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Many star names are, in origin, descriptive of the part in the constellation they are found in; thus Phecda, a corruption of Arabic فخذ الدب ( fakhdh ad-dubb, 'thigh of the bear'). Only a handful of the brightest stars have individual proper names not depending on their asterism; so Sirius ('the scorcher'), Antares ('rival of Ares ', i.e ...
The following is a list of stars with resolved images, that is, stars whose images have been resolved beyond a point source. Aside from the Sun, observed from Earth, stars are exceedingly small in apparent size, requiring the use of special high-resolution equipment and techniques to image. For example, Betelgeuse, the first star other than the ...
Aries has its share of variable stars, including R and U Arietis, Mira-type variable stars, and T Arietis, a semi-regular variable star. R Arietis is a Mira variable star that ranges in magnitude from a minimum of 13.7 to a maximum of 7.4 with a period of 186.8 days. [29] It is 4,080 light-years away. [44]
Five-pointed star, a pentagram with internal line segments removed. Lute of Pythagoras, a pentagram-based fractal pattern. Hexagram, a six-pointed star polygon. Heptagram, a seven-pointed star polygon. Octagram, an eight-pointed star polygon. Enneagram, a nine-pointed star polygon. Decagram, a ten-pointed star polygon.
Spica is a polarimetric variable, first discovered to be such in 2016. [30] The majority of the polarimetric signal is the result of the reflection of the light from one star off the other (and vice versa). The two stars in Spica were the first ever to have their reflectivity (or geometric albedo) measured.
Of the fifty-seven stars included in the new almanac, these two had no traditional names. The RAF insisted that all of the stars must have names, so new names were invented for them. [8] These names have been approved by the IAU WGSN. [2] The book Star Names: Their Lore and Meaning by R. H. Allen (1899) [9] has had effects on star names:
Visible at latitudes between + 65 ° and − 90 °. Best visible at 21:00 (9 p.m.) during the month of June. Libra / ˈliːbrə / is a constellation of the zodiac and is located in the Southern celestial hemisphere. Its name is Latin for weighing scales. Its old astronomical symbol is (♎︎).
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.