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In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. The lower the color index, the more blue (or hotter) the object is. Conversely, the larger the color index, the more red (or cooler) the object is.
HD 48948 is a K-type main-sequence star located in the constellation Lynx, approximately 55 light years away, based on a parallax of 59.393 mas.At an apparent magnitude of 8.58, it is too faint to be seen with the naked eye.
The last time to catch the International Space Station over Columbus this week is Wednesday. Catch the International Space Station over Columbus tonight and tomorrow Skip to main content
On Wednesday, December 4, stargazers are in for a treat as the two brightest objects in the sky, Venus and the moon, will appear close together, according to Space.com.
Effective temperature of a black body compared with the B−V and U−B color index of main sequence and supergiant stars in what is called a color-color diagram. [1] Stars emit less ultraviolet radiation than a black body with the same B−V index. Although stars are not perfect blackbodies, to first order the spectra of light emitted by stars ...
An asteroid will briefly eclipse Betelgeuse, a bright star in the Orion constellation, causing it to disappear from view for those in a narrow strip of the globe.
The star Epsilon Cygni also bore this traditional name and Gamma Corvi was referred to as Gienah Corvi or Gienah Ghurab to distinguish it from this star in Cygnus. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) [ 17 ] to catalogue and standardize proper names for stars.
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