[vsnet-ecl 10200] DK CVn observations by H.Itoh (5/Jul/2024)

object YYMMDD(UT) mag code CVNDK 20240705.47043 14.584B Ioh.VSOLJ CVNDK 20240705.47185 14.544B Ioh.VSOLJ CVNDK 20240705.47331 14.583B Ioh.VSOLJ CVNDK 20240705.47475 14.544B Ioh.VSOLJ CVNDK 20240705.47618 14.603B Ioh.VSOLJ CVNDK 20240705.47764 14.557B Ioh.VSOLJ CVNDK 20240705.47907 14.575B Ioh.VSOLJ CVNDK 20240705.48051 14.563B Ioh.VSOLJ CVNDK 20240705.48194 14.582B Ioh.VSOLJ CVNDK 20240705.48340 14.566B Ioh.VSOLJ CVNDK 20240705.48485 14.569B Ioh.VSOLJ CVNDK 20240705.48627 14.632B Ioh.VSOLJ CVNDK 20240705.48773 14.572B Ioh.VSOLJ CVNDK 20240705.48917 14.629B Ioh.VSOLJ CVNDK 20240705.49060 14.637B Ioh.VSOLJ CVNDK 20240705.49206 14.643B Ioh.VSOLJ CVNDK 20240705.49493 14.679B Ioh.VSOLJ CVNDK 20240705.49782 14.778B Ioh.VSOLJ CVNDK 20240705.49926 14.708B Ioh.VSOLJ CVNDK 20240705.50069 14.776B Ioh.VSOLJ CVNDK 20240705.50215 14.734B Ioh.VSOLJ CVNDK 20240705.50359 14.729B Ioh.VSOLJ CVNDK 20240705.50502 14.709B Ioh.VSOLJ CVNDK 20240705.50648 14.814B Ioh.VSOLJ CVNDK 20240705.51512 14.751B Ioh.VSOLJ CVNDK 20240705.51657 14.671B Ioh.VSOLJ CVNDK 20240705.52088 14.757B Ioh.VSOLJ CVNDK 20240705.52377 14.719B Ioh.VSOLJ CVNDK 20240705.52521 14.706B Ioh.VSOLJ CVNDK 20240705.52667 14.655B Ioh.VSOLJ CVNDK 20240705.52954 14.605B Ioh.VSOLJ CVNDK 20240705.53530 14.590B Ioh.VSOLJ CVNDK 20240705.53676 14.572B Ioh.VSOLJ CVNDK 20240705.53963 14.465B Ioh.VSOLJ CVNDK 20240705.54252 14.533B Ioh.VSOLJ CVNDK 20240705.54395 14.498B Ioh.VSOLJ CVNDK 20240705.55117 14.451B Ioh.VSOLJ CVNDK 20240705.55260 14.535B Ioh.VSOLJ CVNDK 20240705.55404 14.543B Ioh.VSOLJ CVNDK 20240705.55693 14.509B Ioh.VSOLJ CVNDK 20240705.55837 14.461B Ioh.VSOLJ CVNDK 20240705.55980 14.543B Ioh.VSOLJ CVNDK 20240705.56270 14.356B Ioh.VSOLJ CVNDK 20240705.56845 14.481B Ioh.VSOLJ CVNDK 20240705.56988 14.452B Ioh.VSOLJ CVNDK 20240705.57132 14.561B Ioh.VSOLJ CVNDK 20240705.57275 14.464B Ioh.VSOLJ CVNDK 20240705.57420 14.409B Ioh.VSOLJ CVNDK 20240705.57707 14.490B Ioh.VSOLJ CVNDK 20240705.58285 14.377B Ioh.VSOLJ CVNDK 20240705.46970 13.312V Ioh.VSOLJ CVNDK 20240705.47115 13.335V Ioh.VSOLJ CVNDK 20240705.47258 13.345V Ioh.VSOLJ CVNDK 20240705.47402 13.346V Ioh.VSOLJ CVNDK 20240705.47546 13.321V Ioh.VSOLJ CVNDK 20240705.47691 13.358V Ioh.VSOLJ CVNDK 20240705.47836 13.345V Ioh.VSOLJ CVNDK 20240705.47979 13.316V Ioh.VSOLJ CVNDK 20240705.48124 13.325V Ioh.VSOLJ CVNDK 20240705.48267 13.301V Ioh.VSOLJ CVNDK 20240705.48412 13.314V Ioh.VSOLJ CVNDK 20240705.48556 13.329V Ioh.VSOLJ CVNDK 20240705.48700 13.326V Ioh.VSOLJ CVNDK 20240705.48844 13.353V Ioh.VSOLJ CVNDK 20240705.48988 13.348V Ioh.VSOLJ CVNDK 20240705.49133 13.372V Ioh.VSOLJ CVNDK 20240705.49421 13.416V Ioh.VSOLJ CVNDK 20240705.49709 13.433V Ioh.VSOLJ CVNDK 20240705.49854 13.456V Ioh.VSOLJ CVNDK 20240705.49998 13.500V Ioh.VSOLJ CVNDK 20240705.50142 13.500V Ioh.VSOLJ CVNDK 20240705.50287 13.501V Ioh.VSOLJ CVNDK 20240705.50431 13.480V Ioh.VSOLJ CVNDK 20240705.50575 13.499V Ioh.VSOLJ CVNDK 20240705.51440 13.516V Ioh.VSOLJ CVNDK 20240705.51583 13.497V Ioh.VSOLJ CVNDK 20240705.52016 13.474V Ioh.VSOLJ CVNDK 20240705.52306 13.508V Ioh.VSOLJ CVNDK 20240705.52450 13.457V Ioh.VSOLJ CVNDK 20240705.52594 13.400V Ioh.VSOLJ CVNDK 20240705.52882 13.388V Ioh.VSOLJ CVNDK 20240705.53459 13.306V Ioh.VSOLJ CVNDK 20240705.53603 13.298V Ioh.VSOLJ CVNDK 20240705.53891 13.304V Ioh.VSOLJ CVNDK 20240705.54179 13.330V Ioh.VSOLJ CVNDK 20240705.54324 13.311V Ioh.VSOLJ CVNDK 20240705.55044 13.276V Ioh.VSOLJ CVNDK 20240705.55187 13.275V Ioh.VSOLJ CVNDK 20240705.55332 13.229V Ioh.VSOLJ CVNDK 20240705.55620 13.242V Ioh.VSOLJ CVNDK 20240705.55764 13.265V Ioh.VSOLJ CVNDK 20240705.55909 13.285V Ioh.VSOLJ CVNDK 20240705.56197 13.218V Ioh.VSOLJ CVNDK 20240705.56772 13.257V Ioh.VSOLJ CVNDK 20240705.56917 13.229V Ioh.VSOLJ CVNDK 20240705.57060 13.243V Ioh.VSOLJ CVNDK 20240705.57205 13.232V Ioh.VSOLJ CVNDK 20240705.57348 13.216V Ioh.VSOLJ CVNDK 20240705.57637 13.205V Ioh.VSOLJ CVNDK 20240705.58214 13.172V Ioh.VSOLJ

