Mizar


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Mizar

(mÿ -zar) (ζ UMa) A white main-sequence dwarf that is one of the brighter stars of the Plough. It forms an optical double with the 4th-magnitude Alcor with a separation of 12′. But Mizar itself is also a double, a fact discovered by Riccioli in 1650. The two components of Mizar, A (the brighter) and B, are currently 14″ apart. It is thought that they complete one orbit about each other in 5000 years. Both components are spectroscopic binaries (see spectroscopic binary). Mizar A was the first spectroscopic binary to be identified (E.C. Pickering, 1889) and has a period of 20.5 days; Mizar B has a period of 361 days. All the stars in the Mizar system are main-sequence dwarfs. The brighter components are of spectral type A2, while the fainter ones are of A5 or A7. mv : 2.27; Mv : 0.07; spectral type: A2 V; distance: 23 pc.

Mizar

 

also ζ Ursae Majoris, a star located at a distance of 27 parsecs from the sun and having a visual magnitude of 2.0 and a luminosity 74 times the solar luminosity. Mizar is actually a system of three stars. Displacement of the spectral lines of the components of Mizar was first discovered in 1889; these lines arise as a consequence of the orbital motion of the separate components about a common center of gravity.

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15 September 2016 - US-based logistics company PS Logistics, LLC has acquried the logistics division of US-based flatbed trucking services Mizar Motors and formed a new partnership as the logistics arm of Heidtman Steel, the company said.
The middle star in the "handle" of the saucepan shape can be fairly easily picked out with binoculars as a double star known as Mizar and Alcor.
I'm referring to the handsome pair Mizar and Alcor, which mark the crook of the Big Dipper's handle.
uk Under pounds 500 Heart of Italy from pounds 389pp: Save up to pounds 100pp off Shearing's Heart of Italy tour, which includes six nights half-board at the Hotel Mizar, Chianciano, plus excursions to Rome and Florence.
The seven stars of the Big Dipper are known by a variety of names including the traditional set Dubhe, Merak, Phecda, Megrez, Alioth, Mizar, and Alkaid.
Speaking from his home in Tripoli, the 52-year-old said of the hearing: "It was a military court and the judge was General Mizar Khalil who is a Shia Muslim, whereas I am a Sunni scholar.
What is unusual about the star Mizar in constellation of Ursa Major (the Plough)?
9 million new shares, while CEO Igor Prokudin, British Virgin Islands-registered company Mizar Management Ltd and Cypriot Laycraft Ltd, currently shareholders at the company, will sell another 23.
Seven fighters were killed in the first raid targeting a compound and a nearby vehicle in Mizar Madakhel village, about 50km west of Miranshah, the main town in North Waziristan.
Recently, Technic'Ortho implemented the Byosys Mizar solution from Kallisto, a provider of rapid prototyping and 3D technologies based in Toulouse, France.
Mizar (Zeta Ursae Majoris) is a double star par excellence and one of the best known in the northern skies.
NOVEMBER 25-26 European Autumn Gas Conference EAGC2008 Venue: Spazio Villa Erba, Lake Como, Italy Contact: Silvia Giovanelli, MIZAR Conventions, M2 Travel by Mizar Tel/Fax +39 031 342025, +39 031 342015 Email: info@mizarconventions.