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MisV1223     Profile MisV1223 = MN Cam R.A. 03h57m29s.70 Decl. +54o56'17".1 (2000.0) Mag. 11.99-12.51V Type DCEP Period 8.2 Epoch 2451493.9 = GSC 3721-00495 03h57m29s.75 +54o56'17".3 Error:0.2" Mag:11.94 Ma gError:0.53 Band:1 Class:0 Plate:036F Flag:F Epoch:11 OCT 1983 = USNO-A2.0 1425.04685524 03h57m29s.746 +54o56'17".17 Mag(R):11.2 M ag(B):14.6 Digitized Sky Survey GIF image (15 x 15 arcmin) SIMBAD Query AAVSO VSX Database ASAS-3 Light Curve NSVS Light Curve (NSVS 2086288) NSVS Light Curve (NSVS 1983956) Discovery Information Seiichi Yoshida, MISAO Project; Nobuo Ohkura, Okayama, Japan; and Ken-ichi Kadota, MISAO Project, discovered a new variable star MisV1223. 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 Patrick Wils and John Greaves revealed that it is a Cepheid variable with a period of 8.2 days from the NSVS data (IBVS 5512). Based on the V-band survey from Oct. 25 to Dec. 7 in 2003, and Rc-band survey from Sept. 30 to Dec. 14 in 2004 by Nobuo Ohkura, the light curve is obtained and it was confirmed to be a Cepheid variable with a period of 8.2 days. The magnitude ranges are revealed to be 11.99-12.51 mag in V-band, and 11.20-11.80 mag in Rc-band. Toshihito Ishida commented that this star belongs to a group named bump Cepheid, a Cepheid variable with a bump in its light curve. Research and Publication New Northern Cepheids IBVS 5512 Wils, Patrick; Greaves, John Light Curve New Northern Cepheids IBVS 5512 Wils, Patrick; Greaves, John Nobuo Ohkura's survey V-band from Oct. 25 to Dec. 7 in 2003 Rc-band from Sept. 30 to Dec. 14 in 2004 Observations by MISAO Project Date Mag Filter Observer 2000 Dec. 23.53387 10.95 C Nobuo Ohkura 2000 Dec. 23.53572 10.94 C Nobuo Ohkura 2000 Dec. 23.53758 10.90 C Nobuo Ohkura 2001 Oct. 13.69779 10.94 C Nobuo Ohkura 2001 Nov. 16.63245 10.70 C Nobuo Ohkura 2001 Nov. 16.63442 10.78 C Nobuo Ohkura 2001 Nov. 16.63640 10.80 C Nobuo Ohkura 2002 Jan. 30.43356 10.75 C Nobuo Ohkura 2002 Jan. 30.43553 10.83 C Nobuo Ohkura 2002 Jan. 30.43751 10.80 C Nobuo Ohkura 2003 Sept. 26.75340 11.04 C Nobuo Ohkura 2003 Sept. 30.71981 11.37 C Nobuo Ohkura 2003 Sept. 30.72178 11.45 C Nobuo Ohkura 2003 Sept. 30.72375 11.46 C Nobuo Ohkura 2003 Oct. 25.68120 12.49 V Nobuo Ohkura 2003 Oct. 25.68317 12.46 V Nobuo Ohkura 2003 Oct. 25.68513 12.50 V