What is the mother comet of Aquarius meteor shower?

The frequency of Aquarius meteor shower is three times a year, namely Aquarius η meteor shower, Aquarius δ southern branch meteor shower and Aquarius δ northern branch meteor shower. Do you know what is the mother comet of Aquarius meteor shower? Then let the constellation knowledge reveal the secret for everyone!

The mother comet of Aquarius meteor shower is: Halley's comet Aquarius meteor shower (scientific name Aquarius) is a meteor shower with the radiation point near Aquarius, which occurs three times a year: the first time is EtaAquarids, which appears from April 19 to May 28 every year and reaches its climax on May 5; The second meteor shower, called the Southern Branch of Aquarius, occurs from July 12 to August 19 every year and reaches its climax on July 28th. The third time is called the northern branch meteor shower of Aquarius, which appears from July 15 to August 25th every year and reaches its climax on August 8th.

Discovery of Halley's Comet: Named after edmund halley (period determined). Orbit parameters: 2449400.5 (1February 1994 17), apogee: 35. 1AU(20231February 9), perihelion: 0.588. Next perihelion: 20665438+July 28th, 0) Semimajor axis: 17.8AU Eccentricity: 0.967 orbital period: 75.3a orbital inclination: 162.3.

Physical characteristic size: 15×8km, 1 1km (average) mass:10/5kg Average density: 0.6 (estimated range: 2.2d to 1.5g/cm)

Introduction to Halley's Comet Halley's Comet (periodic comet list number: 1P/Halley) is a periodic comet, which orbits the sun once every 76. 1 year and can be seen by the naked eye. It is named after the British physicist edmund halley (1656- 1742) who measured its orbit data for the first time and successfully predicted the regression time.

The orbital period of Halley's Comet is 76 ~ 79 years, and the next perihelion will be July 28th, 20061year. Halley's comet was the first periodic comet recorded. At the latest in 240 BC, or 466 BC, there were clear records in China, Babylon and medieval Europe, but I didn't know it was the reappearance of the same comet. According to Zhu Wenxin's textual research, there are 29 records from the seventh year of Qin Shihuang (240 BC) to the second year of Xuantong in Qing Dynasty (19 10), which are consistent with the calculated results.

Halley's comet is the only short-period comet that can be seen directly from the earth with the naked eye, and it is also the only comet that can be seen twice by the naked eye in one's life. Other comets visible to the naked eye may be more spectacular and beautiful, but those are comets that only appear once in a thousand years. Halley's Comet last returned in 1986, and the next return will be in 206 1 year. During the return of 1986, Halley's comet became the first comet to be observed in detail by spacecraft, providing first-hand information on the structure of comet nucleus and the formation mechanism of comet tail. These observations support some long-standing assumptions about the structure of comets, especially Fred Hugh Park Jung Su's "dirty snowball" model, and correctly speculate that Halley's comet is a mixture of volatile ice, such as water, carbon dioxide and ammonia, and dust. The information provided by this task has also greatly reformed and reconfigured the idea of these materials; For example, it is understood that the surface of Halley's comet is mainly dust, with no volatile matter, and only a small part is ice.

Comet Halley returns to the core of the solar system every 76 years, losing about 6 meters of ice, dust and rocks every time. The tail of Halley's comet is composed of these fragments, and the fragments scattered in the comet's orbit produced the Aquarius π meteor shower and Orion meteor shower on1October 2 1 day.

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