What kind of star is Alkaid?

blue main-sequence star
Alkaid is a blue main-sequence star of spectral type B3 V, located at around 103.9 light-years / 31.9 parsecs away from the Sun. Alkaid, also known as Eta Ursae Majoris, is the third brightest star in the constellation of Ursa Major, the celestial Great Bear.

Is Alkaid a double star?

Alkaid, Eta Ursae Majoris (η UMa) is a blue main sequence star with an apparent magnitude of 1.86, located at a distance of 103.9 light years from Earth. It is the easternmost star of the Big Dipper.

How far is Ursa Major from Earth?

about 330,000 light-years
It estimated to be located at a distance of about 330,000 light-years (100 kpc) from the Earth. That is about twice the distance to the Large Magellanic Cloud; the largest and most luminous satellite galaxy of the Milky Way.

What color is the star Alkaid?

blue color
Hotter than the other dipper stars, Alkaid is spectral type B3V, making it’s blue color more pronounced. The star is also not a member of the dipper group – like Alpha, it merely happens to be in the area, and is headed a different way.

What is the temperature of the star Alkaid?

16,820 K
Eta Ursae Majoris/Surface temperature

How old is the Alcor star?

Alcor (star)

Observation data Epoch J2000.0 Equinox J2000.0
Age 0.5 ± 0.1 Gyr
Other designations
g Ursae Majoris, 80 Ursae Majoris, BD+55 1603, CCDM J13240+5456D, GC 18155, HD 116842, HIP 65477, HR 5062, PPM 34021, SAO 28751, WDS J13239+5456C
Database references

How many light years away is Alcor?

81.73 light years
Alcor/Distance to Earth

What color is Alcor?

Alcor is a main star in the constellation Ursa Major and makes up the constellation outline. Based on the spectral type (A5V SB) of the star, the star’s colour is blue – white .

Which star is nearest to Earth?

4.246 light years
Proxima Centauri/Distance to Earth

Where is the Alkaid star in the sky?

Alkaid is located in the vicinity of several bright deep sky objects. The Pinwheel Galaxy (Messier 101) can be seen above the Big Dipper’s handle, forming a triangle with Alkaid and its neighbour Mizar, the middle star of the Dipper’s handle.

How big is the star Alkaid in size?

Star type Alkaid is a young star of the spectral type B3 V, indicating a star bluish in colour and still on the main sequence, burning hydrogen into helium in its core. It has 6.1 times the Sun’s mass and 3.4 times its radius.

Is the star Alkaid part of the Big Dipper?

Alkaid is a blue main-sequence star of spectral type B3 V, located at around 103.9 light-years / 31.9 parsecs away from the Sun. It is the easternmost star of the famous Big Dipper / Plough asterism and unlike most stars of this asterism, it isn’t part of the Ursa Major moving group of stars. Alkaid is also one of the 15 Behenian Fixed Stars.

How old is Alkaid compared to the Sun?

Alkaid has an apparent magnitude of +1.86 and an absolute magnitude of -0.67. It is a very young star, being only around 10 million years old or so. Much younger than our sun. Alkaid is much more massive than our sun, having 610% of the sun’s mass.


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