VSOLJ (Variable Star Observers League in Japan)

VSOLJ alert mailing list

vsolj-alert latest message
vsolj-alert archive

VSOLJ Variable Star Bulletin online

Variable Star Bulletin online

Representative light curves of variable stars

VSOLJ light curves online!

Index (1920-1995)
VSOLJ light curves (1920-1924)
VSOLJ light curves (1925-1929)
VSOLJ light curves (1930-1934)
VSOLJ light curves (1935-1939)
VSOLJ light curves (1940-1944)
VSOLJ light curves (1945-1949)
VSOLJ light curves (1950-1954)
VSOLJ light curves (1955-1959)
VSOLJ light curves (1960-1964)
VSOLJ light curves (1965-1969)
VSOLJ light curves (1970-1974)
VSOLJ light curves (1975-1979)
VSOLJ light curves (1980-1984)
VSOLJ light curves (1985-1989)
VSOLJ light curves (1990-1995)

Member list on the Internet

link to The National Science Museum (the host of VSOLJ): [ English] [Japanese]

Mail to Makoto Watanabe , the database manager (receives requests for archival data)

VSOLJ Light Curves

Light Curves - 1 (1990) Mira-type variables for JD2445950-2447050


Light curves of Mira type variable star contributed by VSOLJ (Variable Stars Observers League in Japan) members are made for the 1100-day interval from September 6, 1984, to September 11, 1987, JD2445950 - 2447050. Numbers of observers, variable stars, and estimations are 102, 375, and about 35000, respectively. Light curves are plotted with JD versus magnitude. Magnitude range is generally 7, but in the case that the range between the brightes magnitude and the faintest magnitude is larger than 7, for example R And, the range is made larger. The name and the period of the variable star are displayed in the upper left of the graph and the range of variablity is in the upper right of the graph. Those data are taken from the forth edition of General Catalogue of Variable Stars, the 67th, the 68th, and the 69th Name-List of variable stars.

Individual observations on 20 stars which have too few data to describe light curves are listed on page 135. Observed maxima and minima dates and their magnitudes from JD2446000 to JD2447000 are listed on page 136 through 138. On page 134 a new Mira type variable star in Aquila is discussed.

For this compilation, a personal computer NEC PC-9801 VX21 (Intel 80286 CPU), equipped with 40Mbyte hard disk and Epson VP1000 dot-impact printer, was used with softwares (T.Kato, VSOLJ member, see descriptions in a separate section) operating under Microsoft MS-DOS.

VSOLJ publishes "The Variable Star Bulletin" several times per year. Recently we are inputting the data of variable stars observed in Japan from the beginning of this century to now. The number of estimations nearly reaches a million. According as this input project, we are also planning to publish light curves of other type variable stars.

We except light curves of two Mira type variables, one is V686 Mon and the other is 0629-18 CMa discovered by M.Wakuda. The light curve of the former was shown in "The Variable Star Bulletin" No.3 (1987), and the light curve of the latter was shown in "The Variable Star Bulletin" No.8 (1988).

We sincerely thank to M.Iida, Y.Ohkosi, T.Kato, H.Kanazawa, S.Kiyota, M.Yamada for the efforts in the preparation, inputting of the data and computer program development.

                                            Makoto  Watanabe
                                            Kenji   Hirosawa
                                            Keiichi Saijo

Observers and number of estimates (contains Japanese characters)

If you need the data in this list, or you need a complete volume, please contact Makoto Watanabe.

More details of the database

VSOLJ Variable Star Bulletin

list of articles

Contents of No. 22

VSOLJ news (Japanese)


Link to VSOLJ member's pages (original in Japanese, Google translation)

Member's pages

NHK (Nihon-Henkousei-Kenkyuukai) archive of some mails (Japanese)


VSOLJ prediction of Maxima of Mira-type variables


2002 [ Document in Japanese]

2003 [ Document in Japanese]


preprints and reprints

A poster presented at Padova CV Conference


useful programs (mainly for domestic users: mostly for NEC PC9801)

What stars are popular among VSOLJ?

Most observed stars in 1988 (sorry, old data)

Study of variable stars using small telescope (in Japanese)

The text

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