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MisV1239     Profile MisV1239 = V959 Cas R.A. 00h12m02s.69 Decl. +55o05'19".6 (2000.0) Mag. 11.97-12.61C Type EW Period 1.0650 Epoch 2452960.2298 = USNO-A2.0 1425.00290138 00h12m02s.668 +55o05'19".39 Mag(R):11.9 M ag(B):13.0 = GSC 3656-01495 00h12m02s.65 +55o05'19".4 Error:0.2" Mag:12.03 Ma gError:0.25 Band:1 Class:0 Plate:02RM Flag:F Epoch:11 OCT 1983 Digitized Sky Survey GIF image (15 x 15 arcmin) SIMBAD Query AAVSO VSX Database ASAS-3 Light Curve NSVS Light Curve (NSVS 1562513) Discovery Information Seiichi Yoshida, MISAO Project; Nobuo Ohkura, Okayama, Japan; and Kazuhiro Nakajima, Mie, Japan, discovered a new variable star MisV1239. 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 Kazuhiro Nakajima. Kazuhiro Nakajima revealed it is a W UMa-type eclipsing variable with unfiltered CCD variations of 11.97 mag at maximum, 12.61 mag at primary minimum, 12.47 mag at secondary minimum, and period of 1.0650 days. The identification is researched by Taichi Kato (Kyoto University), Seiichi Yoshida, and other contributors. Special Notes Kazuhiro Nakajima's observations revealed it is a W UMa-type eclipsing variable with unfiltered CCD variations of 11.97 mag at maximum, 12.61 mag at primary minimum, 12.47 mag at secondary minimum, and period of 1.0650 days (IBVS 5600). Research and Publication New W UMa-type eclipsing variable MisV1239 Nakajima, K.; Yoshida, S.; Ohkura, N. Reports on New Discoveries IBVS 5600 Nakajima, K.; Yoshida, S.; Ohkura, N. Kazuhiro Nakajima's observations Visual and CCD minima of eclipsing binaries during 2003 Variable Star Bulletin No.42 Kazuo Nagai Light Curve New W UMa-type eclipsing variable MisV1239 Nakajima, K.; Yoshida, S.; Ohkura, N. Observations by MISAO Project Date Mag Filter Observer 2000 Aug. 29.59252 11.96 C Nobuo Ohkura 2000 Aug. 29.59438 11.90 C Nobuo Ohkura 2000 Aug. 29.59623 11.88 C Nobuo Ohkura 2000 Oct. 4.57556 12.31 C Nobuo Ohkura 2000 Oct. 4.57742 12.25 C Nobuo Ohkura 2000 Oct. 4.57927 12.25 C Nobuo Ohkura 2000 Oct. 4.58113 12.28 C Nobuo Ohkura 2001 Nov. 16.48672 12.10 C Nobuo Ohkura 2001 Nov. 16.48869 12.14 C Nobuo Ohkura 2001 Nov. 16.49066 12.22 C Nobuo Ohkura 2001 Nov. 28.44660 11.95 C Nobuo Ohkura 2001 Nov. 28.44856 11.96 C Nobuo Ohkura 2001 Nov. 28.45053 12.01 C Nobuo Ohkura 2003 Sept. 13.62789 12.00 C Nobuo Ohkura 2003 Sept. 13.62987 11.98 C Nobuo Ohkura 2003 Sept. 13.63185 12.04 C Nobuo Ohkura 2003 Sept. 14.63321 12.06 C Nobuo Ohkura 2003 Sept. 14.63519 12.02 C Nobuo Ohkura 2003 Sept. 14.63716 12.03 C Nobuo Ohkura 2003 Sept. 15.60987 11.93 C Nobuo Ohkura 2003 Sept. 15.61084 11.99 C Nobuo Ohkura 2003 Sept. 15.61183 12.25 C Nobuo Ohkura 2003 Sept. 15.61281 