How to write a paragraph on a passing shower of 2020 June
Answers
Answer:
You can add your own experience of this month of June of 2020 and of other passing year and write fully truth
Hope this will help you
Explanation:
June is another slow month for meteor activity. There are no major showers active in June and only the Anthelion source can be counted on for continuous activity. Sporadic rates continue to remain slow as seen from the mid-northern hemisphere (45 N) with only half the rates seen from the southern hemisphere. As seen from the southern tropics (25 S) sporadic rates continue to be strong this month with morning hourly rates exceeding 10.
During this period, the moon reaches its first quarter phase on Saturday May 30th. At this time, it is located 90 degrees east of the sun and sets near 02:00 local daylight saving time (LDST). As the week progresses the waxing gibbous moon will start intruding on the morning sky, shrinking the opportunity to view under dark conditions which each passing night. Toward the end of this period moon set and the start of morning twilight will be simultaneous. The estimated total hourly meteor rates for evening observers this week is near 2 for those viewing from the northern hemisphere and 3 for those located south of the equator. For morning observers, the estimated total hourly rates should be near 8 as seen from mid-northern latitudes (45N) and 13 as seen from tropical southern locations (25S). Evening rates are reduced during this period due to moonlight. The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness, and experience in watching meteor activity. Note that the hourly rates listed below are estimates as viewed from dark sky sites away from urban light sources. Observers viewing from urban areas will see less activity as only the brighter meteors will be visible from such locations.
The radiant (the area of the sky where meteors appear to shoot from) positions and rates listed below are exact for Saturday night/Sunday morning May 30/31. These positions do not change greatly day to day so the listed coordinates may be used during this entire period. Most star atlases (available at science stores and planetariums) will provide maps with grid lines of the celestial coordinates so that you may find out exactly where these positions are located in the sky. A planisphere or computer planetarium program is also useful in showing the sky at any time of night on any date of the year. Activity from each radiant is best seen when it is positioned highest in the sky, either due north or south along the meridian, depending on your latitude. It must be remembered that meteor activity is rarely seen at the radiant position. Rather they shoot outwards from the radiant, so it is best to center your field of view so that the radiant lies at the edge and not the center. Viewing there will allow you to easily trace the path of each meteor back to the radiant (if it is a shower member) or in another direction if it is a sporadic. Meteor activity is not seen from radiants that are located far below the horizon. The positions below are listed in a west to east manner in order of right ascension (celestial longitude). The positions listed first are located further west therefore are accessible earlier in the night while those listed further down the list rise later in the night.
Radiant Positions at 22:00 LDST
Radiant Positions at 22:00 Local Daylight Saving Time
Radiant Positions at 01:00 DLST
Radiant Positions at 1:00 Local Daylight Saving Time
Radiant Positions at 04:00 LDST
Radiant Positions at 4:00 Local Daylight Saving Time
These sources of meteoric activity are expected to be active this week.
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The tau Herculids (TAH) are an irregular shower not active every year. They are best known for being associated with comet Schwassmann-Wachmann 3 and the strong display seen in 1930. Due to recent activity from the comet, this shower could produce more activity in the upcoming decade. The radiant is expected to lie near 15:09 (227) +40. This area of the sky is located in northern Bootes, just east of the 3rd magnitude star known as Nekkar (beta Bootis). This position is not close to the star tau Herculis, for which this shower is named. Apparently, the discoverers of this display placed the radiant further east toward Corona Borealis and Hercules. It is also possible that past displays from this source had a different radiant area. This area of the sky is best placed near midnight LDST, when it lies high overhead for observers located in mid-northern latitudes. These meteors are not well seen from the southern hemisphere as the radiant does not rise high into the northern sky as seen from the southern hemisphere. With an entry velocity of 15 km/sec., the average tau Herculid meteor would be of very slow velocity.