Scattering meteor

The scattering meteor (さんざいりゅうせい) means the meteor which does not belong to the meteor shower [¹]. Because it is the opposite of group meteor, in other meteors which appeared in the same season, it is the meteor which there is not of the group where an emission point is near [¹]. It will be closer if I say that I occupy the accidental range even if there is it. In addition, other than a big meteor shower, there is the dull meteor shower of the activity called the smaller stream group of stars, and they are removed from the scattering meteor carefully, too.

It is thought that I am comprised of meteor materials in a lot of head periodic comet origin when the parabolic orbit to know with nothing which cannot make the old meteor shower of the majority of the comet origin when evolution goes ahead through the scattering meteor and has spread and the meteor shower which is remarkable because it extremely has a long revolution period and is easy to scatter a meteor is near.

Even if the appearance strength of the scattering meteor all attracts it about the meteor to see with eyes, I can count several an hour. However, generally than a group meteor there are many gloomy things in the scattering meteor, and a number reverses in the neighborhood such as 7-8 even on the day of the meteor shower of Leonids. In addition, as well as a meteor shower, the early morning has more numbers than the evening. There is a more remarkable season change and, in Japan, I begin to increase from early summer and decrease suddenly in autumn after the most new year, and there is extremely few it in spring from the cold winter period. Originally there is it on the day when the meteor hardly flies in midnight because there is not the remarkable meteor shower in about February. These tendencies almost accord with a hypothesis of the real nature of the scattering meteor which they already described.

In addition, there is indication that I gather up some meteors and tend to be easy to make the cluster of the meteor shower when meteor distribution includes small deflection to human eyes. Therefore there is the concern that removes the ingredient of the scattering meteor with the emission point from the scattering meteor as "ecliptic group" near the auspicious day that is not a group meteor closely. Therefore there is take off the scattered meteor materials of the asteroid orbit type that it is easy to see in spring from the cold winter period by mistake from the scattering meteor, doubting it. Because I do not include it, there seems to be the doubt that the number of scattering meteors before the midnight is evaluated too few in spring from the cold winter period in particular.

Footnote

1. ^ ^{a b} About distinction of the group meteor, it is National Astronomical Observatory

Allied item

• Meteor shower

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