Outstanding Activity of Outstanding Activity of Japanese Amateur AstronomerJapanese Amateur Astronomer

Hitoshi YamaokaHitoshi Yamaoka山岡　均山岡　均

（（ Kyushu UniversityKyushu University ））yamaoka@rc.kyushu-u.ac.jpyamaoka@rc.kyushu-u.ac.jp

2007. 07. 14 at 2007. 07. 14 at HOU2007(NAOJ/Mitaka)HOU2007(NAOJ/Mitaka)

Activity in first half of 20Activity in first half of 20thth century century Meiji era (-1912), Taisho era (-1926)Meiji era (-1912), Taisho era (-1926)

Sunspots, variable stars, …Sunspots, variable stars, …

ASJ (Astronomical Society of Japan: 1908)ASJ (Astronomical Society of Japan: 1908)

OAA (Oriental Astronomical Association: 1920)OAA (Oriental Astronomical Association: 1920)

1936: The year of the First Discoveries (3 1936: The year of the First Discoveries (3

objects!)objects!)

C/1936 O1 (Kaho-Kozik-Lis)C/1936 O1 (Kaho-Kozik-Lis)

CP Lac (Gomi)CP Lac (Gomi)

V630 Sgr (Okabayashi)V630 Sgr (Okabayashi)

Minoru Honda: The GreatMinoru Honda: The Great

12 Comet discovery12 Comet discovery C/1940 S1 (Okabayashi-Honda)C/1940 S1 (Okabayashi-Honda)…… C/1968 Q1 (Honda)C/1968 Q1 (Honda)

11 Nova (& peculiar variable) 11 Nova (& peculiar variable) FH Ser (Nova Ser 1970)FH Ser (Nova Ser 1970)…… V827 Her (Nova Her 1987)V827 Her (Nova Her 1987)

http://www8.plala.or.jp/seijin/http://www8.plala.or.jp/seijin/

(1913 – 1990)

Veterans vs NewbiesVeterans vs Newbies

K. Ikeya K. Ikeya C/1963 A1 (Ikeya)C/1963 A1 (Ikeya) C/1965 S1 (Ikeya-Seki)C/1965 S1 (Ikeya-Seki) 153P/2002 C1 (Ikeya-Zhang)153P/2002 C1 (Ikeya-Zhang)

M. Suzuki M. Suzuki C/2002 O6 (SWAN)C/2002 O6 (SWAN)

Numbers of discovered objects

0

5

10

15

20

25

30

35

40

1935-44

1945-54

1955-64

1965-74

1975-84

1985-94

1995-06

cometnovaSN

59

Nova discoveries: Kingdom JapanNova discoveries: Kingdom Japan

1998 – 2005 1998 – 2005 discoverersdiscoverers

45 people 45 people (total)(total)

29 in northern 29 in northern hemispherehemisphere

25 is Japanese!25 is Japanese!

-- 1998.7-1999.6N Sgr 1998 TakamizawaN Sco 1998 Liller (Chile)N Mus 1998 Liller (Chile)V4444 Sgr YamamotoV382 Vel Williams (Australia)-- 1999.7-2000.6V1493 Aql TagoDD Cir Liller (Chile)V1494 Aql Pereira (Portogal)V4642 Sgr SakuraiV463 Sct Haseda(CI Aql Takamizawa, Yamamoto)-- 2000.7-2001.6V455 Pup KanatsuV4643 Sgr Liller (Chile)V1548 Aql Collins (England)V1178 Sco Haseda-- 2001.7-2002.6V2274 Cyg NakamuraV2275 Cyg Tago HatayamaV4739 Sgr Pereira (Portogal)V709 Cep MISAOV4740 Sgr Pereira (Portogal) Liller (Chile)V1039 Cen Liller (Chile)V2540 Oph Haseda NakamuraV4741 Sgr Liller (Chile)

-- 2002.7-2003.6V4742 Sgr Liller (Chile)V4743 Sgr HasedaV4744 Sgr Tabur (Australia)V4745 Sgr Brown (Australia) Yamamoto-- 2003.7-2004.6V2573 Oph Takao Tabur (Australia)V475 Sct NishimuraV5113 Sgr Brown (Australia)DE Cir Liller (Chile)V5114 Sgr Nishimura Nakamura Liller (Chile)V2574 Oph Takao Nakamura-- 2004.7-V1186 Sco ASAS-III (Chile)V1187 Sco TakaoV574 Pup Tago SakuraiV2361 Cyg Nishimura

Supernovae: advanced recentlySupernovae: advanced recently

SN 2002ap: Win-Win collaborationSN 2002ap: Win-Win collaboration discoverydiscovery ：： 1/29.398 (Y. Hirose)1/29.398 (Y. Hirose) confirm:confirm: 　　　　 　　　　 30.382 (R. 30.382 (R.

Kushida)Kushida) announcement:30.80 announcement:30.80 (IAUC 7810)(IAUC 7810) spectroscopy:spectroscopy: 　 　 31.4 (Gunma/Bisei)31.4 (Gunma/Bisei)

　　 　　 30.9 (ESO WHT), 30.9 (ESO WHT),

　　 　　 31 (Wise)31 (Wise)

SN 2006jc: another win-winSN 2006jc: another win-win

K. Itagaki

ASJ Discovery Award

Activity other than discoveryActivity other than discovery

Active observation for a long periodActive observation for a long period Detection & quick reporting of Detection & quick reporting of

transient objectstransient objects New Award: the ASJ Award for the New Award: the ASJ Award for the

Outstanding Achivement by Amateur Outstanding Achivement by Amateur