Visible to the naked eye from February until the middle of May.It passed the perihelion on March 20, 1970.This bright comet with a long tail is considered by many to be one of the most beautiful comets in the 20th century.It was found in the far south sky.In the first week of February, the brightness was 5, and the comet tail was 1 degree long.At the end of the month, the brightness is 3.5, and the comet tail is 2 degrees long.In the middle of March, the brightness reached first grade, and the comet tail was more than 10 degrees long.At the end of March, after passing Aquarius and Pegasus, it became a fascinating celestial body in the dawn night sky of the Northern Hemisphere, with a brightness of 0, which is quite far from the sun.Through the telescope, it can be observed that the bright matter ejected from the comet nucleus forms a strange spiral jet.In the second week of April, the brightness was 1 to 2, and two comet tails were pulled out, with the longest extension of 20 degrees.At the end of the month, it has a brightness of 3. It is located in Cassiopeia and becomes a polar celestial body, which can be seen all night.At the beginning of May, the brightness of the comet head was 4 degrees, but the tail was still 10 to 15 degrees long.It disappeared from the naked eye around May 20.
Comet Bennett isLong-period comet, discovered by John Bennett on December 28, 1969, also known as“1970 Comet” “1970 II”At that time, the comet was about 2 astronomical units (AU) away from the sun.On March 20, 1970, the comet passed through the perihelion, and on March 26, the comet was closest to the Earth. From the first ten days of February to the middle of May, the comet can be directly observed with the naked eye. The maximum brightness of the comet is about 0.Comet Bennett was last observed on February 27, 1971.
Naming Source
Announce
edit
1969 i (comet bennett) is the ninth comet discovered in 1969.Once it is observed that this comet passes through the perihelion and its orbit is determined, it will be given a permanent name according to the Roman numerals of the year and order of its passing through the perihelion (the number is usually compiled two years after the end of the year), so comet 1969i becomes Comet 1970 II (it is the second comet passing through the perihelion in 1970).For another example, Comet Shoemaker Levy 9 is named 1993e and 1994X respectively[1]。
