerably farther away from it than observers at Mars's equator.
The moon Phobos appears about one third the angular diameter that the full Moon appears from Earth; on the other hand, Deimos appears more or less starlike with a disk barely discernible if at all.
For that purpose, we also show that the combined technique between sunyaev-zel¿dovich effect(sze) and x-ray surface brightness(sx)to measure angular diameter distance(add) of galaxy clusters(gc), dependents on the fine structure constant.
Based on these results,it was made a comparison between the angular diameter distance measurement for an allowed neutrino mass and the value of the distance when the mass is zero.