Based on the spectral type (DA2), Sirius B's colour is white, similar to our star. It is only the atmosphere that causes it to appear yellow. Sirius B's effective temperature is 25,000 Kelvin, which is hotter than the Sun's effective temperature, which is 5,777 Kelvin. The uncertaint...
Magnitude: -1.44 Spectral Type: A0m... Parallax: 379.21 Prop. motion RA: -546.01 mas/yr Prop. motion Dec: -1223.08 mas/yr B-V color index: 0.009 mas/yr Std. error on B-V: 0.007 mas/yr V-I color index: -0.02 mas/yr Std. error on V-I: 0.00 mas/yr Catalogues: HIP32349, ...
the brightest star in the sky. It contains about 100 stars, including several red (or orange) giants, the brightest being of spectral type K3 and mag 6.9, and at the object's center. The stars in this cluster are some of 2,300 light years, and scattered over an area of 38 ...
Sirius is actually a binary star system, consisting of a white main sequence star called Sirius A (spectral type A1V), and a faint white dwarf companion (spectral type DA2), termed Sirius B. The distance separating Sirius A from its companion varies between 8.1 and 31.5 Astronomical Units....
Spectral class: A1 Magnitude: -1.46 The history of Sirius the Dog-star from p.120-129 of Star Names, Richard Hinckley Allen, 1889.[A scanned copy can be viewed on this webpage Alpha (α) Canis Major, Sirius, is a binary, -1.43 and 8.5, brilliant white and yellow star in the Greate...
An unresolved problem regarding ancient astronomical records is that of the star ‘Red Sirius’. While Sirius today shines white with a blueish hue quite in agreement with its spectral type AIV, many Greek/Roman and Babylonian sources (although still disputed) definitely assign a red colour to ...
Red Siriusearly-medieval manuscriptAn unresolved problem regarding ancient astronomical records is that of the star 'Red Sirius'. While Sirius today shines white with a blueish hue quite in agreement with its spectral type AIV, many Greek/Roman and Babylonian sources (although still disputed) ...
SIRIUS. α Canis Majoris.A binary, white and yellow star. The main star belongs to spectral class A l. It has a companion star, Sirius ‘B,’ a white dwarf star that rotates around the main star every 50 years. This is a dwarf star having 90,000 times the density of our Sun. Sir...
Spectral range luminescence300-600 nm Downloads Application-Notes Brochure Manual Softwareupdate Sirius 2 LB 9526 Brochure Brochure of the Sirius 2 LB 9526 Tube Luminometer PDF|495.9 KB Download now ABEL® Cell Activation Assay with the Sirius L ...
Sirius A is a star of spectral type A1V. Sirius B is a white dwarf star, which was once a more massive main sequence star then its companion. Sirius A Sirius A is the star that is seen from Earth and known since ancient times, it is the brightest star in the night sky. As an...