Sirius B was, in fact, discovered by accident. An American telescope maker by the name of Alvan Clark was testing a new lens on Sirius in 1862 when he discovered Sirius B.
Sirius
Related Category: Astronomy: Stars
(sr´s), or Dog Star, brightest star in the sky. It is located in the constellation Canis Major (1992 position R.A. 6h44.8m, Dec. −1642&minut;); its Bayer designation is Alpha Canis Majoris.
Sirius is the brightest star in the night sky with a visual apparent magnitude of '1.46, almost twice as bright as Canopus, the next brightest star. Pronounced /ˈsɪriəs/,[15] the name Sirius is derived from the Ancient Greek Σείριος.
Sirius A
Alpha Canis Majoris A, the Dog Star, is the brightest star in the night sky as well as the brightest star in its constellation. Unlike Sol, it is a slightly bluish, white main sequence dwarf star of spectral and luminosity type A0-1 Vm.
Sirius
What appears as a single star is actually a large binary star system, consisting of a bright white main sequence star of spectral type A1V, named Sirius A, and a faint white dwarf companion of spectral type DA named Sirius B.
SIRIUS (Alpha Canis Majoris). From Orion, look south and to the east to find brilliant Sirius, as if one really needs directions to find the brightest star in the sky.
Sirius and Saturn on New Year's Night
Sirius, the brightest star of the night sky, shines due south at midnight on New Year's Eve.
Sirius is a double star. The companion, Sirius B, is also known as "The Pup," since it is the companion to the The Dog Star. Sirius B has a Visual Magnitude of 8.49, corresponding to a luminosity 1/400 times that of the sun.
Sirius is a main sequence star of spectral type A0 or A1 and has a mass about 2.1 times that of the Sun. It has a companion star that has already evolved off the main sequence into a white dwarf, and hence was once the more massive of the two.
Sirius is the brightest star in the sky, after the Sun. Take a look at the list of the Brightest Stars ...
Sirius A - Brightest Star in the Sky
Hubble Space Telescope image of Sirius, the brightest star in the sky, and its tiny white dwarf companion.
Click on image for full size
NASA, ESA, H. Bond, M. Barstow ...
Sirius B is a white dwarf, a star at the end of its life. An extremely dense object, it is slowly cooling down because it is no longer fusing atoms in its core to produce energy. At the end of its life, the Sun will also become a white dwarf.
Sirius is the list of brightest stars in the night sky with a visual apparent magnitude of −1.46, almost twice as bright as Canopus, the next brightest star....
during that period.
Sirius: (the Dog star) the brightest star in the night sky, used by the Egyptians as a means of determining the beginning of the Nile floods. See heliacal rising.
Sirius The bright jewel of our stellar neighborhood - the "Dog Star'' in the constellation Canis Major - is really a double star, and each member is remarkable among local stars.
Sirius ( CMa)
(a) The brightest star in the night sky. It is a white, A-type star that lies just 8.6 light-years from Earth in the constellation Canis Major. Orbiting the main star (officially called Sirius A) is a faint white dwarf, Sirius B.
Sirius B was the first white dwarf discovered in 1862. The bright source in this Chandra image is Sirius B shining in low-energy X-rays at ~25,000 Kelvin. Sirius A (a normal star twice as massive as the Sun) is the faint source to the upper right.
Sirius A, the brighter of the two objects shown in Figure 20.14, appears twice as luminous as any other visible star, excluding the Sun.
Sirius also has a companion star, known as Sirius B. Sirius B was the first 'white dwarf' to be discovered.
Telescopic Objects:
Object ...
Sirius A - 8.58 LY [YH]
Sirius B - 8.58 LY [YH]
UV Ceti Star System
UV Ceti - 8.72 LY [Y]
Gl 65 B - 8.72 LY [Y] ...