Nobuo Ohkura 2003 Oct. 28.67300 12.09 V Nobuo Ohkura 2003 Oct. 28.67497 12.11 V Nobuo Ohkura 2003 Oct. 28.67692 12.13 V Nobuo Ohkura 2003 Oct. 29.67819 11.98 V Nobuo Ohkura 2003 Oct. 29.68016 11.99 V Nobuo Ohkura 2003 Oct. 29.68213 12.00 V Nobuo Ohkura 2003 Oct. 30.67317 12.00 V Nobuo Ohkura 2003 Oct. 30.67514 12.03 V Nobuo Ohkura 2003 Oct. 30.67709 12.10 V Nobuo Ohkura 2003 Nov. 4.65130 12.50 V Nobuo Ohkura 2003 Nov. 4.65326 12.52 V Nobuo Ohkura 2003 Nov. 4.65523 12.52 V Nobuo Ohkura 2003 Nov. 13.62902 12.20 V Nobuo Ohkura 2003 Nov. 13.63098 12.24 V Nobuo Ohkura 2003 Nov. 13.63295 12.18 V Nobuo Ohkura 2003 Nov. 16.61891 12.03 V Nobuo Ohkura 2003 Nov. 16.62088 12.03 V Nobuo Ohkura 2003 Nov. 16.62285 12.04 V Nobuo Ohkura 2003 Nov. 17.60647 12.20 V Nobuo Ohkura 2003 Nov. 17.60844 12.24 V Nobuo Ohkura 2003 Nov. 17.61041 12.19 V Nobuo Ohkura 2003 Nov. 23.60551 12.01 V Nobuo Ohkura 2003 Nov. 23.60749 12.04 V Nobuo Ohkura 2003 Nov. 23.60946 12.00 V Nobuo Ohkura 2003 Nov. 25.58631 12.20 V Nobuo Ohkura 2003 Nov. 25.58828 12.18 V Nobuo Ohkura 2003 Nov. 25.59024 12.19 V Nobuo Ohkura 2003 Dec. 3.57228 12.14 V Nobuo Ohkura 2003 Dec. 3.57425 12.17 V Nobuo Ohkura 2003 Dec. 3.57622 12.10 V Nobuo Ohkura 2003 Dec. 7.55633 12.42 V Nobuo Ohkura 2003 Dec. 7.55830 12.41 V Nobuo Ohkura 2003 Dec. 7.56640 12.47 V Nobuo Ohkura 2003 Dec. 7.56837 12.45 V Nobuo Ohkura 2004 Sept. 30.76944 11.20 Rc Nobuo Ohkura 2004 Oct. 16.69656 11.27 Rc Nobuo Ohkura 2004 Oct. 16.70049 11.25 Rc Nobuo Ohkura 2004 Oct. 16.70442 11.23 Rc Nobuo Ohkura 2004 Oct. 21.66579 11.76 Rc Nobuo Ohkura 2004 Oct. 21.66972 11.68 Rc Nobuo Ohkura 2004 Oct. 21.67366 11.72 Rc Nobuo Ohkura 2004 Oct. 21.67758 11.68 Rc Nobuo Ohkura 2004 Oct. 27.65516 11.65 Rc Nobuo Ohkura 2004 Oct. 27.65910 11.68 Rc Nobuo Ohkura 2004 Oct. 27.66303 11.71 Rc Nobuo Ohkura 2004 Oct. 27.66696 11.56 Rc Nobuo Ohkura 2004 Nov. 1.63927 11.33 Rc Nobuo Ohkura 2004 Nov. 1.64319 11.31 Rc Nobuo Ohkura 2004 Nov. 1.64714 11.37 Rc Nobuo Ohkura 2004 Nov. 1.65108 11.30 Rc Nobuo Ohkura 2004 Nov. 3.65080 11.60 Rc Nobuo Ohkura 2004 Nov. 3.65471 11.45 Rc Nobuo Ohkura 2004 Nov. 3.65866 11.48 Rc Nobuo Ohkura 2004 Nov. 6.62262 11.76 Rc Nobuo Ohkura 2004 Nov. 6.62655 11.69 Rc Nobuo Ohkura 2004 Nov. 6.63047 11.62 Rc Nobuo Ohkura 2004 Nov. 7.61931 11.47 Rc Nobuo Ohkura 2004 Nov. 7.62324 11.45 Rc Nobuo Ohkura 2004 Nov. 7.62718 