Phoenix Clear Sky Chart

Monday, March 30, 2015

Sirius the brightest star in the sky

Sirius is the brightest star in the Earth's night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The name "Sirius" is derived from the Ancient Greek: Σείριος Seirios. Sirius is one of the nearest stars to us after the sun.

Distance to Earth: 8.611 light years
Magnitude: -1.46
Surface temperature: 9,940 K
Mass: 4.018E30 kg (2.02 Solar mass)
 Luminosity: 25.4 L
 Constellation: Canis Major