Sunspot Relative Numbers and Prominence Data by Ken'ichi Fujimori

Location: Suwa City, Nagano Prefecture, Japan

Instruments:

10cm reflector (direct visual observation, 1954-1970)

6cm refractor (drawing by projection, 1957 July - 1963 May)

8cm Nikon refractor (drawing by projection, 1963 June - present)

8cm Goto refractor + prominence adaptor (passband=4Å, 1978 - 1995 January)

8cm Goto refractor + Hα filter (passband=0.7Å, 1995 February - present)

Telescopes currently in use:
From left, Nikon 8cm (sunspot drawings),
Goto 8cm (prominence observation), and
Goto 10cm (sunspot photographs)

Sunspot Relative Numbers

seeing:	5=best, 1=worst
remarks:	C=cloudy, R=rain, S=snow, M=missing observation
	Naked-eye sunspots: their counts and visibility (a=clear, b=fair, c=marginally visible)

2020	2021
2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
1990	1991	1992	1993	1994	1995	1996	1997	1998	1999
1980	1981	1982	1983	1984	1985	1986	1987	1988	1989
1970	1971	1972	1973	1974	1975	1976	1977	1978	1979
1960	1961	1962	1963	1964	1965	1966	1967	1968	1969
				1954	1955	1956	1957	1958	1959

Active Regions

2010	2011	2012	2013	2014	2015
2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
1990	1991	1992	1993	1994	1995	1996	1997	1998	1999
1980	1981	1982	1983	1984	1985	1986	1987	1988	1989
1970	1971	1972	1973	1974	1975	1976	1977	1978	1979
				1964	1965	1966	1967	1968	1969

Prominences and Flares

prominence types (Pettit, 1943)

1: active, 2: eruptive, 3: sunspot, 4: tornado, 5: quiescent, 6: coronal

2010	2011	2012	2013	2014	2015
2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
1990	1991	1992	1993	1994	1995	1996	1997	1998	1999
1980	1981	1982	1983	1984	1985	1986	1987	1988	1989
								1978	1979

Last updated: 2024 August 1