brightest stars
...are the day. The Suns properties equal spectral type 62V, luminosity 1.0, absolute visual magnitude +4.85, apparent visual magnitude -26.72 (this is because unlike other distances measured in parsecs, the Sun is only 1 A.U. from us). The brightest stars surprised me by having different properties than the Sun. Nearby stars are stars very much like our Sun. These stars are on or around the main sequence line observed on an H-R diagram. Even though they are closer to us we do not see any if a few in the night sky. The reason we do not see them is because they are much smaller in size and fainter. Their properties are much like the Suns. Distance-Range: 1.3-3.60 parsecs: average 2.91 parsecs. Apparent Magnitude: A) -26.72 (our sun) - 1.46-+14.81: average: 6.25 (B) R: 1.3-13.02; A: 8.59. Absolute Magnitude-Range: A) 1.4-16.7: average: 10.49 (B) range: 5.7-16.0: average: 11.37. The spectral classifications for the brightest stars are B (6units), A (5 units), F (2 units), G(2 units), K(3units), and M (2units). The luminosity class for the brightest stars is I=4, II=1, III=5, IV=2, V=8. The spectral classifications for the nearby stars is A (1 unit), F (1unit), G (2 units), K (3 units), M (12 units). The luminosity class for the nearby stars is E=1, and V=19. There are a lot of differences with these two types of stars. These differences affect the stars lifetime compared to the Suns. Nearby stars are all core hydro...