Super Moon, Saturn in the moon ... In July, the starry moon sings the protagonist!

July is already summer season, and the weather gradually begins to become hot and humid. July is also the "happy month" of children, because students have begun summer vacation. During the summer vacation, if you have a chance, you can come to the suburbs to dispel the summer "parent -child tour", and by the way, you can also pay attention to the starry sky above your head. These good plays "leading" by the moon will accompany everyone through the hot summer and night.

July 14 Super Moon

The moon runs around the earth on an ellipse orbit. The nearest point on the orbit is called a near place. If the moon is near the nearly place, the moon will look "big and round". This is the so -called "super superiority". "Moon", astronomy is called near the moon. On June 14, we once ushered in a "Super Moon". But in fact, the super moon on July 14 is the largest full moon this year.

When the moon is near the place, it is about 360,000 kilometers from the earth, and it is more than 400,000 kilometers from the earth at a distance. It is precisely because of this difference that the maximum full moon is about 14%larger than the minimum full moon, and the area is about 30%larger. However, although this difference is obvious, if it is not a well -trained astronomer and astronomical enthusiasts, there are no references for comparison, it is difficult to distinguish by the naked eye.

The full moon time was at 2:38 am on July 14th, and the moon passed by the near July 13:06 on July 13th, and the difference between the two was only 9.5 hours. The "Super Moon" on June 14, the full moon occurred before the moon passed by, and the two were only 11.5 hours. This time, "Super Moon" is only about 10 cents larger than the "Super Moon" in June. It seems that the size is exactly the same under the degree of resolution of the naked eye. It is worth mentioning that because the full moon time was in the early morning of the 14th, the moon watching the moon on the evening of the 13th is more suitable. Do not wait until the evening of the 14th.

Saturn in Saturn on July 16th

Saturn moon convergence will appear at 4:17 in the morning on July 16. Saturn and the moon will be about 4 degrees. From now on, Saturn's observation conditions will become better and better. It is no longer necessary to observe in the middle of the night like the first two months. At present, Saturn will rise in less than 2 hours after sunset, and the rising time will become earlier and earlier.

This time, Saturn's monthly observation was better on the evening of the 15th. For more than an hour after dark that day, Saturn and Moon will rise from the horizon of the south of the East. Saturn's brightness was 0.5 that day, which looked very bright, slightly darker than the weaver, and brighter than cowherd star. Since the full moon has just passed, the moon looks like a round moon. Saturn is on the left side of the moon, about 7 degrees apart, and both are located in Capricorn. Over time, they rose higher and higher, and the distance between the two was slowly approaching. Until the morning of the 16th, it was running to the southwest sky.

The distance from Saturn to the sun is ranked sixth among the planets of the solar system. It is the farthest planet that people can easily see with the naked eye. The radius of Saturn's rotation rail is slightly greater than 9.5 astronomical units, about 1.4 billion kilometers. Due to the farther from the solar, Saturn's average speed on the track is only about 9.6 km/s. It takes about 29 and a half years around the sun. It is the slowest one of the five major planets in the sky, and the shortest one -cycle with the earth.

The so -called consolidation cycle is the time to go through the twice of the layman like Saturn. It takes about 378 days, that is, the time when Saturn is rushing to the sun every year to postpone 13-14 days than the previous year. The closer of Jupiter and the earth than Saturn's closest to the sun is 399 days, and the day is delayed a little more than the previous year.

Saturn belongs to the giant giant star, ranking second among the planets of the solar system, which is slightly smaller than Jupiter. Its average density is small, and it is only less than 0.7 grams per cubic centimeter, which is smaller than the density of water. If you can find a large ocean, Saturn can drift in the sea. Saturn is the most beautiful celestial body in the telescope, because it has a beautiful aura, which can be seen with about 30 times the telescope. If it is more than 100 times more telescope, Saturn's aura can be seen very clearly.

July 21st Monthly Hidden Mars

In addition to the monthly cover of Scorpio Δ stars on July 10th, there is also a monthly cover star that is worth watching. This time, the famous Mars was covered. This time the Mart -Martian time was late at night on July 21st. It can be seen in the northeast of Asia. The second half of the northeast of China can be seen. During the entire period of the entire area, the moon is below the horizon. Therefore, it is below the horizon. I can't see the monthly cover of Mars at all.

On July 21, about 40%of the moon's appearance was illuminated. The process of covering the star is that Mars enters the back of the moon from the moonlight, reappearing from the dark side. In my country, there are only the second half of the process in Heilongjiang and Jilin, which is the scene where Mars appears again from behind the moon. However, Mars does not appear completely from behind the moon. This is because Mars has a small view of sight. It takes nearly 20 seconds to come out from behind the moon. Therefore Bright. At the beginning, because the moon has not yet risen out of the horizon, it cannot be observed.

For the observer in Beijing, although the process of the moon covering Mars cannot be appreciated, a few minutes after midnight, you can see the moon rise from the horizon north from the east.The side is only half a degree apart. The distance between the two is so close to it, it is worth seeing.July 27 Venus with the moon with the moon

In the early morning of July 27, we can appreciate the wonderful Venus with the moon phenomenon in the low altitude north of the east before dawn.More than an hour before sunrise on the same day, the bright Venus and a round of bending moon rose from the horizon north of the east. The moon was on the left and Venus on the right. The two were about 4.5 degrees.July 27th is the 29th lunar calendar. It was only two days before Shuoyue. The moon was a very detailed remnant moon. When it was as soon as it was promoted to the ground, it might not be as easy to see as bright as a bright Venus.The brightest celestial body in the two night sky in Venus and the Moon meets closely. It is a rare scene and worthy of photography.(Kou Wen, a senior engineer of Beijing Astronomical Museum)

Source: Science and Technology Daily

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