- photographic stellar magnitude
- Космонавтика: фотографическая звёздная величина
Универсальный англо-русский словарь. Академик.ру. 2011.
photographic stellar magnitude
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Stellar kinematics — is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful… … Wikipedia
Magnitude (astronomy) — For other uses, see Magnitude (disambiguation). Magnitude is the logarithmic measure of the brightness of an object, in astronomy, measured in a specific wavelength or passband, usually in optical or near infrared wavelengths. Contents 1… … Wikipedia
Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… … Wikipedia
Stellar evolution — Life cycle of a Sun like star Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most… … Wikipedia
Apparent magnitude — Asteroid 65 Cybele and 2 stars with their magnitudes labeled The apparent magnitude (m) of a celestial body is a measure of its brightness as seen by an observer on Earth, normalized to the value it would have in the absence of the atmosphere.… … Wikipedia
Absolute magnitude — In astronomy, absolute magnitude (also known as absolute visual magnitude) is the apparent magnitude an object would have if it were at a standard luminosity distance (10 parsecs, 1 AU, or 100 km depending on object type) away from the observer,… … Wikipedia
University of Illinois Observatory — Infobox nrhp | name = University of Illinois Astronomical Observatory nrhp type=nhl caption = The observatory at U of I is a National Historic Landmark. locator x = locator y = location = Urbana, Illinois, Champaign County, Illinois, USA nearest… … Wikipedia
Leavitt, Henrietta Swan — ▪ American astronomer born July 4, 1868, Lancaster, Mass., U.S. died Dec. 12, 1921, Cambridge, Mass. American astronomer known for her discovery of the relationship between period and luminosity in Cepheid variables (Cepheid variable),… … Universalium
Logarithmic scale — A logarithmic scale is a scale of measurement that uses the logarithm of a physical quantity instead of the quantity itself. Presentation of data on a logarithmic scale can be helpful when the data covers a large range of values ndash; the… … Wikipedia
Schwarzschild, Karl — born Oct. 9, 1873, Frankfurt am Main, Ger. died May 11, 1916, Potsdam German astronomer. He published his first paper (on celestial orbits) at age 16. In 1901 he became professor and director of the observatory at the University of Göttingen. He… … Universalium
Bond , George Phillips — (1825–1865) American astronomer George Bond spent most of his early life assisting his fatherWilliam Bond , whom he succeeded as director of the Harvard College Observatory in 1859. He thereafter contributed to most of his father s observational… … Scientists
