How can Sirius and Venus be distinguished when Sirius is bright or Venus is bright?

Sirius is a star and Venus is a planet. Both stars are bright. Do you know which will be brighter? How to tell Sirius from Venus? Next, the answer will be revealed in detail by constellation knowledge! Let's have a look!

Sirius or Venus? Generally speaking, Venus is bright. Sirius is a star and its brightness is fixed. Venus, such as-1.47, is a planet. Only by reflecting sunlight can we see it. Venus in transit may only be above 10, but generally we observe it in the western sky after sunset or the eastern sky before dawn, and its brightness is basically above -3.5. Generally speaking, Venus is brighter.

How to distinguish Sirius from Venus?

About the contrast between the two stars: Sirius's brightness is generally above-1.4, and it can reach-1.7 at its brightest, while Venus's brightness is generally above -4 and above -4.8 at its brightest. Venus is ten times brighter than Sirius. Sirius usually rises in the southeast.

Distinguish: Venus is an inner planet, and generally does not stay on the horizon after 9 o'clock, but generally sets before 8 o'clock. Sirius rises around 7 o'clock now, and it is already conspicuous at 9 o'clock. 10, the visual field can reach more than 40, which can be seen all night.

Sirius is the alpha star of Canis Canis and the brightest star in the whole day, but it is darker than Venus and Jupiter and brighter than Mars most of the time. Sirius generally refers to Sirius A and Sirius B, with a diameter of 1603600 km. Sirius and its companion star revolve around each other in an orbit with large eccentricity, with a period of 49.9 years and an average distance of about 20 astronomical units (the distance between the sun and the earth). Although the bright star shines brightly, it is not difficult to see the companion star with a large telescope. The companion star has a mass similar to that of the sun, but its radius is only that of the sun, and its density is much higher than that of the sun, with an average density of 30kg/ cm3. It is the first white dwarf discovered.

Introduction to Venus Venus is a planet similar to Earth. Because its mass is close to that of the earth, it is sometimes called the "sister star" of the earth. It is also the only planet in the solar system without a magnetic field. Among the eight planets, Venus' orbit is closest to a circle, and its eccentricity is the smallest, only 0.005438+0 1. Taking the earth as one of the vertices of the triangle, connecting Venus and the sun respectively, we will find that this angle is very small, even if the maximum is only 48.5, because Venus's orbit is inside the earth's orbit. So when we see Venus, it is either in the morning or at night, on the east and west sides of the sky respectively. China ancient people called Venus "Taibai" or "Taibai Venus", also called "Qi Ming" or "Chang Gung" (Chang Gung in the evening and Qi Ming in the morning). The ancient Greeks called it Aphrodite, the goddess of love and beauty in Greek mythology. In Roman mythology, the goddess of love and beauty is Venus, so Venus is also called Venus. Venus is the goddess of love and beauty, so the astronomical symbol of Venus is the symbol of women: ♀, and some people vividly compare this symbol to "Venus's dressing mirror".

Related article recommendation: 2020 Aquarius η meteor shower time April 2020 meteor shower time prediction Lyra meteor shower time 2020 quadrant meteor shower time 2020 meteor shower explosion schedule 2020 astrological collision between civil engineering and ghosts and gods

Singularity constellation network, an encyclopedia of constellation knowledge that many girls will pay attention to. Eight-character marriage, eight-character career, marriage fortune, constellation of wealth, emotional combination, seeing the other half, eight-character calculation, name speed matching, life fortune, compound opportunity, you can also consult the singularity constellation online at the bottom.