Home Page Updated on December 16, 2020
MisV1262
|
| R.A. | 22h24m06s.65 | |
| Decl. | +54o45'33".4 | (2000.0) |
| Mag. | 12.5-14.5C | |
| Type | M: |
= IRAS 22221+5430 22h24m06s.2 +54o45'29" Ellipse:18x8" P.A.:92 Flu
x(12):0.3635 Flux(25):0.1780 Flux(60):<1.352 Flux(100):<11.88 Va
r:4%
= MSX5C G102.6786-02.2130 22h24m06s.46 +54o45'31".7 InScanError:2.9"
CrossScanError:2.4" Flux(A):0.23806
= GSC2.2 N0122113238856 Fmag 14.8 (red) Jmag 17.8 (blue)
Digitized Sky Survey GIF image (15 x 15 arcmin)
NSVS Light Curve (NSVS 3442991)
Discovery Information
Seiichi Yoshida, MISAO Project; Nobuo Ohkura, Okayama, Japan; and Ken-ichi Kadota, MISAO Project, discovered a new variable star MisV1262.
It was picked up by Seiichi Yoshida from the candidates of new variable stars detected by the PIXY system 2 from images taken by Nobuo Ohkura, and confirmed by Ken-ichi Kadota.
The identification is researched by Taichi Kato (Kyoto University), Seiichi Yoshida, and other contributors.
Special Notes
It was announced as a possible semi-regular variable with a small amplitude at the discovery. But further observations revealed it is a Mira type variable with large amplitude.
Unexpectedly, V-band observations caught a 14.9 mag star at the position of MisV1262, when it faded down to 14.1 mag by unfiltered CCD observations. It was almost constant in V-band.
Investigating DSS images and USNO-B1.0 catalog revealed that there is a complex of three stars within 15 arcsec at the position of MisV1262, and a nearby star becomes brighter than MisV1262 in B-band and V-band. A 14.9 mag star in V-band images must be the nearby star.
The NSVS light curve also shows a rough variation of this star with a range of 12.8 - 14.1 mag. However, the NSVS data must be blending of the complex, and must not show the total variation.
Research and Publication
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Complex Around a Mira Type Variable MisV1262
Yoshida, S.; Ohkura, N.; Kadota
Light Curve
12.4 +--------------------------------------------------------+
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14.6 +--------------------------------------------------------+
2451730 2452969
2000 July 4 2003 Nov. 25
Observations by MISAO Project
| Date | Mag | Filter | Observer |
|---|---|---|---|
| 2000 Aug. 29.52949 | 12.5 | C | Nobuo Ohkura |
| 2000 Oct. 4.50875 | 12.9 | C | Nobuo Ohkura |
| 2000 Oct. 4.51060 | 12.8 | C | Nobuo Ohkura |
| 2000 Oct. 4.51247 | 12.8 | C | Nobuo Ohkura |
| 2000 Oct. 4.51432 | 12.9 | C | Nobuo Ohkura |
| 2001 Aug. 27.59541 | 12.6 | C | Nobuo Ohkura |
| 2001 Aug. 27.59727 | 12.5 | C | Nobuo Ohkura |
| 2001 Aug. 27.59912 | 12.5 | C | Nobuo Ohkura |
| 2001 Aug. 27.60097 | 12.5 | C | Nobuo Ohkura |
| 2001 Sept. 24.52961 | 13.8 | C | Nobuo Ohkura |
| 2001 Sept. 24.53060 | 13.8 | C | Nobuo Ohkura |
| 2001 Oct. 12.49762 | 13.5 | C | Nobuo Ohkura |
| 2001 Oct. 13.47699 | 13.1 | C | Nobuo Ohkura |
| 2001 Oct. 13.47896 | 13.2 | C | Nobuo Ohkura |
| 2001 Oct. 13.48094 | 13.3 | C | Nobuo Ohkura |
| 2003 Sept. 14.55760 | 14.4 | C | Nobuo Ohkura |
| 2003 Sept. 16.54508 | 14.4 | C | Nobuo Ohkura |
| 2003 Sept. 16.54705 | 14.5 | C | Nobuo Ohkura |
| 2003 Sept. 16.54902 | 14.3 | C | Nobuo Ohkura |
| 2003 Sept. 26.51703 | 14.1 | C | Nobuo Ohkura |
| 2003 Sept. 26.51899 | 14.4 | C | Nobuo Ohkura |
| 2003 Sept. 26.52096 | 14.0 | C | Nobuo Ohkura |
| 2003 Sept. 27.50436 | 14.2 | C | Nobuo Ohkura |
| 2003 Sept. 27.50632 | 14.0 | C | Nobuo Ohkura |
| 2003 Sept. 27.50829 | 14.1 | C | Nobuo Ohkura |
| 2003 Sept. 29.49911 | 14.0 | C | Nobuo Ohkura |
| 2003 Sept. 29.50108 | 14.1 | C | Nobuo Ohkura |
| 2003 Sept. 30.48624 | 14.0 | C | Nobuo Ohkura |
| 2003 Sept. 30.48821 | 14.3 | C | Nobuo Ohkura |
| 2003 Sept. 30.49017 | 14.1 | C | Nobuo Ohkura |