what is the most common star?

Answer 1

Red dwarf stars account for 78% of all known stars in the Morgan-Keenan Spectral Classification. They are stellar class M

Abundance of the main classes of stars, from hottest to coolest:

Class O (very hot and very luminous, bluish with most of their output in the ultraviolet range) are the rarest of all main sequence stars, constituting as few as 1 in 32,000. Example: Zeta Puppis

Class B stars (extremely luminous and blue) constitute about 0.13% of main sequence stars -- rare, but much more common than those of class O. Examples: Rigel, Spica

Class A stars (white or bluish-white) comprise perhaps 0.63% of all main sequence stars. Examples: Vega, Sirius

Class F stars (white with a slight tinge of yellow) represent 3.1% of all main sequence stars. Examples: Canopus, Procyon

Class G stars are about 8% of all main sequence stars. Examples: Our Sun, Capella

Class K stars (orangish, slightly cooler than our Sun) make up some 13% of main sequence stars. Examples: Arcturus, Aldebaran

Class M is by far the most common class if we go by the number of stars. All the red dwarfs go in here and they are plentiful; over 78% of stars are red dwarfs, such as Proxima Centauri. M is also host to most giants and some supergiants such as Antares and Betelgeuse, as well as Mira variables. Examples: Betelgeuse, Barnard's star

Characteristics of red dwarf stars:

Their photospheric temperature is in the range 2,000 - 3,500 degrees Kelvin (where the Sun's is 5,500 degrees Kelvin), their mass is typically 0.3 of the Sun, their radius is typically 0.4 of the Sun and their luminosity is typically 0.04 of the Sun

Here is a list of the 62 stars within 5 parsecs of earth, with their stellar class and distance:

Proxima Centauri M5.5Ve 4.22 light years
Alpha Centauri A G2V 4.36 light years
Alpha Centauri B K0V 4.36 light years
Barnard's Star M4.0Ve 5.96 light years
Wolf 359 M6.0V 7.78 light years
Lalande 21185 M2.0V 8.29 light years
Sirius A A1V 8.58 light years
Sirius B DA2 8.58 light years
Luyten 726-8 B M5.5Ve 8.72 light years
Luyten 726-8 A M6.0Ve 8.72 light years
Ross 154 M3.5Ve 9.68 light years
Ross 248 M5.5Ve 10.32 light years
Epsilon Eridani K2V 10.52 light years
Lacaille 9352 M1.5Ve 10.74 light years
Ross 128 M4.0Vn 10.91 light years
EZ Aquarii M5.0Ve 11.26 light years
Gl 866 B M? 11.26 light years
Gl 866 C M? 11.26 light years
Procyon A F5V-IV 11.40 light years
Procyon B DA 11.40 light years
61 Cygni A K5.0V 11.40 light years
61 Cygni B K7.0V 11.40 light years
Struve 2398 A M3.0V 11.52 light years
Struve 2398 B M3.5V 11.52 light years
Gl 15 A M1.5V 11.62 light years
Gl 15 B M3.5V 11.62 light years
Epsilon Indi K5Ve 11.82 light years
DX Cancri M6.5Ve 11.82 light years
Tau Ceti G8Vp 11.88 light years
GJ 1061 M5.5V 11.92 light years
YZ Ceti M4.5V 12.13 light years
Luyten's Star M3.5Vn 12.36 light years
Teegarden's star M6.5V 12.46 light years
SCR 1845-6357 M8.5V 12.57 light years
Kapteyn's Star M1.5V 12.77 light years
Lacaille 8760 M0.0V 12.86 light years
Kruger 60 A M3.0V 13.14 light years
Kruger 60 B M4.0V 13.14 light years
Ross 614 M4.5V 13.34 light years
Gl 234 B M5.5V 13.34 light years
Gl 628 M3.0V 13.81 light years
Van Maanen's Star DZ7 14.06 light years
Gl 1 M3.0V 14.22 light years
Wolf 424 A M5.5Ve 14.30 light years
Gl 473 B M7Ve 14.30 light years
TZ Arietis M4.5V 14.51 light years
Gl 687 M3.0V 14.79 light years
LHS M6.5V 14.81 light years
Gl 674 M3.0V 14.81 light years
GJ 1245 A M5.5V 14.81 light years
GJ 1245 B M6.0V 14.81 light years
GJ 1245 C M? 14.81 light years
GJ 440 DQ6 15.06 light years
GJ 1002 M5.5V 15.31 light years
GJ 876 M3.5V 15.34 light years
GJ 412 A M1.0V 15.83 light years
WX Ursae Majoris M5.5V 15.83 light years
GJ 380 K7.0V 15.85 light years
GJ 388 M3.0V 15.94 light years
LHS 288 (Luyten 143-23) M5.5V 15.94 light years
GJ 832 M3.0V 16.08 light years
LP 944-020 M9.0V 16.19 light years

There are only 2 Sun-like stars (G-class) in this list of 62 stars, 6 K-class stars, 6 miscellaneous stars and 48 M-class stars.

48 out of 62 is 77.4%, indicating our immediate neighbourhood (the Orion arm of the Milky Way spiral galaxy) is pretty typical of the universe as a whole.

Answer 2

North Star

Answer 3

Lutfor is the most right. Our star is actually on the high end of mass (among the 7% most massive stars) versus the other stars. There are MANY, MANY more times lower mass stars than our Sun. Massive stars are exceedingly rare in the cosmos if you take a look at them versus others.

Answer 4

1st magnitude stars are the most common since they are the brightest and most easy to see. 5th magnitude stars are much fainter, harder to see, and less common in the night sky without special instruments to see them with.

Oh, wait, do you mean out of the star classifications: O, B, A, F, G, K, and M stars? Which one of those is the most common? I think the Sun is a G star which are quite common in the Milky Way Galaxy. Correction, according to this source M stars are the most common.

Answer 5

Red dwarf stars are believed to be the most common star type in the universe.

Red dwarf stars comprise the vast majority of stars and have a diameter and mass of less than one-third that of the Sun (down to 0.08 solar masses, which are brown dwarfs) and a surface temperature of less than 3,500 K. They emit little light, sometimes as little as 1/10,000th that of the sun. Due to the slow rate at which they burn hydrogen, red dwarfs have an enormous estimated lifespan; estimates range from tens of billions up to trillions of years.

Answer 6

The Sun

Answer 7

There is one star that comes out everyday and that would be the sun.Now another popular star includes the North Star.Some well known constellations include the Big Dipper and the Little Dipper.

Answer 8

Red dwaves, spectral type K or M.
They make the vast majority of stars, and burn very slowly.

Answer 9

The sun of course... but many still don't know that our sun is a star...

Answer 10

for us the most common one you see is our sun

Answer 11

"common" = "coarse: lacking refinement or cultivation or taste"

"star" -- "an actor"

Most common star?

Paris Hilton