Examples of using Angular diameter in English and their translations into Vietnamese
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The parallax is only about a quarter of the angular diameter of the star.
The angular diameter of this star has been measured using the CHARA array to 2% accuracy.
Then, knowing the apparent magnitude at these points in time the angular diameter can be calculated.
It is a semiregular variable and its angular diameter has been measured at about 6992484813681109537♠10 mas.
Advantages: twisted steel structures increase tension, appearance, greatly reduce the cost of capital; angular diameter accuracy.
From this distance, the Sun's angular diameter is reduced to one and a quarter arcminutes across.
first star(after the Sun) to have its angular diameter measured.
Its redshift of 0.004837 gives an angular diameter distance of 21.501 megaparsecs, or approximately 70 million light-years.[2].
The angular diameter of the Sun, from a distance of one light-year, is 0.03″, that of Earth 0.0003″.
For example, the angular diameter of the Sun, when seen from the surface of Earth is approximately 0.53°.
For comparison, the mean angular diameter of the Moon as viewed from Earth is 1888", or 31' 28".
And with the angular diameter distance D A{\displaystyle D_{A}} by the Etherington's reciprocity theorem.
The angular diameter of the Sun, from a distance of one light-year, is 0.03″, and that of Earth 0.0003″.
two other metrics are needed: the star's angular diameter and its distance from Earth.
Angular diameter measurements can be combined with absolute observed fluxes to derive an accurate effective temperature, about 3,800 K for 119 Tauri.
The angular diameter of the Sun, from a distance of one light year, is 0.03", of the Earth 0.0003".
However, for most stars the angular diameter or parallax, or both, are far below our ability to measure with any certainty.
The angular diameter of Earth's orbit around the Sun, from a distance of one parsec, is 2"(two arcseconds).
The angular diameter of Earth's orbit around the Sun, from a distance of one parsec, is 1″(one arcsecond).
Because of the proximity of this star, its angular diameter can be measured directly, yielding a diameter one-seventh that of the Sun.