MISAO Project

Japanese version       Updated on February 3, 2012

MISAO Project aims to make much use of images taken all over the world for searching and tracking astronomical remarkable objects.

    Feb. 3    Summary of our new dwarf nova MisV1446 discovery.

We summarized our discovery information of a new dwarf nova MisV1446 on Jan. 9, 2012.

    Feb. 3    MisV1447 was already known variable.

Patrick Wils and John Greaves pointed out that the variation of this star has been already known from the NSVS data.

    Feb. 1    Brightening start of optically violently variable quasar MisV1436.

After it became faintest in its history, 19.5 mag, on Jan. 11, it brightened up to 18 mag on Jan. 25 by Diego Rodriguez's observations.

    Jan. 26    New variable star discovered by Masaru Mukai.

Masaru Mukai, Kagoshima, Japan, discovered a new variable star MisV1447. This is his first new object discovery. It will be a Mira type.

    Jan. 24    Light curve of MisV1355.

Light curve of a semi regular variable MisV1355 is published by Tsutomu Fujiwara, Diego Rodriguez and Youichirou Nakashima's observations.

    Jan. 24    Light curves of 4 long periodic variables.

Light curves of 4 long periodic variables by Diego Rodriguez, MisV1026, MisV1117, MisV1160 and MisV1310, are published. The periods are not determined yet.

    Jan. 23    Light curves of 3 long periodic variables.

Light curves of 3 long periodic variables by Tsutomu Fujiwara, MisV0367, MisV0374 and MisV0797, are published. The periods are not determined yet.

    Jan. 23    New observations of dwarf nova MisV1446.

Diego Rodriguez reported it faded down to 17.5 mag on Jan. 17.

    Jan. 9    New observations of optically violently variable quasar MisV1436.

It is 19.1-19.3 mag now, faintest in its history, by Diego Rodriguez and Adolfo San Segundo.

    Jan. 9    Re-brightening of dwarf nova MisV1443

Adolfo San Segundo reported it faded down to 20.12 mag on Nov. 25, then it is re-brightening up to 17.66 mag on Jan. 3.

    Jan. 9    Outburst of an X-ray source.

We discovered a bright new object of 14.1 mag from Youichirou Nakashima's survey images on 2012 Jan. 5. It will be an outburst of an X-ray source 1RXS J074112.2-094529.

    Jan. 9    Possible real-time flare detection of a new flare star.

We discovered a rapid-brightening star from the survey images taken by Youichirou Nakashima On Dec. 17. It brightened rapidly by 2 mag or more, from fainter than 16.8 mag up to 14.7 mag, withiin only 4 minutes. It is possible real-time flare detection of a new flare star. It has already faded down to 18 mag.

    Dec. 27    New observations of T Tau type variable MisV1441.

After the maximum of 14.66 mag on Oct. 28, it turned to be fading and faded down to 16.6 mag on Dec. 16. Then it was 15.82 mag on Dec. 18, so maybe re-brightening.

    Dec. 11    Outburst of a dwarf nova FN And was detected.

Outburst of a dwarf nova FN And was detected in the course of Oku Survey by Youichirou Nakashima on the first survey images of a new 300-mm camera lens. It was 13.5 mag on Dec. 5, 14.1 mag on Dec. 9.

    Nov. 22    Details of New Mira Type Variable MisV1444's Discovery.

Here summarized the details of new Mira type variable MisV1444's discovery.

    Nov. 20    Short term variation of T Tau type variable MisV1441.

Short term variation was detected by time series photometry by Hidehiko Akazawa on Nov. 16, 2011.

    Nov. 12    T Tau type variable MisV1441 is brightening rapidly.

T Tau type variable, a young stellar object with an H-alpha emission, MisV1441 is brightening rapidly. It brightened up to 14.66 mag, approaching to the brightest record ever.

    Nov. 12    Light curve of optically violently variable quasar MisV1436.

Light curve of optically violently variable quasar MisV1436 is updated. During the season between 2010 and 2011, it recorded the faintest magnitude of 19.18 mag in its history, then it recovered up to around 16.5 mag. It keeps fading for the long term from 2007 to 2011.

    Nov. 12    Mira variable MisV0218 is brightening.

Diego Rodriguez and Adolfo San Segundo observed the brightening of a Mira variable MisV0218, which well fits to the period of 380 days.

    Nov. 12    Light curve of MisV1348.

Light curve of a Cepheid variable MisV1348 is published by Tsutomu Fujiwara's observations.

    Nov. 6    Summary of our new dwarf nova MisV1443 discovery.

We summarized our discovery information of a new dwarf nova MisV1443 on Jan. 10, 2011.

    Oct. 23    MisV1357 is a Mira-type variable.

Tsutomu Fujiwara's observations revealed that MisV1357 is a Mira-type variable with a range of 4.2 mag. The period is not determined yet.

    Oct. 23    MisV1273 is a semi regular variable.

Tsutomu Fujiwara's observations revealed that MisV1273 is a semi regular variable with a range of 1.9 mag. The period may be about 140 days.

    Oct. 23    MisV1141 is a Mira-type variable.

Tsutomu Fujiwara's observations and the MISAO Project surveys revealed that MisV1141 is a Mira-type variable with a period of 318 days.

    Oct. 23    MisV0813 is a Mira-type variable.

Tsutomu Fujiwara's observations revealed that MisV0813 is a Mira-type variable with a range of 4.5 mag. The period is not determined yet.

