What constellation is the rarest in the world?

Which constellation is the rarest meteor shower?

Lyra meteor shower is considered to be the rarest.

Every August 12, the Lyra meteor shower will reach its peak, and a large number of meteors will appear in the sky at this time. This is because the mother meteor shower group, the "secondary meteor shower group", meets the earth on this day, making the meteor density extremely high. The Lyra meteor shower has attracted the attention of astronomy enthusiasts because of its rarity and high observation difficulty.

Besides the Lyra meteor shower, andromedids is also considered to be very rare. Andromeda will arrive on schedule every year from 654381October 8th to1October 5th 165438. Lyra meteor shower is a kind of meteor shower with a very long observation history, which lasts for more than 2600 years. Its parent body is comet c/1861g1sheqier. Compared with the traditional three meteor showers, Lyra meteor shower has less flow, but more bright meteors, especially fireballs.

Basic introduction

Lyra is one of the most splendid constellations in the northern galaxy, named after its appearance resembling the ancient Greek harp. It is one of the 48 constellations listed by Ptolemy, an ancient Greek astronomer, and one of the 88 modern constellations designated by the International Astronomical Union. Lyra is small, but it is not difficult to identify, because its main star Vega is one of the vertices of the summer triangle. Seen clockwise from the north, Lyra is surrounded by Draco, Hercules, Fox and Cygnus.

Center position: right ascension 18: 50, declination 36. There are 53 stars in the constellation with visual magnitude greater than 6, and 8 of them have visual magnitude greater than 4. Lyra has a first-class cluster, and the orbital debris of comet 186 1 forms the Lyra meteor shower, and the radiation point is near K star. Generally, it appears from April 19 to 23rd every year, and 22nd is usually the largest day. Compared with the traditional three meteor showers, the Lyra meteor shower has a small flow, but there are many bright meteors and fireballs (the above contents are for reference only).