With a visual apparent magnitude of −1.46, Sirius is almost twice as bright as Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B.

Feb 21, 2025 · Although white to blue-white in color, Sirius might be called a rainbow star, as it often flickers with many colors. The flickering colors are especially easy to notice when you spot Sirius low...

Apr 12, 2015 · Sirius, a blue-white star 8.16 light distant, is the brightest star in the sky and radiates more than 20 times the energy of our own Sun.

Jan 10, 2019 · Sirius is the brightest star in the sky and can easily be found during the winter. Learn more about this twinkling multicoloured star.

Based on the spectral type (A1V C), Sirius A colour is blue - white, although not the hottest stars, they are considerably hotter than our own star which is white. Sirius A temperature is in the range of between 7,500 and 10,000 Kelvin.

Dec 15, 2017 · When you see the sky's brightest star - Sirius - low in the sky, you're seeing it shine through an extra thickness of Earth's atmosphere. At such times, its colorful flashing might surprise you.

Sep 4, 2023 · The star Sirius, also known as the Syrian star, is renowned for being the brightest star in the entire night sky. It is often referred to as Alpha the Big Dog as well. This stunning star has a beautiful white hue and boasts a magnitude of -1.46.

Jul 2, 2024 · Sirius and Betelgeuse are both bright stars in the night sky, but they differ in size, color, and temperature. Sirius is a white star, while Betelgeuse is a red supergiant.

Jan 31, 2024 · The brightest of all the stars dazzling in the night sky is Sirius, the “Dog Star.” It is the brightest star in the constellation Canis Major, the Greater Dog, and shines prominently at around 10 p.m. local time where it can be seen toward the south on chilly winter evenings.

Jan 23, 2010 · I've observed Sirius on two occasions now and notice how it shines with a pure, brilliant silvery white colour, but also how it sparkles with other colours such as red and blue. Is this the star itself or as I suspect, the effect of the mirror …