How to tell Venus, Jupiter, and Sirius in the night sky?

First of all, it depends on what the gentleman asked about this matter.

If it is a general understanding, then I can clearly tell that Sirius sits down in the constellation Orion, and Orion is also very recognizable now that it is winter, and at about 9 o'clock in the evening in the northern region, the three stars in a straight line in the southern sky are the signs of Orion, and if you look down to the left along it, the very bright one is the Sirius.

Jupiter, now in December, at 5 or 6 o'clock in the north you look at the south sky, the brightest one is, but since it is a planet, it is not as fixed as a star, so I can only give a little experience. I don't have much experience in other seasons, so I don't dare to talk nonsense.

Venus, I don't know.

If you want to learn the star map on this, as the previous friends said, it is better to accumulate honestly and observe. Nowadays, you can learn with the help of software and the Internet, and the efficiency is much better than the previous comparison of the star map in the book. I believe that you will soon have a general understanding of the starry sky.

Otherwise, even if you tell you that the wolf is on the lower left of Orion, if you don't know the star map, even Orion won't be able to find it.

Sirius is best judged. Of the three stars only he is a star, and the position is fixed, in the lower left of the constellation Orion. Winter evenings rise from the southeast. It will be visible in the southeast in the second half of the night in autumn, and in the sky due south after sunset in spring.

Venus is very bright, at its brightest it can reach about equal degrees, and its opening angle to the Sun does not exceed 48 degrees, and it is generally visible after sunset and before sunrise.

Jupiter's brightness can reach about equal to the maximum, except for the Sun, Moon, Venus, and the apparent magnitude of the stars. Sometimes visible all night.

If you are familiar with astronomy, you can refer to the astronomical almanac. If you are not familiar with it, you can pay attention to the news in this area, there will be monthly and quarterly celestial phenomena broadcast, according to this, it is easier to judge which range will not exceed the changes in a certain period.

If you are familiar with the star chart, this is not a problem, when you are familiar with the star chart, you will naturally know which star is not in the star chart, and that is the planet.

And when you are familiar with the starry sky, you should have accumulated several years of experience in stargazing, and you have a little grasp of the movement of planets between constellations, so you can know what is in the sky.

It's said don't guess.,Don't mess with the landlord upstairs.,You just talk about "roughly", you can't pat your chest to guarantee that it must be Venus, I have 9 years of experience and don't write this package ticket, which is equivalent to fooling people.

Install a stellarium and know everything.

If you're too lazy to pretend, you can look at it roughly like this: Around 6 o'clock in the evening, the brightest in the west is Venus, also known as Chang Gung, which will appear in the east at dawn, and at that time it is also called the morning star, which is too white.

The lower 20-degree view of Venus to the right is Jupiter.

In addition to the Sun and Moon, Venus is the first to shine, Jupiter is the second, and the third is Sirius, which is the brightest star in the constellation Canis Major, if you know the constellations.

If there is only one star left in the sky, it usually appears at dusk, so it must be Venus.

Venus is at its brightest -5 magnitude, Jupiter is -3 magnitude at its brightest, Sirius is -1 magnitude.

Venus only appears in the morning and at dusk, Jupiter at opposition can be seen all night, and Sirius is in the lower left direction of Orion.

Uh, I forgot to log in, 2L is mine, if I am lucky enough to be rated, I will add the points to 3L, that is, me, thank you. Hehe.

Sirius is a star and Venus is a planet, both of which stars are brighter, so do you know which star will be brighter? How can you tell Sirius from Venus? Let's do it nextKnowledge of horoscopes

Sirius is still Venus bright.

Generally speaking, Venus is bright.

Sirius is a star, and its brightness is fixed, etc.

Venus is a planet, it can only be seen by reflecting the sun's light, Venus may only be more than 10 magnitude at the time of transit, but generally we observe it in the western sky after sunset or in the eastern sky before dawn, its brightness is basically above the same level, generally speaking, Venus is brighter.

How to distinguish Sirius from Venus

About the comparison of the two stars:

Sirius is generally above the equivalence and can reach the brightest at its brightest, while Venus is generally above -4 magnitude and at its brightest. Venus is more than a dozen times brighter than Sirius. Sirius generally rises from the southeast.

Distinction:

Venus is an inner planet that usually does not stay on the horizon until after 9:00 a.m., and usually sets before 8:00 a.m.

