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Gamma Herculis

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Gamma Herculis, Latinized from γ Herculis, is a magnitude 3.74 binary star system in the northern constellation of Hercules. [1]

50 relations: Alpha Serpentis, Angular diameter, Asterism (astronomy), Astronomical spectroscopy, Baoding, Beta Herculis, Beta Serpentis, Binary star, Birkhäuser, Bright Star Catalogue, Cangzhou, Carnegie Institution for Science, Chinese language, Constellation, CSIRO, Delta Ophiuchi, Delta Serpentis, Durchmusterung, Earth, Effective temperature, Epsilon Ophiuchi, Epsilon Serpentis, Ernst Zinner, Flamsteed designation, Gamma Serpentis, Giant star, Heavenly Market enclosure, Hebei, Henry Draper Catalogue, Hercules (constellation), Hipparcos, Interferometry, Kappa Herculis, Latinisation of names, Liu Wuzhou, Magnitude (astronomy), Main sequence, Minute and second of arc, New Catalogue of Suspected Variable Stars, Parallax, Semiregular variable star, Sima Yong, Smithsonian Astrophysical Observatory, Solar radius, Stellar classification, Stellar evolution, Stellar rotation, University of Illinois at Urbana–Champaign, Variable star, Zeta Ophiuchi.

Alpha Serpentis

Alpha Serpentis (α Serpentis, abbreviated Alpha Ser, α Ser), also named Unukalhai, is a double star in the head (Serpens Caput) of the equatorial constellation of Serpens.

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Angular diameter

The angular diameter, angular size, apparent diameter, or apparent size is an angular measurement describing how large a sphere or circle appears from a given point of view.

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Asterism (astronomy)

In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.

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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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Baoding

Baoding is a prefecture-level city in central Hebei province, approximately southwest of Beijing.

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Beta Herculis

Beta Herculis (β Herculis, abbreviated Beta Her, β Her), also named Kornephoros, is a binary star and the brightest star in the northern constellation of Hercules at a base apparent visual magnitude of 2.81.

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Beta Serpentis

Beta Serpentis, Latinized from β Serpentis, is a binary star system in the constellation Serpens, in its head (Serpens Caput).

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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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Birkhäuser

Birkhäuser is a former Swiss publisher founded in 1879 by Emil Birkhäuser.

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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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Cangzhou

Cangzhou is a prefecture-level city in eastern Hebei province, People's Republic of China.

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Carnegie Institution for Science

The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research.

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Chinese language

Chinese is a group of related, but in many cases mutually unintelligible, language varieties, forming a branch of the Sino-Tibetan language family.

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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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Delta Ophiuchi

Delta Ophiuchi (δ Ophiuchi, abbreviated Delta Oph, δ Oph), also named Yed Prior, is a star in the constellation of Ophiuchus.

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Delta Serpentis

Delta Serpentis (δ Serpentis, δ Ser) is a star system in the constellation Serpens, in its head (Serpens Caput).

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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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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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Epsilon Ophiuchi

Epsilon Ophiuchi (ε Ophiuchi, abbreviated Epsilon Oph, ε Oph), also named Yed Posterior, is a red giant star in the constellation of Ophiuchus.

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Epsilon Serpentis

Epsilon Serpentis, Latinized from ε Serpentis, is a single, white-hued star in the constellation Serpens, in its head (Serpens Caput).

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Ernst Zinner

Ernst Zinner (2 February 1886 in Goldberg, Silesia – 30 August 1970) was a German astronomer and noted historian of astronomy.

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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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Gamma Serpentis

Gamma Serpentis (γ Serpentis, γ Ser) is a star in the equatorial constellation Serpens, in the part of the constellation that represents the serpent's head (Serpens Caput).

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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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Heavenly Market enclosure

The Heavenly Market Enclosure (天市垣, Tian Shi Yuan), is one of the San Yuan or Three enclosures.

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Hebei

Hebei (postal: Hopeh) is a province of China in the North China region.

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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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Hercules (constellation)

Hercules is a constellation named after Hercules, the Roman mythological hero adapted from the Greek hero Heracles.

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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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Interferometry

Interferometry is a family of techniques in which waves, usually electromagnetic waves, are superimposed causing the phenomenon of interference in order to extract information.

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Kappa Herculis

Kappa Herculis (κ Herculis, abbreviated Kap Her, κ Her) is a double star in the constellation of Hercules.

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Latinisation of names

Latinisation or Latinization is the practice of rendering a non-Latin name (or word) in a Latin style.

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Liu Wuzhou

Liu Wuzhou (劉武周; died 622?) was a rebel leader who rose against the rule of the Chinese dynasty Sui Dynasty late in the dynasty's history, and he took imperial style—although it was not completely clear whether the title he took was khan or tianzi.

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Magnitude (astronomy)

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.

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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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New Catalogue of Suspected Variable Stars

The New Catalogue of Suspected Variable Stars (NSV) is a star catalogue containing 14,811 stars which, although suspected to be variable, were not given variable star designations prior to 1980.

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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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Semiregular variable star

Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities.

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Sima Yong

Sima Yong (司馬顒) (died 306), courtesy name Wenzai (文載), was a Jin Dynasty (265-420) imperial prince and briefly a regent for Emperor Hui.

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Smithsonian Astrophysical Observatory

The Smithsonian Astrophysical Observatory (SAO) is a research institute of the Smithsonian Institution headquartered in Cambridge, Massachusetts, where it is joined with the Harvard College Observatory (HCO) to form the Harvard–Smithsonian Center for Astrophysics (CfA).

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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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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 over the course of time.

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Stellar rotation

Stellar rotation is the angular motion of a star about its axis.

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University of Illinois at Urbana–Champaign

The University of Illinois Urbana–Champaign (also known as U of I, Illinois, or colloquially as the University of Illinois or UIUC) is a public research university in the U.S. state of Illinois and the flagship institution of the University of Illinois System.

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Variable star

A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.

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Zeta Ophiuchi

Zeta Ophiuchi (ζ Oph, ζ Ophiuchi) is a star located in the constellation of Ophiuchus.

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Redirects here:

20 Herculis, Γ Herculis.

References

[1] https://en.wikipedia.org/wiki/Gamma_Herculis

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