26 relations: American Association of Variable Star Observers, Apparent magnitude, Apus, Boss General Catalogue, Bright Star Catalogue, Cape Photographic Catalogue, Catalog of 5,268 Standard Stars Based on the Normal System N30, Catalogues of Fundamental Stars, Constellation, Durchmusterung, Earth, General Catalogue of Stellar Radial Velocities, Giant star, Guide Star Catalog, Henry Draper Catalogue, Hipparcos, IRAS, Light-year, PPM Star Catalogue, Smithsonian Astrophysical Observatory Star Catalog, Star, Star catalogue, Stellar classification, Variable star, Variable star designation, 2MASS.
Since its founding in 1911, the American Association of Variable Star Observers (AAVSO) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators.
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!!: R Apodis and Apparent magnitude ·
Apus is a small constellation in the southern sky.
New!!: R Apodis and Apus ·
Boss General Catalogue (GC, sometimes General Catalogue) is an astronomical catalogue containing 33,342 stars.
New!!: R Apodis and Boss General 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!!: R Apodis and Bright Star Catalogue ·
The Cape Photographic Catalogue (CPC) is a star catalogue containing 68,467 stars in the Southern Hemisphere whose declinations are either between −30° and −40° or between −52° and −90°.
Catalog of 5,268 Standard Stars Based on the Normal System N30 is the 1952 auxiliary star catalogue created by Herbert Rollo Morgan to address proper motion inaccuracies in 19th century observations by converting contemporary catalogues from a mean epoch around 1900 (±0.1 yr) to epoch and equinox 1950.0.
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.
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.
New!!: R Apodis and Constellation ·
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!!: R Apodis and Durchmusterung ·
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
New!!: R Apodis and Earth ·
The General Catalogue of Stellar Radial Velocities is a star catalogue which lists radial velocities for 15,107 stars.
A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.
New!!: R Apodis and Giant star ·
The Guide Star Catalog (GSC), also known as the Hubble Space Telescope, Guide Catalog (HSTGC), is a star catalog compiled to support the Hubble Space Telescope with targeting off-axis stars.
New!!: R Apodis and Guide Star Catalog ·
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!!: R Apodis and Henry Draper Catalogue ·
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
New!!: R Apodis and Hipparcos ·
The Infrared Astronomical Satellite (IRAS) was the first-ever space telescope to perform a survey of the entire night sky at infrared wavelengths.
New!!: R Apodis and IRAS ·
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.
New!!: R Apodis and Light-year ·
The PPM Star Catalogue (Positions and Proper Motions Star Catalogue) is the successor of the SAO Catalogue.
New!!: R Apodis and PPM Star Catalogue ·
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
New!!: R Apodis and Star ·
A star catalogue (Commonwealth English) or star catalog (American English), is an astronomical catalogue that lists stars.
New!!: R Apodis and Star catalogue ·
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
New!!: R Apodis and Stellar classification ·
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
New!!: R Apodis and Variable star ·
Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.
The Two Micron All-Sky Survey, or 2MASS, was an astronomical survey of the whole sky in the infrared spectrum and one of the most ambitious such projects.
New!!: R Apodis and 2MASS ·