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37 relations: Angular distance, Apparent magnitude, Aquarius (constellation), Astronomical spectroscopy, Astronomical unit, Bayer designation, Binary star, Bortle scale, Bright Star Catalogue, Castor Moving Group, Celestial equator, Chemically peculiar star, Coeval, Constellation, CSIRO, Debris disk, Durchmusterung, Effective temperature, Flamsteed designation, G-type main-sequence star, Gliese Catalogue of Nearby Stars, Glossary of astronomy, Henry Draper Catalogue, Hipparcos, Infrared excess, Main sequence, Minute and second of arc, Monthly Notices of the Royal Astronomical Society, Parallax, Position angle, Smithsonian Astrophysical Observatory Star Catalog, Solar analog, Spitzer Space Telescope, Star catalogue, Stellar atmosphere, Stellar classification, X-ray astronomy.
Angular distance
In mathematics (in particular geometry and trigonometry) and all natural sciences (e.g. astronomy and geophysics), the angular distance (angular separation, apparent distance, or apparent separation) between two point objects, as viewed from a location different from either of these objects, is the angle of length between the two directions originating from the observer and pointing toward these two objects.
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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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Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces.
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Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other celestial objects.
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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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Bayer designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.
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Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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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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Bright Star Catalogue
The Bright Star Catalogue, also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue, is a star catalogue that lists all stars of stellar magnitude 6.5 or brighter, which is roughly every star visible to the naked eye from Earth.
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Castor Moving Group
The Castor Moving Group is a moving group of stars sharing similar velocities.
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Celestial equator
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
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Chemically peculiar star
In astrophysics, chemically peculiar stars (CP stars) are stars with distinctly unusual metal abundances, at least in their surface layers.
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Coeval
No description.
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Constellation
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
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CSIRO
The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an independent Australian federal government agency responsible for scientific research.
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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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Durchmusterung
In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.
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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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Flamsteed designation
A Flamsteed designation is a combination of a number and constellation name that uniquely identifies most naked eye stars in the modern constellations visible from southern England.
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G-type main-sequence star
A G-type main-sequence star (Spectral type: G-V), often (and imprecisely) called a yellow dwarf, or G dwarf star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.84 to 1.15 solar masses and surface temperature of between 5,300 and 6,000 K., G. M. H. J. Habets and J. R. W. Heintze, Astronomy and Astrophysics Supplement 46 (November 1981), pp.
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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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Glossary of astronomy
This page is a glossary of astronomy.
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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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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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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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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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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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Parallax
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
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Position angle
Position angle, usually abbreviated PA, is the convention for measuring angles on the sky in astronomy.
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Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
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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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Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.
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Star catalogue
A star catalogue (Commonwealth English) or star catalog (American English), is an astronomical catalogue that lists stars.
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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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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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References
[1] https://en.wikipedia.org/wiki/53_Aquarii
