The "Mysterious Comet" is seen for the first time in 70,000 years and is closest to Earth in December

It is only possible to see it once in 70,000 years, and the comet that claims to be the brightest of the year is coming! Taiwan's Tainan Nanying Planetarium yesterday (3) posted on Facebook that the "Number C/2021 A1 (Leonard)" comet is approaching the Earth, and it is estimated that the maximum brightness in mid-December will reach 4 to 5, and there is a chance to see it with the naked eye or small binoculars, and the Nanying Planetarium also photographed this mysterious comet, allowing astronomy fans to enjoy it first.

"C/2021 A1" orbits the sun for 70,000 years 12/13 the closest to Earth!

According to the Nanying Planetarium, "C/2021 A1" is the first comet to be discovered by the astronomical community this year, and on January 3 this year, the American astronomer Gregory Leonard was found at the Mt. Lymon Observatory in Arizona. Lemmon Sky Center Observatory) found.

The current brightness of "C/2021 A1" is about 7 to 8, moving towards the constellation of Shepherd in the constellation of Hound, and can be photographed with a large telescope before sunrise in the early morning. However, "C/2021 A1" will be the closest to The Earth on December 13, and the estimated brightness can be increased to 4th magnitude visible to the naked eye, located near the constellation of Ophiuchus, seen in the low southwest after dusk sunset, and the lower elevation angle needs to find an unobstructed location near the horizon to be suitable for viewing; according to the orbital parameters, it is estimated that it will take 70,000 years for the comet to orbit the sun.

The name of the comet is taken like this! Nam Ying Planetarium exposed the naming principle

In addition, the Nanying Planetarium revealed the naming method of the comet, stating that "the C in the comet's name indicates that it is an aperiodic comet (or a period of more than 200 years)"; 2021 A1 is the time it was discovered, "2021 is the year of discovery, A represents the first half of January (A, B, C, D... In order, every half month, the number 1 is the first comet discovered during that time period."