Faster access than browser!29 relations: Apparent magnitude, Aquila (constellation), Bayer designation, Bright Star Catalogue, Celestial equator, Constellation, Double star, Durchmusterung, Effective temperature, Flamsteed designation, Galactic Center, Galactic plane, Giant star, Glossary of astronomy, Henry Draper Catalogue, Hipparcos, Margin of error, Milky Way, Minute and second of arc, Monthly Notices of the Royal Astronomical Society, Orbital eccentricity, Orbital inclination, Parallax, Smithsonian Astrophysical Observatory Star Catalog, Spectrum, Star, Stellar atmosphere, Stellar classification, Stellar evolution.
Apparent magnitude
The apparent magnitude (m) of a celestial object is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere.
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Aquila (constellation)
Aquila is a constellation in the northern sky.
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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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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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Celestial equator
The celestial equator is a great circle on the imaginary celestial sphere, in the same plane as the Earth's equator.
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Constellation
In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU).
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Double star
In observational astronomy, a double star is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope.
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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
Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek and Roman letters.
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Galactic Center
The Galactic Center is the rotational center of the Milky Way.
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Galactic plane
The galactic plane is the plane in which the majority of a disk-shaped galaxy's mass lies.
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Giant star
A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.
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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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Margin of error
The margin of error is a statistic expressing the amount of random sampling error in a survey's results.
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Milky Way
The Milky Way is the galaxy that contains our Solar System.
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Minute and second of arc
A minute of arc (MOA), arcminute (arcmin) or minute arc is a unit of angular measurement equal to one-sixtieth 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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Orbital eccentricity
The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle.
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Orbital inclination
Orbital inclination is the angle between a reference plane and the orbital plane or axis of direction of an object in orbit around another object.
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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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Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
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Spectrum
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary infinitely within a continuum.
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Star
A star is a luminous sphere 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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Stellar evolution
Stellar evolution is the process by which a star changes during its lifetime.
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Redirects here:
AAVSO 1859-04, ADS 12007, ADS 12007 A, CCDM J19050-0402A, H Aql, H Aquilae, HD 177463, HIC 93717, HIP 93717, HR 7225, IDS 18597-0411, IDS 18597-0411 A, SAO 142996.
