Friday, 5 August 2016

The Perseid Meteors.

The Perseid Meteor shower lasts from late July to early September each year, and are expected to be at a peak on Thursday 11- Friday12 August 2016. The Moon is expected to be quite bright on that night, however it will be setting at about 1.00 am local time on 12 August (this will b the same wherever you are on Earth), which should mean could viewing from most parts of the globe. The shower is expected to be particularly intense this year, possibly reaching 80-150 meteors per hour. The Perseids get their name from the constellation of Perseus, in which the meteors have their radiant (the point from which they appear to originate), which will be rising at about 10.00 pm local time on 11 August.

 The radiant of the Perseid Meteors. National Astronomical Observatory of Japan.

The shower is caused by the Earth passing through the trail of the Comet 109P/Swift-Tuttle, and encountering dust from the tail of this comet. The dust particles strike the atmosphere at speeds of over 200 000 km per hour, burning up in the upper atmosphere and producing a light show in the process. 

The Earth does not need to pass close to 109P/Swift-Tuttle for the meteor shower to occur, it simply passes through a trail of dust from the comet's tail that is following the same orbital path. Comet 109P/Swift-Tuttle itself only visits the Inner Solar System once every 133 years, last doing so in 1992. It is currently 36.4 AU from the Earth (i.e. 36.4 times as far from the Earth as the Sun, more than twice the distance between Neptune and the Sun) on an eccentric orbit tilted at 113° to the plane of the Solar System (or 67° with a retrograde orbit - an orbit in the opposite direction to the planets - depending on how you look at it), that takes it from 0.95 AU from the Sun (95% of the distance at which the Earth orbits the Sun) to 51.22 AU from the Sun (51.22 times as far from the Sun as the Earth, more than three times as far from the Sun as Neptune and slightly outside the Kuiper Belt, but only scraping the innermost zone of the Oort Cloud).

 The orbit of 109P/Swift-Tuttle. Note that this is almost entirely below the plain of the Solar System. JPL Small Body Database Browser.


109P/Swift-Tuttle is currently 36.4 AU from the Sun (i.e. 36.4 times as far from the Sun as Earth and some way outside the orbit of Neptune) ans 37.2 AU from the Earth. The comet is next expected to visit the Inner Solar System in 2126, reaching about 22 950 00 km  (0.15 AU) from Earth in August of that year.

See also...

http://sciencythoughts.blogspot.co.uk/2016/05/the-eta-aquarid-meteors.htmlThe Eta Aquarid Meteors.                              The Eta Aquarid Meteor Shower will peak before dawn on Thursday 5 and Friday 6 May 2016, with up to 45 meteors per hour at it's peak, radiating from the constellation of Aquarius. This does not spend long above the horizon in the Northern Hemisphere at...
http://sciencythoughts.blogspot.co.uk/2016/04/bright-fireball-meteor-seen-over.htmlBright fireball meteor seen over Southern California.                                                    The American Meteor Society has received reports of a bright fireball meteor being seen over much of southern California slightly at about 9.30 pm local time on Monday 23 April 2016 (about 4.30 am on...
http://sciencythoughts.blogspot.co.uk/2016/04/lyrid-meteors-to-be-visible-next-week.htmlLyrid Meteors to be visible next week.         The Lyrid Meteors will be visible between Saturday 16 and Monday 25 April 2006, with peak acticity on Friday 22 April, when the number of meteors may exceed 20 per hour. However with the Full Moon also falling on... 
Follow Sciency Thoughts on Facebook.  

10 comments:

  1. If you are in Jaipur and need beautiful Escort Service in Jaipur or white skin Escort Service in Jaipur then you can simply book call girls in Jaipur from one of the best escort agency named Escort Service in Jaipur. It is No.1 premier escort agency and provide both incall or outcall facility to clients.Please click on the following link to check the official websites Escort Service in Jaipur

    ReplyDelete
  2. Fun Club During the enjoyment we will play romantic music for you then you feel romantic there when you lay on your luxury bed with your escort you will feel like heaven when you see your escort you want to sink in them because our escort are very sexy and they wear small clothes they wear only net clothes for show you her figures they would like to show their figure to their male clients.
    ………… /´¯/) click for supper hot sexy escort Service girls
    ……….,/¯../ /
    ………/…./ /
    …./´¯/’…’/´¯¯.`•¸
    /’/…/…./…..:^.¨¯\
    (‘(…´…´…. ¯_/’…’/
    \……………..’…../
    ..\’…\………. _.•´
    …\…………..(
    ….\…………..\.
    Nainital Escorts Service | Call Girls Service
    Datting Service with Unlimited Fun
    Gwalior Escorts Service | Call Girls Service

    ReplyDelete
  3. ………… /´¯/) click for supper hot sexy escort Service girls
    ……….,/¯../ /
    ………/…./ /
    …./´¯/’…’/´¯¯.`•¸
    /’/…/…./…..:^.¨¯\
    (‘(…´…´…. ¯_/’…’/
    \……………..’…../
    ..\’…\………. _.•´
    …\…………..(
    ….\…………..\.Looking for someone to be with,Escort Service Available Gorgious Call Girls 24X7 and be your partner to Escape from your tired and Bored part of your Life Mind Blowing Experience with Call Girl here your asian Girlfriend,Beautiful Collage Girl Turn Your Dreams Into Reality Fulfill SO Hot and So Sexy,..and willing to cooperate with you and provide anything to everything make all your desire and wild fantasies. a 23 yrs old, Contact Me To Make Appointment Affordable Rates new cute girl has arrived to fulfill your fantasy. I m SWEET. HOTTIE and NAUGHTY.Independent Cheap Rates Escorts Service Available just call or sms me and you will never ever have REGRETS.Welcome to Escorts Agency 100% Satisfaction You can also choose to personalise your experience, with a happy ending of your choice, to end your session on a satisfying note."Fun and Pleasure Book Reasonable Rates
    "Please visit my website for more info and read the sensational reviews by satisfied patrons.i'm PARI SINGH High Profile Call Girl Service If you are seeking companionship with an intimate and sexual young oriental girl, however, you will be delighted in my kind and comfortable service.Hot Sexy Ramp Model Available for Booking I guarantee you will enjoy my smooth curves and soft skin.Beautiful Air Hostess Available You would follow with lots of passionate cuddling and also the full of funs moment.Real Fun With Call Girl Relax, shower, completely stress free and let you feel comfortable as a man should be treated.Hot Genuine Call Girl offer class and good service, without rush ;) I hope I can fulfill your fantasies.Escort Service Available Gorgious Call Girls I am genuine and experienced in this kind of work.I am very sexy with a gorgeous natural body. I have a bright personality I am very friendly and I love to have nice experience and unforgettable moments.Book Cheap Rate Escorts Service I offer class and good service, without rush ;)Everything you know will change once you treat yourself to some treasured moments of time with ME! Call now to book your date with ME and get ready to experience of unbelievable heights. If you would like to make an appointment to see me Just come to my discreet.Enjoy Intimate Connection Escort Service Mind Blowing Experience

    ReplyDelete