Sirius
Sirius (/ˈsɪriəs/) is the brightest star (in fact, a star system) 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), meaning "glowing" or "scorcher". The system has the Bayer designation Alpha Canis Majoris (α CMa). What the naked eye perceives as a single star is actually a binary star system, consisting of a white main-sequence star of spectral type A1V, termed Sirius A, and a faint white dwarf companion of spectral type DA2, called Sirius B. The distance separating Sirius A from its companion varies between 8.2 and 31.5 AU.
Sirius appears bright because of both its intrinsic luminosity and its proximity to Earth. At a distance of 2.6 parsecs (8.6 ly), as determined by the Hipparcos astrometry satellite, the Sirius system is one of Earth's near neighbors. Sirius is gradually moving closer to the Solar System, so it will slightly increase in brightness over the next 60,000 years. After that time its distance will begin to increase and it will become fainter, but it will continue to be the brightest star in the Earth's sky for the next 210,000 years.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
- Loading...
- Playlist
- Chat
-
Lyrics list:lyrics
-
T-shirt Money
-
THE ONE
-
Coming Around
-
We're Equal
-
Wisdom
-
Turn It Down
-
Wake Up!
-
A!
-
6 O'clock
-
6 O'Clock On A Tube Stop
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
T-shirt Money
Who is the man, who is the man, who is the man?
Why does it take control of you? Because it can
Who cleans the floors, who mends the doors ?
Who wanted more, who wanted more? You wanted more
Stuck half up a mountain
With no rope, use shouting
Got no hope, it's not funny
They're making T-shirt money
Who is that girl, who is that girl? Beautiful girl
She doesn't need no makeover, natural curls
She looks so rich, with perfect legs, but she's a bitch
Dad's got the cash, her looks won't last, thick as a brick
Stuck half up a mountain
With no rope, use shouting
Got no hope, it's not funny
I want the same things
But I don't know what to say
I can't change it anyway
And I wish I had your face
And I wish I had your brains
But I don't
Stuck half up a mountain
With no rope, use shouting
Got no hope, no money
I want the same things
But I don't know what to say
I can't change it anyway
And I wish I had your face
And I wish I had your brains
Stuck half up a mountain
With no rope, use shouting
Got no hope, no money
I want the same things
But I don't know what to say
I can't change it anyway
And I wish I had your face
And I wish I had your brains