Sirius was sometimes confused with another two-headed beast called Orthrus. This was Geryon's watchdog; his job was to guard this tyrant's cattle. Heracles captured the cattle (as his Tenth Labour), killing Orthrus in the process.
SIRIUS - In 1991 the Gulf war is fought, the poll tax is scrapped and the best team in London wins the league.
ALTAIR - In 1983 Ronald Reagan accuses Russia of being an evil empire. U.S invades Grenada and the film Gandhi picks up 8 oscars.
Sirius is the brightest star in the sky. Sirius B is a white dwarf, as is Procyon B. They have about the same mass as the Sun but are only about one fiftieth of its diameter.
SIRIUS
Sirius (meaning "scorching" in Greek), also known as the dog star, is the brightest star in the sky (except for the sun). It is in the (The Great Dog). Sirius is a main sequence star that is about 70 times more than the sun. It is about 8.
Sirius (Alpha Canis Majoris; possibly aka Alpha Majoris)
Canis Minor (Canis Minoris)
Procyon (Alpha Canis Minoris)
Capricornus (Capricorni) ...
Sirius, a binary consisting of a main-sequence type A star and a white dwarf.
Epsilon Aurigae, an eclipsing binary.
Triple ...
Sirius and Jupiter are just two of billions of objects in space. Lou says it's fun for kids to think about space and how big it is. No one knows how many weird and wild things are in the dark space around Earth.
Sirius is the brightest STAR in the sky and has a magnitude of -1.44. The full Moon has a magnitude of -12.7 and the Sun has a magnitude of -26.7.
New moon
See Phases of the Moon ...
Sirius B
Y'know, if you login, you can write something here. You can also Create a New User if you don't already have an account.
Password ...
Sirius is obvious, even dazzling, in the night sky and has attracted the attention of man for millennia.
Sirius B has a diameter of 7,500 miles, less than the size of Earth, but it is much more dense.
see Sirius. [H76]
Canis Majoris Star
see Beta Cephei Star. [H76]
VY Canis Majoris ...
Near to Sirius (in Canis Minor) and the 4th closest star on this list. Also has a white dwarf companion, like Sirius. One of the 3 that make up the "Winter Triangle" (Sirius, Procyon, and Betelgeuse).
What about Sirius? Its apparent magnitude is lower (therefore brighter) than its absolute magnitude. This means that it is closer than 10 parsecs to us.
Vega (A0), Sirius (A1), Deneb
F
H lines moderate, neutral and singly ionized metal lines
K = 6,000-7,500; M = 1.1-1.6; R = 1.2-1.6; L = 2.0-6.5; T = 3-7 Ga ...
Silver Saint Sirius
Origin of the constellation: Ancient Greece (Ptolemaeus)
Named stars: Alpha CMa (Sirius/Alhabor), Beta CMa (Mirzam), Gamma CMa (Muliphein), Delta CMa (Wezen), Epsilon CMa (Adhara), Zeta CMa (Phurud/Aludra) ...
The image of Sirius A and B is courtesy of Lick Observatory.
Home
Imagine Science ...
Canis Major, with Sirius marking its snout, shown in the
Uranographia of Johann Bode (1801).
3; Sirius: -1.6; Vega: 0.2; Polaris: 2.1). The faintest stars visible to the naked eye on a clear dark night are of about the sixth magnitude (though on a perfectly black background the limit for a single luminous point approaches the eighth ...
The star alpha CMa, commonly known as Sirius (from greek sireios meaning "the sparkling"), is the brightest star in the night sky. It apparent magnitude is -1.5 mag. Sirius also belongs to the nearest stars with a distance of just 8.7 light years.
Sirius (Alpha Canis Majoris)
Small Magellanic Cloud (SMC)
SMC X-1 (2U 0115-73)
Smithsonian Astrophysical Observatory
Smithsonian Astrophysical Observatory Catalog (SAO Catalog)
Snake Nebula (Barnard 72)
SNC meteorites
soft gamma repeater
sol ...
