How many days are the stars level 1? What are the grades of stars?

You're on 2 hours a day! I am hanging on my phone! QQ Member VIP Level Daily** (including 2 hours and above) Can accumulate active days VIP1 2 hours Day VIP2 2 hours Day VIP3 2 hours Day VIP4 2 hours Day VIP5 2 hours Day VIP6 2 hours Day Upgrade to one sun is 8300 hours!

360 days! Now the QQ level is calculated by days, not like before, it is calculated by hours, so it is much slower than before, and now it is counted as a day for more than 2 hours in a row, and 24 hours is only counted as a day, and it will be relatively faster to open a membership. Level Hours Required Number of days 1 20 5 One star 2 50 12 Two stars 3 90 21 Three stars 4 140 32 One moon 5 200 45 One star, one moon 6 270 60 Two stars, one moon 7 350 77 Three stars, one moon 8 440 96 Two moons 12 900 192 Three moons 16 1520 320 One sun 32 5600 1152 Two suns 48 12240 2496 Three suns.

Trouble, thanks!

The first star takes five days, the second star takes seven days, the third star takes nine days, and the fourth star takes 11 days, so it's the same moon.

One star equals one level 4 stars equals one moon equals level 4.

In the sky, the brightness of the stars is not the same, so the ancient Greek zhi

The astronomical scholar Hipparchus divided the stars that can be seen with the naked eye into six equal classes, with the brightest star being the first magnitude, and so on, the barely visible star is the sixth magnitude.

Later, the British astronomer Herschel discovered that a first-magnitude star is about 100 times brighter than a sixth-magnitude star, which means that the brightness of a star is twice that of a second-magnitude star.

A star is a level!

Thanks for adopting!

Divided into 6th magnitude according to brightness, the standard first-magnitude star is the famous Cowherd star in the constellation Aquila in the summer night sky. The classification of star brightness was first used by Greek astronomers to set the 20 brightest stars in the sky as first-magnitude stars, and then divided them into second-magnitude stars, third-magnitude stars, and so on to sixth-magnitude stars according to different luminosity. It was not until 1930 that the British astronomer Poxon used optical instruments to determine the luminosity of the stars, and specified the difference in luminosity of each magnitude star, so that the first magnitude star is twice brighter than the second magnitude star, twice brighter than the third magnitude star, and the brightness difference is 100 times when the sixth magnitude star is reached.

It can also be divided by quality.

1.I guess the landlord wants to ask about the first-class star, the second-class star... The level of such a star. This is a visual magnitude.

2.The visual magnitude difference is 1 magnitude, and its brightness difference is multiplied. A 1st magnitude star is exactly 100 times brighter than a 6th magnitude star.

A more accurate number of them is 100 (1 5), which is approximately equal to.

3.The Astronomical Observatory of Harvard University in the United States stipulates that the visual magnitude of the star Ursa Minoris is positive of equal to determine the zero point of the visual magnitude. For example, the Sun's visual magnitude is equal; Sirius's visual magnitude is equal.

Divide the bright ones and the not-so-bright ones.

What three stars, the problem description is not clear.