25 relations: Apparent magnitude, Astronomy & Astrophysics, Binary star, Blue straggler, Caldwell catalogue, Cambridge University Press, Canis Major, Caroline Herschel, Constellation, Epoch (astronomy), Gamma Canis Majoris, HD 56405, Journal for the History of Astronomy, Messier 41, Messier 50, Michel Mayor, New General Catalogue, Northwestern University, Olin J. Eggen, Open cluster, R Canis Majoris, Red giant, Sirius, Sloan Digital Sky Survey, William Herschel.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
Astronomy & Astrophysics is a peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
A blue straggler is a main-sequence star in an open or globular cluster that is more luminous and bluer than stars at the main-sequence turn-off point for the cluster.
The Caldwell Catalogue is an astronomical catalogue of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
Canis Major is a constellation in the southern celestial hemisphere.
Caroline Lucretia Herschel (16 March 1750 – 9 January 1848) was a German astronomer, whose most significant contributions to astronomy were the discoveries of several comets, including the periodic comet 35P/Herschel–Rigollet, which bears her name.
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.
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.
Gamma Canis Majoris (γ Canis Majoris, abbreviated Gamma CMa, γ CMa), also named Muliphein, is a star in the constellation of Canis Major.
HD 56405 (also known as HIP 35180) is a main sequence star in the Canis Major constellation.
Journal for the History of Astronomy (JHA) is a peer-reviewed academic journal that publishes papers in the History of Astronomy from earliest times to the present, and in history in the service of astronomy.
Messier 41 (also known as M41 or NGC 2287) is an open cluster in the Canis Major constellation.
Messier 50 (also known as M 50 or NGC 2323) is an open cluster in the constellation Monoceros.
Michel G.E. Mayor (born 12 January 1942, Lausanne) is a Swiss astrophysicist and professor emeritus at the University of Geneva's Department of Astronomy.
The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888.
Northwestern University (NU) is a private research university based in Evanston, Illinois, United States, with other campuses located in Chicago and Doha, Qatar, and academic programs and facilities in Miami, Florida, Washington, D.C., and San Francisco, California.
Olin Jeuck Eggen (July 9, 1919 – October 2, 1998) was an American astronomer.
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.
R Canis Majoris is an eclipsing interacting binary star system in the constellation Canis Major.
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.
Sirius (a romanization of Greek Σείριος, Seirios,."glowing" or "scorching") is a star system and the brightest star in the Earth's night sky.
The Sloan Digital Sky Survey or SDSS is a major multi-spectral imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, United States.
Frederick William Herschel, (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer and brother of fellow astronomer Caroline Herschel, with whom he worked.