How to calculate a meteor shower 50, how to calculate a meteor shower

It's very simple, you know the Hubble telescope, it's a space eye, plus the data is processed by a large computer, and it's a piece of cake to calculate that.

Observing meteor showers must leave the city, meteor showers are definitely not meteors like rain, the flow of the largest meteor shower every year is just over 100 (the 2001 Leonid meteor shower has 3700, it is estimated that it will not be touched in this life), the number of meteors per hour in the suburbs is about 40 of this number, and it is about 2 in the city, so it is normal to observe a meteor shower, the conditions are slightly poor, and only one or two meteors are seen per hour.

Need to face the radiant. I have read in many articles that "many meteors are emitted from radiants", and I am a little suspicious. Because meteors are randomly distributed, if a meteor is emitted from the so-called "radiant" in place A, the same meteor seen in place B will pass in the other direction.

Therefore, the author feels that this statement is unreasonable. However, because the distance between the meteor and the radiant is very related to the short and long trajectory of the meteor, more meteors can be "caught" in the face of the radiant, and more meteors can be seen in the face of the radiant.

Choose a good time. I often see some novices, who can only watch meteor showers in the early hours of the morning, and they are just waiting there when it gets dark. Generally, after the radiant rises, you can tell if the meteor is in a group, so when you decide to see a meteor shower, it is best to check the time when the radiant rises and sleep until that time to see it.

Draw inferences from this to learn this, because meteors cannot be seen even after the radiant falls.

Try to make yourself comfortable. Watching a meteor shower is not looking at galaxies, nebulae, or anything like that, which is waiting for you a minute earlier and a minute later. Meteors are very abominable things that disappear as soon as they appear, so you need to make the most of your observation time.

The best thing to do is to make yourself comfortable, such as lying down or sitting and observing. Standing observation is a last resort.

Learn to distinguish between inside and outside the group. It's easy to say, but some meteors don't even have to be able to immediately distinguish between inside and outside the group. First, the reverse extension of the meteor must pass through the radiant or near (usually about 1 degree), which is easy to learn. Second, what if a meteor has a reverse extension through the radiant or nearby?

Then there are some ways to learn it. First, discriminate speed; Second, the length of the trajectory is determined. If the velocity is very different from the in-swarm meteor (which requires a sense of it), then it is an out-swarm meteor; If a long trajectory is drawn in a row near the radiant, it is not either.

How to estimate meteor brightness. This is also the need to find the "feeling", the brain to store the "brightness" of many stars, and then when the meteor has come out, use the maximum brightness of the meteor to compare with the "record" in the brain, which is generally accurate to a single digit.

Determination of limit magnitude. The International Meteor Organization stipulates that the number of stars in a specific celestial region must be observed, and then the limit magnitude can be found by looking up the table.

In fact, the landlord's request is very easy to complete.

Any astronomy book that introduces meteor showers will inevitably have a list of the 31 major celestial bodies prescribed by the International Meteor Organization. Landlords can search on the Internet (e.g. "The Astronomy Enthusiast's Handbook" is available in the book).

However, I personally think that for people who want to see the excitement, this table is too complicated, and most meteor swarms are not suitable for watching the excitement.

So the individual is shrinking a little.

The first is the Quadrantids, which are at their peak on January 3 every year.

The second is the Perseid meteor shower, which is at its peak on August 12 every year.

The third is the Geminid meteor shower, which is at its peak on December 13.

All three meteor showers are relatively stable, with a maximum flow of around 100, and if the weather conditions are good and you can leave the city to see 20 meteors per hour, it is not a big problem.

The Draconids on October 8 and Leonids on November 17 have erratic flows and can have large outbreaks in some years, although both meteor showers have been relatively quiet in recent years. The traffic is only in the single digits, and there is no observational value.

There's also the Lyrid meteor shower on April 22. The Aquariids on May 6, the Orionids on October 20, and the Taurids around November 10 are also meteor showers with a relatively high flow and are more likely to see meteors on these days.

Generally speaking, there are only a few meteor swarms that are more suitable for watching lively meteors.

The landlord may ask what year it is, every year, and for the next 100 years, these meteor showers will be active on these days.

I don't have any, I still want it.

？？？What meteor shower question, can you tell the whole story?

Isn't it just that meteorites rub against the atmosphere?

On August 12 this year, the Earth passed through the dense dust belt behind Comet Swift Tuttle, the parent body of the Perseid meteor shower, and the dust particles burned and glowed when they rubbed violently against the Earth's atmosphere, forming the spectacular Perseid meteor shower. This year, the best time to observe the Perseid meteor shower is from the evening of August 12 to the early morning of August 13, and interested friends can go to the suburbs to avoid the influence of city lights to watch the meteor shower.

1 Meteor showers can be directly observed with the naked eye, because meteors appear randomly in the sky, the field of view of the telescope is very small, it is difficult to catch meteors, therefore, when watching meteor showers, you do not need to use any telescope;

2 When you go out to see meteor showers in summer, you should bring mosquito prevention medicines, because generally the best observation effect will be in the wild, there are more mosquitoes in the wild environment, even if you are at home, you can't escape mosquito bites, and do a good job of mosquito prevention measures in summer, which provides the possibility for you to watch meteor showers easily and happily;

3 It takes a while for the pupils of the human eye to move from a bright place to a dark place in order to properly exert the eye's ability to see in a dark environment, this process is called dark adaptation, it takes about 10-20 minutes, after dark adaptation, you can see the stars that can be seen within your own visual level, in other words, you can see more meteors. Therefore, it is recommended that when observing meteor showers, try not to turn on the lights, and really need to use a flashlight, and be sure to cover a red cloth in front of the flashlight, so as not to affect the real vision level of the eyes;

4 Whether you are at home or out to observe meteor showers, it is inevitable to stay up late, and it is said that staying up late hurts the liver, but it is a pity not to see such a wonderful and romantic celestial phenomenon as meteor showers and with high scientific value, so everyone must be prepared to stay up late to make supplements. Staying up late is easy to produce hunger, but at this time, don't overeat, increase the burden on the stomach, you can prepare a piece of bread and a carton of milk, in addition, in the hot summer, plus stay up late to watch the stars, it is easy to get angry, make some herbal tea, and girls who love beauty are not so prone to acne the next day;

5 Last but not least, everyone must pay attention to safety, and friends should be careful when traveling to see meteor showers, and try not to go to places with few people. Recommend some good places for everyone, Fuzhou's Drum Mountain, North Peak is a better observation place, on the Drum Mountain, there are more people who climb the Drum Mountain at night, and there will be people 24 hours a day. The North Ridge is an excellent place to observe, avoiding the pollution of the city lights, and the stars are especially bright.