Beta Ursae Majoris
Beta Ursae Majoris (β Ursae Majoris, abbreviated Beta UMa, β UMa), formally named Merak /ˈmɪəræk/, is a star in the northern circumpolar constellation of Ursa Major….Beta Ursae Majoris.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Mass | 2.7 M ☉ |
| Radius | 3.021 ± 0.038 R ☉ |
| Luminosity | 63.015 ± 1.307 L ☉ |
| Surface gravity (log g) | 3.83 cgs |
What size of star is Merak?
1.3059 million mi
Beta Ursae Majoris/Radius
Is Merak a main sequence star?
Merak, also designated as β Ursae Majoris (beta Ursae Majoris), is a variable main-sequence star in the constellation of Ursa Major. Merak visual magnitude is 2.37, making it the 80th brightest star in the sky.
What is the name of the bright star just above Merak?
Take the distance between Dubhe and Merak; Polaris is the bright star that sits about five times that distance away. Polaris actually is part of a binary (two) star system.
Where is the star Merak?
RA 11h 1m 50s | Dec +56° 22′ 57″
Beta Ursae Majoris/Coordinates
What is the luminosity of Merak?
63.02 L☉
Beta Ursae Majoris/Luminosity
Is Merak a white dwarf?
Merak is a bluish-white subgiant star of spectral type A1IVps. The star is located at around 79.7 light-years / 24.45 parsecs away from the Sun.
Is Merak a circumpolar star?
Merak is the bottom right star of the Big Dipper’s bowl. Like the rest of Ursa Major constellation, the star is circumpolar to most of the northern hemisphere and can be seen year-round.
What Merak means?
Definition of Merak astronomy. : a blue star of the second magnitude that is seen in the constellation Ursa Major and forms part of the base of the Big Dipper The outer two stars in the cup of the Big Dipper are called Dubhe and Merak.
What is the name of our current pole star?
Polaris
Currently, Earth’s pole stars are Polaris (Alpha Ursae Minoris), a magnitude-2 star aligned approximately with its northern axis, and a pre-eminent star in celestial navigation, and—on its southern axis—Polaris Australis (Sigma Octantis), a much dimmer star.
What are the three bright stars in a line?
It consists of the three bright stars Alnitak, Alnilam and Mintaka. Looking for Orion’s Belt is the easiest way to locate Orion in the night sky. The stars are more or less evenly spaced in a straight line, and so can be visualized as the belt of the eponymous hunter’s clothing.
How far from Earth is Merak?
79.75 light years
Beta Ursae Majoris/Distance to Earth
Using the most recent figures given by the 2007 Hipparcos data, Merak distance from Earth is 79.75 light years. The star’s name is a traditional/name which has been officially recognised by the I.A.U.
What kind of star is Merak?
Beta (β) Ursa Major, Merak, is a greenish white star in the loin or flank of the Great Bear. Merak, or Mirak, is from Al Marakk, the Loin (of the Bear); but English writer on globes John Chilmead (circa 1639) said Mirae, and the 16th century French scholar Scaliger , Mizar .
How far is Merak from Earth?
Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 41.07 which gave the calculated distance to Merak as 79.42 light years away from Earth or 24.35 parsecs. It would take a spaceship travelling at the speed of light, 79.42 years to get there.
What is the magnitude of Merak?
Beta Ursae Majoris (β Ursae Majoris, abbreviated Beta UMa, β UMa), also named Merak, is a star in the northern circumpolar constellation of Ursa Major. The apparent visual magnitude of this star is +2.37, which means it is readily visible to the naked eye.
