Home Page Updated on December 16, 2020
MisV1023
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| R.A. | 19h56m53s.59 | |
| Decl. | +36o48'06".3 | (2000.0) |
| Mag. | 10.5-11.5C | |
| Type | SR: |
= IRAS 19550+3639 R.A.=19 56 53.41 Decl.=+36 48 04.8 (21 x 4", p.a.
=68) flux(12)=1.94 flux(25)=1.22 flux(60)=<0.79 flux(100)=<12.62
7% variable
= 2MASS 195653.668 +364807.56 (2000.0) 5.957 0.000 0.000
Digitized Sky Survey GIF image (15 x 15 arcmin)
NSVS Light Curve (NSVS 8451048)
Discovery Information
Seiichi Yoshida, MISAO Project; Nobuo Ohkura, Okayama, Japan; and Ken-ichi Kadota, Ageo, Saitama, Japan, discovered a new variable star MisV1023.
It was picked up by Yoshida from the candidates of new variable stars detected by the PIXY system from images taken by Ohkura comparing with images taken by Kadota. Kadota and Yoshida judged it as a real variable star.
NSV 12608 is 3.1 arcmin from MisV1023. No star brighter than 14.8 mag was detected at the position of NSV 12608. However, Dr. Brian Skiff and John Greaves researched the chart in Nassau & Cameron, ApJ 119, 175 (1954) and revealed that MisV1023 is a new variable star.
The identification with the 2MASS data is by Taichi Kato.
Special Notes
In 2000, when the position of V1462 Cyg was inaccurate, we the MISAO Project discovered two new variable stars around it. One of them is identified with NSV 12600. We thought V1462 Cyg ans NSV 12600 are the same star (IBVS 4814), and announced another star as a new variable star MisV1023.
In 2003, the GCVS editors revised the position of V1462 Cyg (2003AstL...29..468S). The revised position is different from NSV 12600, but same as MisV1023. Therefore, it was revealed that MisV1023 was not a new variable.
Light Curve
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11.6 +--------------------------------------------------------+
2451276 2451784
1999 Apr. 7 2000 Aug. 27
Observations by MISAO Project
| Date | Mag | Filter | Observer |
|---|---|---|---|
| 1999 Apr. 30.69260 | 11.1 | C | Ken-ichi Kadota |
| 1999 Apr. 30.69302 | 11.1 | C | Ken-ichi Kadota |
| 1999 July 7.67861 | 11.4 | C | Ken-ichi Kadota |
| 1999 July 7.67904 | 11.2 | C | Ken-ichi Kadota |
| 1999 Aug. 1.61182 | 11.5 | C | Ken-ichi Kadota |
| 1999 Aug. 1.61227 | 11.5 | C | Ken-ichi Kadota |
| 1999 Aug. 3.65602 | 11.4 | C | Ken-ichi Kadota |
| 1999 Aug. 3.65657 | 11.5 | C | Ken-ichi Kadota |
| 1999 Aug. 31.63065 | 10.9 | C | Ken-ichi Kadota |
| 1999 Aug. 31.63108 | 10.9 | C | Ken-ichi Kadota |
| 2000 Aug. 4.51300 | 10.6 | C | Nobuo Ohkura |
| 2000 Aug. 4.51486 | 10.5 | C | Nobuo Ohkura |