Activities of Astronomy and Meteorology Club

Saitama Prefectural Koshigaya-Kita Senior High School

Astronomy and Meteorology ClubAkiko Ino, Kanako Susuki, Ayaka Moro,

Ryota Okuma, Takahiro Takeuchi

1.Main 1.Main Activities of our of our clubclub

　　

ObservationObservation

The place in the The place in the left picture was left picture was at Tatamidaira in at Tatamidaira in Mt. Norikura. Mt. Norikura.

Observations in 2006Observations in 2006

January 3 - 4: Quadrantids January 3 - 4: Quadrantids * Successful* Successful May 4 - 5: Eta-Aquarids May 4 - 5: Eta-Aquarids * Not observe by bad weather. * Not observe by bad weather. July 30 - August 1: Delta-Aquarids and Perseids July 30 - August 1: Delta-Aquarids and Perseids * Successful* Successful October 20 - 21: Orionids October 20 - 21: Orionids * Not observe by bad weather.* Not observe by bad weather. December 14 - 15: Geminids December 14 - 15: Geminids * Not observe by bad weather.* Not observe by bad weather. December 31: Lunar Occultation of Pleiades on. December 31: Lunar Occultation of Pleiades on. * Successful* Successful

Observations in 2007Observations in 2007

““Lunar Eclipse” on 28th AugustLunar Eclipse” on 28th August

Meteor streams, for example Meteor streams, for example “Perseids” and “Geminids”“Perseids” and “Geminids”

School FestivalSchool Festival

Display our Display our researches and researches and summer camp's summer camp's report report

Project a handmade Project a handmade planetariumplanetarium

Researches in 2006Researches in 2006

"Light Curves of Meteors" "Light Curves of Meteors"

"Lunar Occultation of Pleiades." "Lunar Occultation of Pleiades."

Other activitiesOther activities

2 2 Light Curves of MeteorsLight Curves of Meteors

Introduction

We observed Quadrantids which is one We observed Quadrantids which is one of the three major meteor streams in of the three major meteor streams in January, 2006.January, 2006.

Light curves of meteors are divided into Light curves of meteors are divided into “Middle type” and “Second half type”.“Middle type” and “Second half type”.

Observation Data

The video observation data of The video observation data of 2001 Leonid meteor storm . 2001 Leonid meteor storm .

(Preserved by “Astro-classroom for (Preserved by “Astro-classroom for high school students (Astro-HS)” )high school students (Astro-HS)” )

Spectrum data which was Spectrum data which was observed by our seniors.observed by our seniors.

Variety of “Meteor Light Curve”

Meteor Light Curve

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Apparition Height km〔 〕

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A; “First half type”

B; “Middle type” Meteor Light Curve

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Meteor Light Curve

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Meteor Light Curve

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B1; “Pudding type”

B2; “Mountain type”

B3; “Triangular type”

C; “Second half type”

Meteor Light Curve

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Meteor Light Curve

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Meteor Light Curve

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C1; “Normal type”

C2; “Cliff type I”

C3; “Cliff type II”

Meteoroid massFig. 2 Meteoroid Mass

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-1

-4-3-2-101

Absolute Magnitude at maximum luminosity

Inte

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AB1B2B3C1C2C3

Entry angle to atmosphere

0% 20% 40% 60% 80% 100%

4h00m～5h30m（32～17°）

0h20m～2h00m（77～57°）

Obs

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Tim

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Fig. 3 Entry Angle to atmosphere

AB1B2B3C1C2C3

Light-emitting element

C1; “Normal type”

C2; “Cliff type I” C3; “Cliff type II”

Thank you for listening to our speech.