Super moon and Saturn's moon are wonderful, are you ready?

The most noteworthy natural phenomenon next week is the largest full moon on July 14 this year. There is also Saturn on July 16.

Super moon

A super moon appeared on June 14, and the super moon came again on July 14. Everyone may ask, how many super moon!

We already know that the moon is running around the earth on an ellipse orbit. The nearest point on the orbit is called a near place. If the moon occurs near the nearby place, the moon will look "big and round". This is the so -called "Super Moon". Astronomy is called the full moon in the nearby place.

It takes an average of about 29 and a half days from a full -month to the next month, which is more than two days longer than the moon's turnover cycle. About 13-14 months will appear super moon. Two or three months before and after, the full moon first appeared one or two days before nearby places, and then appeared after a day or two of the nearby locations. Because they were near the nearby place, they were all super moon. Of course, Super Moon is not a astronomical term. It does not have a strict time that it is enough to be enough to get the super moon. In fact, the full moon on July 14 is the largest full moon this year.

Photography: Su Chen, Beijing Astronomy Museum

When the moon is near the place, it is about 360,000 kilometers from the earth, and the distance is more than 400,000 kilometers at a distance. The maximum full moon is about 14%larger than the minimum full moon, and the area is about 30%larger. Although the difference is obvious, if it is not a well -trained astronomical enthusiast, there is no reference to compare. It is difficult to distinguish by our naked eye.

At about 2:38 am on July 14th, the moon location show diagram

Picture source: Star Map Software

The full moon time was 2:38 am on July 14th. The time of the moon was nearly near July 13th, and the difference between the two was only 9 and a half hours. The "Super Moon" on June 14, before the full moon was near the place, only 11 and a half hours was different from the two times. This month's full moon this month is only about 10 horn in the number than last month. It is far from the degree of resolution of the naked eye of the human. The size looks exactly the same. It is worth reminding everyone that because the full moon time was in the early morning of July 14, so the moon watching on the evening of July 13th is more suitable. Do not wait until the evening of the 14th, then miss it.

Saturn

At 4:17 in the morning on July 16th, Saturn combined the moon, and Saturn and the moon were about 4 degrees. Saturn's current observation conditions are getting better and better, and it is no longer in the past two months to observe in the middle of the night. At this time, Saturn will rise in less than two hours after sunset, and the rise will become earlier and earlier. On August 15th, Saturn will rush to the sun. As soon as the sun falls, Saturn will rise, and it can be observed all night. One or two days before and after this is the best observation period of Saturn.

At about 4:17 in the morning on July 16th, Saturn and Moon's relative position diagram

Picture source: Star Map Software

This time, the Saturn Month is more suitable for observation on the evening of the 15th. On the same day, more than an hour after dark, Saturn and the moon rose from the horizon of the south of the East. Saturn's brightness is 0.5, etc., which looks bright, slightly darker than the weaver, 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.

Saturn

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 with the earth and the cycle of 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, Saturn's time is about 13-14 days older than the previous year. Jupiter and the earth that are closer to the sun and the earth will be 399 days away from Saturn, and it will be delayed a little more every year every year.

Saturn diagram Source: Star Map Software

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 float in the sea. Saturn is the most beautiful celestial body in the telescope, because it has a beautiful halo, which can be seen with about 30 times the telescope. If the telescope enlarge to more than 100 times, you can see the aura very clearly.

(Beijing Astronomical Museum)

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