No, not even close.
The Big Dipper is not a star, but an asterism made up of seven bright stars that are part of the constellation Ursa Major. The stars in the Big Dipper range in magnitude from about 1.8 to 3.3.
what is the magnitude of the star Alioth in the constellation Ursa Major
It has more stars as you set the brightness threshold lower. If you include all stars down to magnitude 13 there are thousands, maybe even millions. The brightest stars are magnitude 2 so they are easily visible.
About second to third magnitude apparent brightness are the 7 stars of the big dipper in Ursa Major. As such, it is a relatively well known constellation because its stars are noticeable and recognizable for being in general not faint.
Ursa Major does not have a surface. Ursa Major is a constellation. It is therefore a collection of stars. All of those stars would be very different.
The constellation Ursa Major contains about seven main stars that form the shape of a bear. The most famous of these stars is the Big Dipper or Plough asterism, which is not a constellation in itself but part of Ursa Major.
No. Ursa Major and all stars visible from earth are in the Milky Way.
1.7-2.8 tons. <><><><><> Ursa Major is a constellation of stars. Its mass is immense.
ursa major
Ursa Major (Great bear) is a constellation, not a single star, consisting of 20 main stars and over a hundred minor stars.
YES. Ursa Major also contains the big dipper (which is not a constellation, it is an asterism) and the pointer stars are located in the handle of the big dipper.
The question is vague. There are many stars called "pointer" stars. For example, two of the stars in Ursa Major lie along a line that passes very near Polaris. A completely different set of stars in Ursa Major form an arc that passes near Regulus. There are plenty of other such astronomical coincidences.