    Please observe these stars!    

We the MISAO Project need the observations of following stars. If you observe these stars, please report to Seiichi Yoshida (comet@aerith.net).
If you have a plan to research these stars or write a paper on these stars, we the MISAO Project can offer you our data. Please make a contact to Seiichi Yoshida (comet@aerith.net).

o Recent Observations

o Star Charts

o Long Periodic Variables Campaign

MISAO Project is operating a continuous observation campaign to obtain light curves and reveal the periods of long periodic variables discovered by the MISAO Project.

o Eclipsing Binaries / Short Periodic Variables Campaign

MISAO Project is operating a time series photometry campaign to obtain light curves and reveal the types and periods of new eclipsing binaries and short periodic variables discovered by the MISAO Project.

o MisV0814

Very peculiar variable. It keeps constant for one year in 2009 by Tsutomu Fujiwara's observations.

o MisV1325

True character is uncertain. Maybe an eclipsing variable, but maybe a RCB type variable which rarely fades out. The variation rarely happens, so steady monitoring is encouraged. No variation was detected in November and December by Adolfo San Segundo and Tsutomu Fujiwara's observations.

o MisV1336

Irregular variation of 0.4 mag in a long term, and a short term small variation of 0.1 mag during several hours, were observed. But no variation was detected by other surveys. Continuous monitoring is encouraged.

o MisV1339

It seems to be a popular semi regular variable in a long term. But a minute-scale short term oscillation of 0.1 mag was also observed. Time series photometry is encouraged.

o MisV1436

Optically violently variable quasar QSO B0133+47. It is recorded as a very faint object at 18-19 mag in the 20th century. However, it was so bright as 14 mag in 2007 November. Then it turned to fade out. It is 19.5 mag now in 2012 January, faintest in its history.

o MisV1441

T Tau type variable, a young stellar object with an H-alpha emission in a star forming region. In this season, it brightened rapidly from summer to autumn, and reached up to 14.66 mag in late October. Such a bright state is after an interval of two years and four months from 2009 July. Short term variation is also detected.

o MisV1443

Dwarf nova brightened up to 12.8 mag in 2011 January. Adolfo San Segundo reported it faded down to 20.12 mag on Nov. 25, then it is re-brightening up to 17.66 mag on Jan. 3.

o MisV1445

It brightened rapidly by 2 mag or more, from fainter than 16.8 mag up to 14.7 mag, withiin only 4 minutes on 2011 Dec. 17. It is possible real-time flare detection of a new flare star. It has already faded down to 18 mag on 2011 Dec. 24.

o MisV1446

Bright new object of 14.1 mag discovered on Jan. 5, 2012. It will be an outburst of an X-ray source 1RXS J074112.2-094529. It has faded down to 17.5 mag on Jan. 17.

    CCD Images Invited    

MISAO Project inviting your CCD images contribution. The offered images are examined by the PIXY (Practical Image eXamination and Inner-objects Identification) system 2 developed in the MISAO Project and searched for new objects such as variable stars. The new objects will be reported to the public as collaborated discovery of the image contributors and the MISAO Project. The magnitude of known variable stars are also measured and reported as MISAO Project observations.

    Guide Books    

Here introduces some know-how of observations and surveys.

    Research Reports    

Here introduces interesting reports researched by the MISAO Project.

    Database & Service    

Here serves the image information in the MISAO Project database. The web service is also available to search images in the database based on R.A. and Decl., or the orbital elements.

    PIXY System 2    

The automated astronomical image examination system developed by Seiichi Yoshida, used in the course of new object survey of the MISAO Project. It is implemented using Java language and it runs both on a Windows PC and a UNIX workstation. Now the version 2 of the PIXY System is being developed.

The PIXY System is a free software. The source files and documents are also available.

PIXY System 2

PIXY System 2

The latest version is 2007 July 15.

o Download Latest Version o

o Screen Shots o

o API References o

o XML and the PIXY System o

o Supported Catalogues o

o Users' Sites o

o Tutorials

o PIXY System 2 C++ Library

The library package of the PIXY System 2 written in C++ language is used in the software products of AstroArts Inc.
StellaGear
for correction of automated telescope instruction.
StellaHunter Professional
for astrometry of detected objects.

    Variable Stars    

Here introduces new variable stars discovered in the course of the MISAO Project, and the researches and analysis of variable stars by the MISAO Project.

o New Variable Stars

The new variable stars discovered from offered images to the MISAO Project. The stars are named MisV after MISAO Project Variable stars. The number reached to 1447 on 2012 Jan. 26.

o Special Notes on Remarkable Stars

Here are the summaries of stars researched and analyzed in the MISAO Project, stars you reported us the information on which, and stars whose interesting features were discovered in the MISAO Project.

o Long Periodic Variables Campaign

MISAO Project is operating a continuous observation campaign to obtain light curves and reveal the periods of long periodic variables discovered by the MISAO Project.

o Eclipsing Binaries / Short Periodic Variables Campaign

MISAO Project is operating a time series photometry campaign to obtain light curves and reveal the types and periods of new eclipsing binaries and short periodic variables discovered by the MISAO Project.

o Recent Observations

o Variable Star Papers

    Comets and Asteroids    

Here introduces the observations of comets and asteroids measured by the MISAO Project.

    Publications    

Here introduces the papers and resumes about the MISAO Project, and the past announcement from the MISAO Project.

Links

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