Magnitude Apparent: -1.46(star A)/8.30(star B)Absolute: 1.42(star A)/11.18(star B) Astrometry Distance from Earth 8.6 ly Radial velocity −7.6 km/s Proper motion RA: −546.05 mas/yrDec.: −1223.14 mas/yr Parallax 379.21 ± 1.58 mas Sirius, also known as Alpha Canis Major...
Its absolute magnitude is 1.45 and its distance is 8.6 light years.The Equinox J2000 equatorial coordinates are RA = 06h 45m 08.9s, Dec = -16° 42' 58". Sirius has a spectral type of A1V, a surface temperature of 9940° Kelvin and a luminosity 25 times the Sun. It has a mass ...
Sirius appears bright because of both its intrinsic luminosity and its proximity to Earth. At a distance of 2.6 parsecs (the Sirius system is one of Earth's near neighbors. Sirius A is about twice as massive as the Sun and has an absolute visual magnitude of 1.42. It is 25 times more ...
It is the only star known to us with absolute certitude in the Egyptian records — its hieroglyph, a dog, often appearing on the monuments and temple walls throughout the Nile country. Its worship, chiefly in the north, perhaps, did not commence till about 3285 B.C., when its heliacal ...
Sirius B is estimated at being 0.228 billion years old but could be between 0.2180 and 0.2380 Magnitude A number represents a star’s magnitude, whether apparent/visual or absolute. The smaller the number, the brighter the star is. The Sun is the brightest star and has the lowest of all ...
As anA-class star, Sirius is significantly larger than our Sun and shines with an absolute magnitude more than 20 times more luminous. But it’s still on the main sequence, which means it’s still burning hydrogen in its core — it hasn’t expanded into a giant phase yet. So the prima...
Located in theconstellationof Canis Major, Sirius shines with anapparent magnitudeof -1.46. It's noticeably brighter than its nearest rivalCanopus (α Car mag. -0.72)and four times more brilliant thanArcturus, the brightest star in the northern section of sky. Sirius is also known as the "Do...
Magnitude -1.46 Class Main-sequence Absolute magnitude 1.43 Spectral Type A1V Color Index (B-V) 0 Temperature 10125K The red dot in the diagram below shows where Sirius is situated in the Hertzsprung–Russell diagram.H-R diagram showing the position of Sirius. Attribution: Richard Powell / ...