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The main characteristics of the Perseid meteor shower in August

4hw.com.cn: it's said that if you make a wish in the face of the meteor shower, your wish will come true. However, few people will see the meteor shower. In August, however, there will be the Perseid meteor shower called "Saint Laurent's tears", which will cross the northeast sky. Come and have a look.

2018 meteor shower schedule

January quadrant meteor shower, the expected date of occurrence is about 3-4.

The April Lyrid meteor shower is expected to occur from 21 to 22.

The ETA meteors shower in Aquarius in May is expected to occur from 21 to 22.

June Lyrid meteor shower is expected to occur from 14th to 16th.

The July delta meteor shower in Aquarius is expected to occur from 28th to 29th.

Capricorn meteors (capricornids) from July to August are expected to occur from 29th to 30th.

The Perseids in August is expected to occur from the 12th to the 13th.

October draconids, the expected date of occurrence is about 12-13.

Orionids, the Orionids from October to November, is expected to occur from the 21st to the 22nd.

November Leonids, the expected date of occurrence is about 17-18.

Geminids, the Geminids in December, is expected to occur from the 13th to the 14th.

December's little bear meteor shower is expected to occur from the 17th to the 26th.

Main characteristics of Perseid meteor shower

The Perseid meteor shower is not only numerous, but also almost never absent from the summer sky. It is the most suitable meteor shower for non professional meteor observers, ranking first among the three major periodic meteor showers of the year. Comet Swift-Tuttle is the mother of the Perseid meteor shower. Before and after the comet passed perihelion in 1992, the Perseid meteor shower was brilliant, with the number of meteors reaching more than 400 per hour.

The mother object of the Perseid meteor shower is comet swift middot Tuttle with a 133 year period. The comet was discovered by Louis swift and Tuttle in 1862. Later, Giovanni Schiaparelli, an Italian astronomer, suggested that it might be the mother of the Perseid meteor shower. It is also the first time that comets have been identified as the parent object of meteor showers. At that time, it was predicted that comet swift middot Tuttle would be periodically regressed around 1982, but it was not observed.

At maximum, 30-60 meteors can appear in an hour, which is the most active period of the year. In the days before and after the climax, there are more than 10 per hour. Due to the summer vacation, the night temperature is also relatively high, known as one of the most easily observed meteor showers.

The brightness of meteors is generally above second class, similar to that of the Big Dipper. Occasionally, there will be colorful firestars, which are as bright as Venus. Because there are many bright meteors, even in urban areas with serious light damage, sometimes many meteors can be seen. In the ideal observation area, nearly a thousand meteors may be seen all night.

The Perseid meteor shower is a high-speed meteor group with a high speed of 59 km / s, 45% of which has a wake. And may be in the middle of the passage more bright, easy to form meteor marks.