12.14 C Nobuo Ohkura 2003 Sept. 15.61380 12.20 C Nobuo Ohkura 2003 Sept. 15.61478 12.31 C Nobuo Ohkura 2003 Sept. 16.61593 12.24 C Nobuo Ohkura 2003 Sept. 16.61791 12.21 C Nobuo Ohkura 2003 Sept. 16.61987 12.18 C Nobuo Ohkura 2003 Sept. 18.61572 12.41 C Nobuo Ohkura 2003 Sept. 18.61769 12.48 C Nobuo Ohkura 2003 Sept. 22.60230 11.79 C Nobuo Ohkura 2003 Sept. 22.60427 11.76 C Nobuo Ohkura 2003 Sept. 22.60624 11.90 C Nobuo Ohkura 2003 Sept. 27.58778 12.40 C Nobuo Ohkura 2003 Sept. 27.58975 12.39 C Nobuo Ohkura 2003 Sept. 27.59171 12.45 C Nobuo Ohkura 2003 Sept. 28.58417 12.21 C Nobuo Ohkura 2003 Sept. 28.58613 12.18 C Nobuo Ohkura 2003 Sept. 28.58810 12.21 C Nobuo Ohkura 2003 Sept. 29.56802 12.08 C Nobuo Ohkura 2003 Sept. 29.56999 11.99 C Nobuo Ohkura 2003 Sept. 29.57196 12.01 C Nobuo Ohkura 2003 Sept. 30.55903 12.00 C Nobuo Ohkura 2003 Sept. 30.56100 12.13 C Nobuo Ohkura 2003 Sept. 30.56296 11.95 C Nobuo Ohkura 2003 Oct. 25.52612 12.12 V Nobuo Ohkura 2003 Oct. 25.52809 12.13 V Nobuo Ohkura 2003 Oct. 25.53006 12.19 V Nobuo Ohkura 2003 Oct. 29.52049 12.33 V Nobuo Ohkura 2003 Oct. 29.52245 12.31 V Nobuo Ohkura 2003 Oct. 29.52442 12.42 V Nobuo Ohkura 2003 Oct. 30.51889 12.20 V Nobuo Ohkura 2003 Oct. 30.52087 12.18 V Nobuo Ohkura 2003 Oct. 30.52284 12.22 V Nobuo Ohkura 2003 Nov. 4.49529 12.62 V Nobuo Ohkura 2003 Nov. 4.49726 12.55 V Nobuo Ohkura 2003 Nov. 4.49921 12.55 V Nobuo Ohkura 2003 Nov. 7.50069 12.19 V Nobuo Ohkura 2003 Nov. 7.50267 12.18 V Nobuo Ohkura 2003 Nov. 7.50464 12.20 V Nobuo Ohkura 2003 Nov. 13.47427 12.47 V Nobuo Ohkura 2003 Nov. 13.47624 12.50 V Nobuo Ohkura 2003 Nov. 13.47821 12.53 V Nobuo Ohkura 2003 Nov. 16.46949 12.18 V Nobuo Ohkura 2003 Nov. 16.47147 12.17 V Nobuo Ohkura 2003 Nov. 16.47344 12.11 V Nobuo Ohkura 2003 Nov. 17.45130 12.18 V Nobuo Ohkura 2003 Nov. 17.45326 12.21 V Nobuo Ohkura 2003 Nov. 17.45523 12.23 V Nobuo Ohkura 2003 Nov. 21.44554 12.46 V Nobuo Ohkura 2003 Nov. 21.44751 12.40 V Nobuo Ohkura 2003 Nov. 21.44948 12.38 V Nobuo Ohkura 2003 Nov. 22.45228 12.24 V Nobuo Ohkura 2003 Nov. 22.45424 12.27 V Nobuo Ohkura 2003 Nov. 22.45620 12.34 V Nobuo Ohkura 2003 Nov. 25.44648 12.05 V Nobuo Ohkura 2003 Nov. 25.44844 12.06 V Nobuo Ohkura 2003 Nov. 25.45042 12.12 V Nobuo Ohkura 2003 Dec. 3.41661 12.17 V Nobuo Ohkura 2003 Dec. 3.41856 12.21 V Nobuo Ohkura 2003 Dec. 3.42053 12.25 V Nobuo Ohkura 2004 Oct. 16.54713 12.09 Rc Nobuo Ohkura 2004 Oct. 16.55106 12.04 Rc Nobuo Ohkura 2004 Oct. 16.55500 12.07 Rc Nobuo Ohkura 2004 Oct. 16.55894 12.17 Rc Nobuo Ohkura 2004 Oct. 21.51637 12.84 Rc Nobuo Ohkura 2004 Oct. 21.52029 12.79 Rc Nobuo Ohkura 2004 Oct. 21.52422 12.94 Rc Nobuo Ohkura 2004 Oct. 21.52816 12.86 Rc Nobuo Ohkura 2004 Oct. 27.50574 12.21 