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58 relations: Alpha Lacertae, Angular distance, Apparent magnitude, AR Cassiopeiae, Bayer designation, Beta Cephei variable, Beta Lacertae, Binary star, Bright Star Catalogue, Cambridge University Press, Catalogues of Fundamental Stars, Chinese language, Constellation, Cygnus (constellation), Durchmusterung, Effective temperature, Epoch (astronomy), Epsilon Cephei, Flamsteed designation, Flying serpent (asterism), Giant star, HD 206267, Henry Draper Catalogue, Hipparcos, International Celestial Reference System, Iota Andromedae, Kappa Andromedae, Lambda Andromedae, Latinisation of names, Light-year, Messier 39, Minute and second of arc, Monthly Notices of the Royal Astronomical Society, Open cluster, Orbital eccentricity, Orbital period, Pi1 Cygni, Position angle, Psi Andromedae, Rho Cassiopeiae, Sigma Cassiopeiae, SIMBAD, Smithsonian Astrophysical Observatory Star Catalog, Solar luminosity, Solar mass, Solar radius, Star system, Stellar atmosphere, Stellar classification, Stellar parallax, ..., Stellar rotation, Sun, Tau Cassiopeiae, 3 Andromedae, 4 Lacertae, 7 Andromedae, 8 Andromedae, 9 Lacertae. Expand index (8 more) »
Alpha Lacertae
Alpha Lacertae (Alpha Lac, α Lacertae, α Lac) is an A-type main sequence star in the constellation of Lacerta.
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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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AR Cassiopeiae
AR Cassiopeiae (AR Cas) is a multiple star system in the constellation of Cassiopeia.
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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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Beta Cephei variable
Beta Cephei variables, also known as Beta Canis Majoris stars, are variable stars that exhibit small rapid variations in their brightness due to pulsations of the stars' surfaces, thought due to the unusual properties of iron at temperatures of 200,000 K in their interiors.
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Beta Lacertae
Beta Lacertae (Beta Lac, β Lacertae, β Lac) is the fourth-brightest star in the constellation of Lacerta.
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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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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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Cambridge University Press
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
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Catalogues of Fundamental Stars
The Catalogue of Fundamental Stars is a series of six astrometric catalogues of high precision positional data for a small selection of stars to define a celestial reference frame, which is a standard coordinate system for measuring positions of stars.
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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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Cygnus (constellation)
Cygnus is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan.
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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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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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Epsilon Cephei
Epsilon Cephei, Latinized from ε Cephei, is a star in the northern constellation of Cepheus.
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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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Flying serpent (asterism)
Flying Serpent (Tengshe 螣蛇) is an asterism in the Chinese constellation Encampment (Shixiu 室宿).
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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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HD 206267
HD 206267A is a hierarchical triple star system in the northern circumpolar constellation of Cepheus.
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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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International Celestial Reference System
The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU).
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Iota Andromedae
Iota Andromedae (ι And, ι Andromedae) is a star in the constellation Andromeda.
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Kappa Andromedae
Kappa Andromedae (κ And, κ Andromedae) is the Bayer designation for a bright star in the constellation of Andromeda.
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Lambda Andromedae
Lambda Andromedae (λ And, λ Andromedae) is the Bayer designation for a binary star in the northern constellation of Andromeda.
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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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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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Messier 39
Messier 39 (also known as M39, or NGC 7092) is an open cluster in the constellation of Cygnus.
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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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Open cluster
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
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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 period
The orbital period is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars.
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Pi1 Cygni
Pi¹ Cygni (π¹ Cygni, abbreviated Pi¹ Cyg, π¹ Cyg) is a binary star in the northern constellation of Cygnus.
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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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Psi Andromedae
Psi Andromedae (ψ And, ψ Andromedae) is the Bayer designation for a triple star system in the northern constellation of Andromeda.
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Rho Cassiopeiae
Rho Cassiopeiae (ρ Cas, ρ Cassiopeiae) is a yellow hypergiant star in the constellation Cassiopeia.
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Sigma Cassiopeiae
Sigma Cassiopeiae (σ Cas, σ Cassiopeiae) is a binary star in the constellation Cassiopeia.
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SIMBAD
SIMBAD (the Set of Identifications, Measurements, and Bibliography for Astronomical Data) is an astronomical database of objects beyond the Solar System.
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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 luminosity
The solar luminosity,, is a unit of radiant flux (power emitted in the form of photons) conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in terms of the output of 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 system
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
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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 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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Stellar rotation
Stellar rotation is the angular motion of a star about its axis.
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Sun
The Sun is the star at the center of the Solar System.
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Tau Cassiopeiae
Tau Cassiopeiae (τ Cassiopeiae) is a solitary, orange hued star in the northern constellation of Cassiopeia.
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3 Andromedae
3 Andromedae (abbreviated 3 And) is a star in the constellation Andromeda.
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4 Lacertae
4 Lacertae (4 Lac) is a star in the constellation Lacerta.
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7 Andromedae
7 Andromedae (abbreviated 7 And) is a star in the constellation Andromeda.
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8 Andromedae
8 Andromedae (abbreviated 8 And) is a red giant star in the constellation Andromeda.
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9 Lacertae
9 Lacertae (9 Lac) is a star in the constellation Lacerta.
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Redirects here:
81 Cygni, Pi² Cygni, Π2 Cygni.
References
[1] https://en.wikipedia.org/wiki/Pi2_Cygni
