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18 Scorpii

Index 18 Scorpii

18 Scorpii is a solitary star located at a distance of some from Earth at the northern edge of the Scorpius constellation. [1]

37 relations: Apparent magnitude, Asteroseismology, Astronomical interferometer, Bortle scale, Catalog of Nearby Habitable Systems, Corona, Debris disk, Earth, Effective temperature, Epoch (astronomy), European Southern Observatory, Gliese Catalogue of Nearby Stars, Henry Draper Catalogue, HIP 56948, Hipparcos, Infrared excess, Life, Main sequence, Margaret Turnbull, Metallicity, Monthly Notices of the Royal Astronomical Society, Nuclear fusion, Photometry (astronomy), Scorpius, Solar analog, Solar mass, Solar radius, Star, Stellar atmosphere, Stellar classification, Sun, The Astronomy and Astrophysics Review, The Astrophysical Journal, Tucson, Arizona, University of Arizona, X-ray astronomy, Zeeman–Doppler imaging.

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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Asteroseismology

Asteroseismology or astroseismology is the study of oscillations in stars.

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Astronomical interferometer

An astronomical interferometer is an array of separate telescopes, mirror segments, or radio telescope antennas that work together as a single telescope to provide higher resolution images of astronomical objects such as stars, nebulas and galaxies by means of interferometry.

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Bortle scale

The Bortle scale is a nine-level numeric scale that measures the night sky's brightness of a particular location.

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Catalog of Nearby Habitable Systems

The Catalog of Nearby Habitable Systems (HabCat) is a catalogue of star systems which conceivably have habitable planets.

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Corona

A corona (Latin, 'crown') is an aura of plasma that surrounds the Sun and other stars.

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Debris disk

A debris disk is a circumstellar disk of dust and debris in orbit around a star.

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Effective temperature

The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.

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Epoch (astronomy)

In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.

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European Southern Observatory

The European Southern Observatory (ESO) is a 15-nation intergovernmental research organization for ground-based astronomy.

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Gliese Catalogue of Nearby Stars

The Gliese Catalogue of Nearby Stars is a modern star catalogue of stars located within 25 parsecs (81.54 ly) of the Earth.

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Henry Draper Catalogue

The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars.

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HIP 56948

HIP 56948 (also known as HD 101364) is a solar twin star of type G5V.

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Hipparcos

Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.

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Infrared excess

An infrared excess is a measurement of an astronomical source, typically a star, that in their spectral energy distribution has a greater measured infrared flux than expected by assuming the star is a blackbody radiator.

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Life

Life is a characteristic that distinguishes physical entities that do have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased, or because they never had such functions and are classified as inanimate.

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Main sequence

In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.

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Margaret Turnbull

Margaret Carol Turnbull is an American astronomer.

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Metallicity

In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.

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Monthly Notices of the Royal Astronomical Society

Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.

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Nuclear fusion

In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).

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Photometry (astronomy)

Photometry is a technique of astronomy concerned with measuring the flux, or intensity of an astronomical object's electromagnetic radiation.

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Scorpius

Scorpius is one of the constellations of the zodiac.

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Solar analog

Solar-type star, solar analogs (also analogues), and solar twins are stars that are particularly similar to the Sun.

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Solar mass

The solar mass is a standard unit of mass in astronomy, equal to approximately.

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Solar radius

Solar radius is a unit of distance used to express the size of stars in astronomy.

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Star

A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

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Stellar atmosphere

The stellar atmosphere is the outer region of the volume of a star, lying above the stellar core, radiation zone and convection zone.

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Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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Sun

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

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The Astronomy and Astrophysics Review

The Astronomy and Astrophysics Review is a peer-reviewed scientific journal that is published quarterly by Springer Science+Business Media.

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The Astrophysical Journal

The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.

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Tucson, Arizona

Tucson is a city and the county seat of Pima County, Arizona, United States, and home to the University of Arizona.

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University of Arizona

The University of Arizona (also referred to as U of A, UA, or Arizona) is a public research university in Tucson, Arizona.

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X-ray astronomy

X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects.

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Zeeman–Doppler imaging

In astrophysics, Zeeman–Doppler imaging is a tomographic technique dedicated to the cartography of stellar magnetic fields, as well as surface brightness and temperature distributions.

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Redirects here:

18 Sco, GJ 616, GJ616, Gl 616, Gl616, Gliese 616, HD 146233, HD146233, HIP 79672, HIP79672, HR 6060, HR6060.

References

[1] https://en.wikipedia.org/wiki/18_Scorpii

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