Faster access than browser!
26 relations: Apparent magnitude, Apus, Asymptotic giant branch, Bayer designation, Binary star, Bortle scale, Bow shocks in astrophysics, Bright Star Catalogue, Catalogues of Fundamental Stars, Circumpolar constellation, Durchmusterung, Henry Draper Catalogue, Hipparcos, Interstellar medium, Luminosity, Monthly Notices of the Royal Astronomical Society, Parallax, Perturbation (astronomy), Red giant, Semiregular variable star, Smithsonian Astrophysical Observatory Star Catalog, Star, Stellar classification, Stellar evolution, Stellar wind, Variable star.
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.
New!!: Theta Apodis and Apparent magnitude · See more »
Apus
Apus is a small constellation in the southern sky.
New!!: Theta Apodis and Apus · See more »
Asymptotic giant branch
The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.
New!!: Theta Apodis and Asymptotic giant branch · See more »
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.
New!!: Theta Apodis and Bayer designation · See more »
Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
New!!: Theta Apodis and Binary star · See more »
Bortle scale
The Bortle scale is a nine-level numeric scale that measures the night sky's brightness of a particular location.
New!!: Theta Apodis and Bortle scale · See more »
Bow shocks in astrophysics
Bow shocks form the boundary between a magnetosphere and an ambient magnetized medium.
New!!: Theta Apodis and Bow shocks in astrophysics · See more »
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.
New!!: Theta Apodis and Bright Star Catalogue · See more »
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.
New!!: Theta Apodis and Catalogues of Fundamental Stars · See more »
Circumpolar constellation
In astronomy, a circumpolar constellation is a constellation (group of stars) that never sets below the horizon, as viewed from a location on Earth.
New!!: Theta Apodis and Circumpolar constellation · See more »
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.
New!!: Theta Apodis and Durchmusterung · See more »
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.
New!!: Theta Apodis and Henry Draper Catalogue · See more »
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
New!!: Theta Apodis and Hipparcos · See more »
Interstellar medium
In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy.
New!!: Theta Apodis and Interstellar medium · See more »
Luminosity
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
New!!: Theta Apodis and Luminosity · See more »
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.
New!!: Theta Apodis and Monthly Notices of the Royal Astronomical Society · See more »
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.
New!!: Theta Apodis and Parallax · See more »
Perturbation (astronomy)
In astronomy, perturbation is the complex motion of a massive body subject to forces other than the gravitational attraction of a single other massive body.
New!!: Theta Apodis and Perturbation (astronomy) · See more »
Red giant
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.
New!!: Theta Apodis and Red giant · See more »
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.
New!!: Theta Apodis and Semiregular variable star · See more »
Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
New!!: Theta Apodis and Smithsonian Astrophysical Observatory Star Catalog · See more »
Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
New!!: Theta Apodis and Star · See more »
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
New!!: Theta Apodis and Stellar classification · See more »
Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
New!!: Theta Apodis and Stellar evolution · See more »
Stellar wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star.
New!!: Theta Apodis and Stellar wind · See more »
Variable star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
New!!: Theta Apodis and Variable star · See more »
Redirects here:
AAVSO 1355-76, HD 122250, HIC 68815, HIP 68815, HR 5261, SAO 257112, Θ Apodis.
References
[1] https://en.wikipedia.org/wiki/Theta_Apodis