11.48 Rc Nobuo Ohkura 2004 Nov. 9.62174 11.27 Rc Nobuo Ohkura 2004 Nov. 9.62566 11.25 Rc Nobuo Ohkura 2004 Nov. 9.62959 11.29 Rc Nobuo Ohkura 2004 Nov. 12.61597 11.56 Rc Nobuo Ohkura 2004 Nov. 12.61603 11.62 Rc Nobuo Ohkura 2004 Nov. 12.61992 11.48 Rc Nobuo Ohkura 2004 Nov. 12.61997 11.58 Rc Nobuo Ohkura 2004 Nov. 12.62385 11.56 Rc Nobuo Ohkura 2004 Nov. 12.62390 11.61 Rc Nobuo Ohkura 2004 Nov. 12.62784 11.62 Rc Nobuo Ohkura 2004 Nov. 19.59537 11.55 Rc Nobuo Ohkura 2004 Nov. 19.59931 11.45 Rc Nobuo Ohkura 2004 Nov. 19.60323 11.36 Rc Nobuo Ohkura 2004 Nov. 20.59569 11.49 Rc Nobuo Ohkura 2004 Nov. 20.59593 11.57 Rc Nobuo Ohkura 2004 Nov. 20.59963 11.55 Rc Nobuo Ohkura 2004 Nov. 20.59986 11.46 Rc Nobuo Ohkura 2004 Nov. 21.58139 11.66 Rc Nobuo Ohkura 2004 Nov. 21.58166 11.88 Rc Nobuo Ohkura 2004 Nov. 21.58532 11.62 Rc Nobuo Ohkura 2004 Nov. 21.58558 11.72 Rc Nobuo Ohkura 2004 Nov. 21.58927 11.68 Rc Nobuo Ohkura 2004 Nov. 21.58951 11.75 Rc Nobuo Ohkura 2004 Nov. 21.59345 11.80 Rc Nobuo Ohkura 2004 Nov. 22.57935 11.80 Rc Nobuo Ohkura 2004 Nov. 22.57944 11.85 Rc Nobuo Ohkura 2004 Nov. 22.58330 11.78 Rc Nobuo Ohkura 2004 Nov. 22.58337 11.90 Rc Nobuo Ohkura 2004 Nov. 22.58723 11.73 Rc Nobuo Ohkura 2004 Nov. 22.58730 11.79 Rc Nobuo Ohkura 2004 Nov. 22.59124 11.74 Rc Nobuo Ohkura 2004 Nov. 23.57242 11.48 Rc Nobuo Ohkura 2004 Nov. 23.57245 11.51 Rc Nobuo Ohkura 2004 Nov. 23.57635 11.52 Rc Nobuo Ohkura 2004 Nov. 23.57639 11.68 Rc Nobuo Ohkura 2004 Nov. 23.58030 11.55 Rc Nobuo Ohkura 2004 Nov. 23.58032 11.62 Rc Nobuo Ohkura 2004 Nov. 23.58424 11.60 Rc Nobuo Ohkura 2004 Nov. 24.58485 11.21 Rc Nobuo Ohkura 2004 Nov. 24.58505 11.24 Rc Nobuo Ohkura 2004 Nov. 24.58878 11.17 Rc Nobuo Ohkura 2004 Nov. 24.58898 11.23 Rc Nobuo Ohkura 2004 Nov. 24.59272 11.18 Rc Nobuo Ohkura 2004 Nov. 24.59292 11.30 Rc Nobuo Ohkura 2004 Nov. 24.59684 11.25 Rc Nobuo Ohkura 2004 Nov. 25.59205 11.26 Rc Nobuo Ohkura 2004 Nov. 25.59598 11.34 Rc Nobuo Ohkura 2004 Nov. 25.59615 11.31 Rc Nobuo Ohkura 2004 Nov. 25.59992 11.37 Rc Nobuo Ohkura 2004 Nov. 25.60008 11.19 Rc Nobuo Ohkura 2004 Nov. 25.60402 11.12 Rc Nobuo Ohkura 2004 Nov. 30.57082 11.75 Rc Nobuo Ohkura 2004 Nov. 30.57476 11.75 Rc Nobuo Ohkura 2004 Nov. 30.57870 11.75 Rc Nobuo Ohkura 2004 Dec. 14.53079 11.37 Rc Nobuo Ohkura 2004 Dec. 14.53473 11.38 Rc Nobuo Ohkura 2004 Dec. 14.53867 11.37 Rc Nobuo Ohkura