List of nearest stars and brown dwarfs and Magnitude (astronomy)

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Difference between List of nearest stars and brown dwarfs and Magnitude (astronomy)

List of nearest stars and brown dwarfs vs. Magnitude (astronomy)

The following two lists include all the known stars and brown dwarfs that are within of the Sun, or were/will be within in the astronomically near past or future. In astronomy, magnitude is a logarithmic measure of the brightness of an object in a defined passband, often in the visible or infrared spectrum, but sometimes across all wavelengths.

Absolute magnitude

Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.

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Alpha Centauri

Alpha Centauri (α Centauri, abbreviated Alf Cen or α Cen) is the star system closest to the Solar System, being from the Sun.

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Antares

Antares, also designated Alpha Scorpii (α Scorpii, abbreviated Alpha Sco, α Sco), is on average the fifteenth-brightest star in the night sky, and the brightest star in the constellation of Scorpius.

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Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

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Astronomical unit

The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.

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Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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List of brightest stars

This is a list of the brightest naked eye stars to +2.50 magnitude, as determined by their maximum, total, or combined apparent visual magnitudes as seen from Earth.

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Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.

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Parsec

The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.

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Procyon

Procyon, also designated Alpha Canis Minoris (α Canis Minoris, abbreviated Alpha CMi, α CMi), is the brightest star in the constellation of Canis Minor.

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Proxima Centauri

Proxima Centauri, or Alpha Centauri C, is a red dwarf, a small low-mass star, about from the Sun in the constellation of Centaurus.

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Sirius

Sirius (a romanization of Greek Σείριος, Seirios,."glowing" or "scorching") is a star system and the brightest star in the Earth's night sky.

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Stellar parallax

Stellar parallax is the apparent shift of position of any nearby star (or other object) against the background of distant objects.

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Sun

The Sun is the star at the center of the Solar System.

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UBV photometric system

The UBV photometric system (Ultraviolet, Blue, Visual), also called the Johnson system (or Johnson-Morgan system), is a wide band photometric system for classifying stars according to their colors.

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Visible spectrum

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.

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