Sirius now rises at about 7 o'clock, is already conspicuous at 9 o'clock, and can reach a horizon altitude of more than 40 degrees at 10 o'clock, and will be visible all night.

Introduction to Sirius.

Sirius, the star of Canis Major, is the brightest star of the day, but is darker than Venus and Jupiter, and brighter than Mars most of the time. Sirius generally refers to Sirius A, as well as Sirius B, with a diameter of 1,603,600 kilometers.

Both Sirius and its companions orbit each other in orbits with a fairly large eccentricity, with a period of years, and an average distance of about 20 AU (Sun-Earth distance). Despite the bright star's radiance, it is not difficult to see the 7th magnitude companion star with a large telescope. The companion star has about the same mass as the Sun, but its radius is only that of the Sun, and its density is much greater than that of the Sun, with an average density of 30 kg cubic centimeters, making it the first white dwarf to be discovered.

Introduction to Venus.

Venus is a terrestrial planet because of its similar mass to Earth, and is sometimes referred to as Earth's "sister star". It is also the only planet in the solar system that does not have a magnetic field. Among the eight planets, Venus's orbit is the closest to a circle, and the eccentricity is the smallest, only.

If you take the Earth as one of the vertices of the triangle and connect Venus and the Sun respectively, you will find that this angle is very small, even at the maximum, because the orbit of Venus is on the inner side of the Earth's orbit. Therefore, when we see Venus, it is either early in the morning or late in the evening, and it is on the east and west sides of the sky, respectively.

The ancient Chinese called Venus "Taibai" or "Taibai Venus", also known as "Qiming" or "Chang Gung" (called "Chang Gung" when it appeared in the evening, and "Qiming" when it appeared in the early morning) The ancient Greeks called Aphrodite, the goddess of love and beauty in Greek mythology. In Roman mythology, the goddess of love and beauty was Venus, so Venus was also called Venus. Venus is the female goddess of love and beauty, so the astronomical symbol of Venus is the symbol of women: some people have likened this symbol to "Venus's vanity mirror".

Sirius (CMA) is the brightest star in the night sky, with an apparent magnitude of +, about light-years from the Solar System. Sirius is actually a binary star system consisting of a spectral A1V white main-sequence star and another spectral DA2 dark white dwarf companion star Sirius B. In literature, Harry's godfather in Harry Potter is called Sirius.

Sirius is so bright not only because of its already high luminosity, but also because of its proximity to the Sun. Sirius is a parsec of seconds (light-years) away from us and is one of the closest stars. Sirius A has twice the mass of the Sun, while the absolute magnitude is equal.

It is 25 times brighter than the Sun, but its luminosity is significantly fainter than that of other bright stars, such as Old Man or Betelgeuse. This binary star system is about 2 million to 3 million years old and originally consisted of two bright blue stars. The higher-quality Sirius B ran out of energy to become a red giant, then gradually sliced away from its outer layers and collapsed about 1.2 million years ago to become today's white dwarf.

Sirius is the star of Canis Major and the brightest star in the entire sky except the Sun.

Myths and legends: In ancient Chinese astrological theory, Sirius was the evil star of "the omen of the Lord's invasion". Qu Yuan wrote in "Nine Songs: Dongjun":

Raise a long arrow to shoot the wolf", using Sirius to compare the Qin State located in the northwest of the Chu State. In Su Shi's "Jiangchengzi", "he will hold the bow like a full moon, look northwest, and shoot the wolf", and use Sirius to compare the Western Xia that threatened the northwest border of the Northern Song Dynasty.

Sirius, whose apparent magnitude is only light-years from Earth, is one of the closest stars to Earth, twice the diameter of the Sun, and twice as massive as the Sun. The surface temperature is 10,500K

Companion Planet: Sirius is a binary star system. It also has a companion star, Sirius B, which is a white dwarf.

In the 19th century, astronomers observed Sirius' position and found that its self-motion was oscillating, so it should have an unobserved companion star, which was disturbed by the gravitational force of the companion star to change Sirius' position. However, it was not until 1862 that the existence of the companion star was confirmed through telescopes.

The companion star has a diameter of 12,000 kilometers, 10,000 times fainter than Sirius, a mass 98% of the Sun, and a surface temperature of 25,200 K; Due to the distance from Sirius, the former Sirius companion** has been the "patent" of the large telescope in the observatory, and until recent years it has been photographed by amateur astronomers. The Hubble Space Telescope measured Sirius B last year.