Comparison: APASS 188.243736 37.905448 V=12.861 B=13.856 (B-V=0.995) Check: APASS 188.333553 37.933153 V=13.138 (B-V=0.67) Observer: H. Itoh (Tokyo, Japan) Instruments:30SC+ASI294MMpro (B,V filter) Temp -8 degree Celsius Gain120 Exposure B:65sec, V:50sec Imaging: MaxIm DL Ver.5 binning4*4 Photometry: Muniwin Ver.2.1.36 Standard system VBA Aperture radius B:7.1pixel, V:7.1pixel

minI CVNDK 2460497.008 0.001 Hel Ioh.VSOLJ n=50 B (calculated by Nagai) minI CVNDK 2460497.009 0.000 Hel Ioh.VSOLJ n=50 V (calculated by Nagai)

DK CVn JD(hel)=2460497.008 C=2460496.997 E=14955 O-C=+0.011 B DK CVn JD(hel)=2460497.009 C=2460496.997 E=14955 O-C=+0.012 V

min=2453094.8234+0.4949631xE (GCVS5.1 19-Oct-2022)

- 05/Jul/2024 DK CVn (By H.Itoh) - 13 + | ** * **** * | *********** ** * *** * * * + ***** ** *** | | 14 + | | * * * + ****** * **** ***** *** * | * * *** ** ** * ** * * | ** * * * 15 + +-----------------+-----------------+-----------------+-- 11 12 13 14 (UT)