Rc Nobuo Ohkura 2004 Oct. 27.50968 12.26 Rc Nobuo Ohkura 2004 Oct. 27.51360 12.39 Rc Nobuo Ohkura 2004 Oct. 28.50249 12.36 V Nobuo Ohkura 2004 Oct. 28.50642 12.47 V Nobuo Ohkura 2004 Nov. 1.50172 12.21 Rc Nobuo Ohkura 2004 Nov. 3.50138 12.20 Rc Nobuo Ohkura 2004 Nov. 3.50531 12.17 Rc Nobuo Ohkura 2004 Nov. 3.50925 11.97 Rc Nobuo Ohkura 2004 Nov. 6.47328 12.80 Rc Nobuo Ohkura 2004 Nov. 6.47720 12.71 Rc Nobuo Ohkura 2004 Nov. 6.48113 13.01 Rc Nobuo Ohkura 2004 Nov. 7.46596 12.35 Rc Nobuo Ohkura 2004 Nov. 7.46988 12.44 Rc Nobuo Ohkura 2004 Nov. 7.47382 12.50 Rc Nobuo Ohkura 2004 Nov. 7.47775 12.31 Rc Nobuo Ohkura 2004 Nov. 9.47237 12.22 Rc Nobuo Ohkura 2004 Nov. 9.47630 12.01 Rc Nobuo Ohkura 2004 Nov. 9.48023 12.05 Rc Nobuo Ohkura 2004 Nov. 12.46240 12.34 Rc Nobuo Ohkura 2004 Nov. 12.46633 12.43 Rc Nobuo Ohkura 2004 Nov. 12.46661 12.08 Rc Nobuo Ohkura 2004 Nov. 12.47448 12.21 Rc Nobuo Ohkura 2004 Nov. 19.44603 12.14 Rc Nobuo Ohkura 2004 Nov. 19.44995 12.19 Rc Nobuo Ohkura 2004 Nov. 19.45389 12.01 Rc Nobuo Ohkura 2004 Nov. 20.43829 12.52 Rc Nobuo Ohkura 2004 Nov. 20.44222 12.42 Rc Nobuo Ohkura 2004 Nov. 20.44253 12.32 Rc Nobuo Ohkura 2004 Nov. 20.44616 12.27 Rc Nobuo Ohkura 2004 Nov. 20.44648 11.99 Rc Nobuo Ohkura 2004 Nov. 20.45042 12.33 Rc Nobuo Ohkura 2004 Nov. 21.42789 12.84 Rc Nobuo Ohkura 2004 Nov. 21.43183 12.61 Rc Nobuo Ohkura 2004 Nov. 21.43576 12.59 Rc Nobuo Ohkura 2004 Nov. 21.43970 12.54 Rc Nobuo Ohkura 2004 Nov. 22.42580 12.70 Rc Nobuo Ohkura 2004 Nov. 22.42973 12.74 Rc Nobuo Ohkura 2004 Nov. 22.43007 12.80 Rc Nobuo Ohkura 2004 Nov. 22.43367 12.48 Rc Nobuo Ohkura 2004 Nov. 22.43400 12.88 Rc Nobuo Ohkura 2004 Nov. 22.43793 12.59 Rc Nobuo Ohkura 2004 Nov. 23.42280 12.40 Rc Nobuo Ohkura 2004 Nov. 23.42311 12.46 Rc Nobuo Ohkura 2004 Nov. 23.42674 12.32 Rc Nobuo Ohkura 2004 Nov. 23.42705 12.32 Rc Nobuo Ohkura 2004 Nov. 23.43067 12.25 Rc Nobuo Ohkura 2004 Nov. 23.43096 12.41 Rc Nobuo Ohkura 2004 Nov. 23.43491 12.54 Rc Nobuo Ohkura 2004 Nov. 24.43529 12.33 Rc Nobuo Ohkura 2004 Nov. 24.43561 12.18 Rc Nobuo Ohkura 2004 Nov. 24.43922 12.19 Rc Nobuo Ohkura 2004 Nov. 24.43954 12.04 Rc Nobuo Ohkura 2004 Nov. 24.44316 12.19 Rc Nobuo Ohkura 2004 Nov. 24.44347 12.35 Rc Nobuo Ohkura 2004 Nov. 24.44741 12.18 Rc Nobuo Ohkura 2004 Nov. 25.44247 12.26 Rc Nobuo Ohkura 2004 Nov. 25.45035 12.24 Rc Nobuo Ohkura 2004 Nov. 25.45065 12.24 Rc Nobuo Ohkura 2004 Nov. 25.45458 12.14 Rc Nobuo Ohkura 2004 Nov. 29.37903 12.65 Rc Nobuo Ohkura 2004 Nov. 29.38294 12.39 Rc Nobuo Ohkura 2004 Nov. 29.38686 12.44 Rc Nobuo Ohkura 2004 Nov. 30.42140 12.92 Rc Nobuo Ohkura 2004 Nov. 30.42531 12.52 Rc Nobuo Ohkura 2004 Nov. 30.42924 12.53 Rc Nobuo Ohkura 2004 Dec. 14.38921 12.42 Rc Nobuo Ohkura