Home Page Updated on December 16, 2020
MisV0380
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| R.A. | 17h59m05s.61 | |
| Decl. | -16o55'33".0 | (2000.0) |
| Mag. | 12.8-[14.4C | |
| Type | M |
Digitized Sky Survey GIF image (15 x 15 arcmin)
NSVS Light Curve (NSVS 16632225)
Discovery Information
It was detected by the PIXY system as one of the candidates of new variable stars from images taken by Ken-ichi Kadota, Ageo City, Saitama, Japan, then confirmed by Seiichi Yoshida.
Special Notes
Seiichi Yoshida and John Greaves found that it is not recorded in any of GSC 1.1, USNO-A2.0, IRAS, 2MASS, UCAC1, GSC 2.2. Greaves investigated the past images at the USNO Flagstaff Station Integrated Image and Catalogue Archive Service, but no star was found within 3 arcsec. It implies the star may be a cataclysmic variable. So Greaves called for observations in the MSDG-MISAO Campaign.
Mike Simonsen, Rod Stubbings and C. P. Jones reported that is was fainter than 14.2 mag visually. But it was bright as 12.39 mag on the unfiltered CCD image taken by Fred Velthuis. In addition, Taichi Kato identified with MSX5C G011.9229+03.4421. Therefore, it is probably a Mira-type variable.
Yoshida revealed that no star is found at the position on the DSS 1 Bj-band image. There are two DSS 2 R-band images. A star is found on one of them, but not uncertain on another image. Due to the high density of stars, past image investigation was hard.
Research and Publication
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New Variable Stars Discovered in the MISAO Project VII: MisV0351-MisV0400
IBVS 4842
Yoshida, S.; Kadota, K.; Kato, T.
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Mike Simonsen's charts
http://joevp.20m.com/cgi-bin/i/charts/sxncharts/MisV0380_Nsxn.gif
http://joevp.20m.com/cgi-bin/i/charts/sxncharts/MisV0380_Rsxn.gif
http://joevp.20m.com/cgi-bin/i/charts/sxncharts/MisV0380_sxn.gif
Light Curve
12.3 +--------------------------------------------------------+
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| vv |
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14.5 +--------------------------------------------------------+
2451237 2452120
1999 Feb. 27 2001 July 29
Observations by MISAO Project
| Date | Mag | Filter | Observer |
|---|---|---|---|
| 1999 Apr. 8.74153 | [14.4 | C | Ken-ichi Kadota |
| 1999 Apr. 8.74208 | [14.2 | C | Ken-ichi Kadota |
| 1999 Apr. 30.75550 | [14.3 | C | Ken-ichi Kadota |
| 1999 Apr. 30.75593 | [14.2 | C | Ken-ichi Kadota |
| 1999 Aug. 31.55354 | 12.8 | C | Ken-ichi Kadota |
| 1999 Aug. 31.55398 | 12.8 | C | Ken-ichi Kadota |
| 2001 June 19.57918 | 12.4 | C | Fred Velthuis |