As a final example, the brightest star in the nighttime sky is Sirius, which is in the constellation Canis Major and is termed Alpha Canis Majoris in the Bayer naming system.
The stars that had to be moved away from the Earth to place them at 10 pc are the Sun, Sirius and Vega. You know this because their absolute magnitudes have a larger numeric value than their apparent magnitudes - the stars became fainter.
For the next ten years it slowly increased (though with slight check), and in 1843 was nearly as bright as Sirius; since then it has slowly faded, but it was not till 1869 that it ceased to be visible to the naked eye. It is now about magnitude 7.5.
Suppose we observe the position of a star in the sky--for instance Sirius, the brightest of the lot.
With the exception of Sirius and Procyon (&alpha Canis Minoris), the brightest stars in the sky are not the nearest stars. The nearest star, Proxima (V645 Centauri), in the Centaurus constellation, is 1.3 parsecs away.
This photograph above shows a large part of the southern sky, from Crux to Orion, and includes the two brightest stars in the sky, Sirius and Canopus.
Just to be on the safe side I pointed Dobby below Sirius and grabbed M41 at 8:48pm. Even binoculars resolved this bright, loose star cluster. Then a short star hop North of Sirius led me to M50 at 8:50pm.
The brightest star visible in the night sky is Sirius, located in the constellation Canis Major. With an apparent magnitude of -1.46, it is nearly twice as bright as Canopus, the second brightest star.
Within the constellation can be found the brightest star in the night sky Sirius, also known as the "Dog Star". The name Sirius is derived from the Greek word seirios which means "scorcher".
Together with two other bright stars, [1382] Sirius in Canis Major and [5972] Betelgeuse in Orion, Procyon forms the Winter Triangle, an asterism that appears like an equilateral triangle in the sky.
After a good Easy Alignment (using Sirius and Dubhe - not very far apart in RA), I found that I probably need to retrain the drives. GoTos were still reasonably good - maybe 5 arc-minutes or so, but I think it was a bit better before.
The brightest star in the sky is Sirius at magnitude -1.4. The apparent magnitude of an object is how bright the object seems from the Earth.
The ancient Egyptians began numbering their years when the Sirius rose at the same place as the . The was the first solar calendar and contained 365 days. These were divided into 12 30-day months and five days of festival (Neugebauer 1969).
5 Sirius -1.5 A1 V 2.6 Luyten 726-8 12.5 M6e V 2.7 Ross 154 10.6 M5e V 2.9 Ross 248 12.2 M6e V 3.2 Epsilon Eridani 3.7 K2 V 3.3 Luyten 789-6 12.2 M6 V 3.3 Ross 128 11.1 M5 V 3.3 61 Cygni 5.2 K5 V 3.4 Epsilon Indi 4.7 K5 V 3.4 Procyon 0.3 F5I V 3.
The white dwarf Sirius B has a temperature of 14,000 K and a luminosity only 0.00794 times the Sun's luminosity. What is the diameter of Sirius B in kilometers? (The Sun's radius = 696,000 kilometers.) ...
The brightest star, Sirius, shines at visual magnitude -1.5. Jupiter can get about as bright as visual magnitude -3 and Venus as bright as -4. The full moon is near magnitude -13, and the sun near mag -26.
3 light years (25 trillion miles) of Sirius, which today is the brightest star in Earth's sky.
Voyager 1 and Voyager 2 are destined to wander through our Milky Way galaxy eternally — unless they crash into something we can't yet calculate.
Extending the belt of Orion to the southeast will lead you to Sirius the dog star in Canis Major.
Going across the shoulders from Bellatrix to Betelgeuse finds Procyon in Canis Minor.
fusion has stopped, gravity takes over and a star the size of our Sun will shrink to something like the size of the Earth. This is called a white dwarf and although it's too small to be seen with the naked eye there is a white dwarf called Sirius B ...
 See also: Star, Sky, Light, Sun, Earth
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