[vsnet-ecl 10666] V638 And observations by H.Itoh (1/Jan/2025)

object YYMMDD(UT) mag code ANDV638 20250101.37010 12.215B Ioh.VSOLJ ANDV638 20250101.37163 12.209B Ioh.VSOLJ ANDV638 20250101.37315 12.214B Ioh.VSOLJ ANDV638 20250101.37468 12.197B Ioh.VSOLJ ANDV638 20250101.37774 12.204B Ioh.VSOLJ ANDV638 20250101.37926 12.177B Ioh.VSOLJ ANDV638 20250101.38079 12.198B Ioh.VSOLJ ANDV638 20250101.38233 12.198B Ioh.VSOLJ ANDV638 20250101.38387 12.192B Ioh.VSOLJ ANDV638 20250101.38538 12.163B Ioh.VSOLJ ANDV638 20250101.38691 12.188B Ioh.VSOLJ ANDV638 20250101.38845 12.176B Ioh.VSOLJ ANDV638 20250101.39302 12.144B Ioh.VSOLJ ANDV638 20250101.39456 12.157B Ioh.VSOLJ ANDV638 20250101.39609 12.159B Ioh.VSOLJ ANDV638 20250101.39762 12.144B Ioh.VSOLJ ANDV638 20250101.39913 12.147B Ioh.VSOLJ ANDV638 20250101.40066 12.171B Ioh.VSOLJ ANDV638 20250101.40221 12.188B Ioh.VSOLJ ANDV638 20250101.40373 12.168B Ioh.VSOLJ ANDV638 20250101.40525 12.162B Ioh.VSOLJ ANDV638 20250101.40679 12.165B Ioh.VSOLJ ANDV638 20250101.40832 12.172B Ioh.VSOLJ ANDV638 20250101.40984 12.188B Ioh.VSOLJ ANDV638 20250101.41137 12.174B Ioh.VSOLJ ANDV638 20250101.41292 12.182B Ioh.VSOLJ ANDV638 20250101.41444 12.182B Ioh.VSOLJ ANDV638 20250101.41749 12.165B Ioh.VSOLJ ANDV638 20250101.41903 12.190B Ioh.VSOLJ ANDV638 20250101.42207 12.201B Ioh.VSOLJ ANDV638 20250101.42362 12.184B Ioh.VSOLJ ANDV638 20250101.42515 12.202B Ioh.VSOLJ ANDV638 20250101.42668 12.201B Ioh.VSOLJ ANDV638 20250101.42972 12.202B Ioh.VSOLJ ANDV638 20250101.43126 12.218B Ioh.VSOLJ ANDV638 20250101.43279 12.237B Ioh.VSOLJ ANDV638 20250101.43431 12.243B Ioh.VSOLJ ANDV638 20250101.43583 12.241B Ioh.VSOLJ ANDV638 20250101.43737 12.236B Ioh.VSOLJ ANDV638 20250101.43890 12.259B Ioh.VSOLJ ANDV638 20250101.44043 12.269B Ioh.VSOLJ ANDV638 20250101.44194 12.258B Ioh.VSOLJ ANDV638 20250101.44347 12.289B Ioh.VSOLJ ANDV638 20250101.44501 12.306B Ioh.VSOLJ ANDV638 20250101.44654 12.319B Ioh.VSOLJ ANDV638 20250101.44807 12.324B Ioh.VSOLJ ANDV638 20250101.45266 12.342B Ioh.VSOLJ ANDV638 20250101.45418 12.365B Ioh.VSOLJ ANDV638 20250101.45859 12.388B Ioh.VSOLJ ANDV638 20250101.46012 12.430B Ioh.VSOLJ ANDV638 20250101.46163 12.448B Ioh.VSOLJ ANDV638 20250101.46316 12.438B Ioh.VSOLJ ANDV638 20250101.46470 12.443B Ioh.VSOLJ ANDV638 20250101.46623 12.457B Ioh.VSOLJ ANDV638 20250101.46774 12.451B Ioh.VSOLJ ANDV638 20250101.46927 12.489B Ioh.VSOLJ ANDV638 20250101.47082 12.477B Ioh.VSOLJ ANDV638 20250101.47235 12.486B Ioh.VSOLJ ANDV638 20250101.47387 12.484B Ioh.VSOLJ ANDV638 20250101.47539 12.485B Ioh.VSOLJ ANDV638 20250101.47693 12.526B Ioh.VSOLJ ANDV638 20250101.47846 12.505B Ioh.VSOLJ ANDV638 20250101.47998 12.505B Ioh.VSOLJ ANDV638 20250101.48150 12.503B Ioh.VSOLJ ANDV638 20250101.48457 12.501B Ioh.VSOLJ ANDV638 20250101.48610 12.503B Ioh.VSOLJ ANDV638 20250101.48764 12.504B Ioh.VSOLJ ANDV638 20250101.48917 12.514B Ioh.VSOLJ ANDV638 20250101.49222 12.467B Ioh.VSOLJ ANDV638 20250101.49376 12.466B Ioh.VSOLJ ANDV638 20250101.49529 12.455B Ioh.VSOLJ ANDV638 20250101.49681 12.446B Ioh.VSOLJ ANDV638 20250101.49833 12.441B Ioh.VSOLJ ANDV638 20250101.49987 12.422B Ioh.VSOLJ ANDV638 20250101.50140 12.404B Ioh.VSOLJ ANDV638 20250101.50293 12.397B Ioh.VSOLJ ANDV638 20250101.50444 12.387B Ioh.VSOLJ ANDV638 20250101.50597 12.408B Ioh.VSOLJ ANDV638 20250101.50752 12.369B Ioh.VSOLJ ANDV638 20250101.50904 12.321B Ioh.VSOLJ ANDV638 20250101.51057 12.329B Ioh.VSOLJ ANDV638 20250101.51211 12.305B Ioh.VSOLJ ANDV638 20250101.51363 12.310B Ioh.VSOLJ ANDV638 20250101.36935 11.526V Ioh.VSOLJ ANDV638 20250101.37087 11.502V Ioh.VSOLJ ANDV638 20250101.37240 11.503V Ioh.VSOLJ ANDV638 20250101.37547 11.481V Ioh.VSOLJ ANDV638 20250101.37699 11.482V Ioh.VSOLJ ANDV638 20250101.37852 11.487V Ioh.VSOLJ ANDV638 20250101.38159 11.479V Ioh.VSOLJ ANDV638 20250101.38310 11.462V Ioh.VSOLJ ANDV638 20250101.38463 11.454V Ioh.VSOLJ ANDV638 20250101.38617 11.450V Ioh.VSOLJ ANDV638 20250101.38770 11.463V Ioh.VSOLJ ANDV638 20250101.38922 11.450V Ioh.VSOLJ ANDV638 20250101.39229 11.453V Ioh.VSOLJ ANDV638 20250101.39382 11.459V Ioh.VSOLJ ANDV638 20250101.39534 11.460V Ioh.VSOLJ ANDV638 20250101.39686 11.439V Ioh.VSOLJ ANDV638 20250101.39840 11.440V Ioh.VSOLJ ANDV638 20250101.39993 11.446V Ioh.VSOLJ ANDV638 20250101.40145 11.439V Ioh.VSOLJ ANDV638 20250101.40297 11.449V Ioh.VSOLJ ANDV638 20250101.40451 11.447V Ioh.VSOLJ ANDV638 20250101.40605 11.445V Ioh.VSOLJ ANDV638 20250101.40757 11.455V Ioh.VSOLJ ANDV638 20250101.40910 11.449V Ioh.VSOLJ ANDV638 20250101.41064 11.471V Ioh.VSOLJ ANDV638 20250101.41216 11.470V Ioh.VSOLJ ANDV638 20250101.41369 11.471V Ioh.VSOLJ ANDV638 20250101.41676 11.461V Ioh.VSOLJ ANDV638 20250101.41829 11.463V Ioh.VSOLJ ANDV638 20250101.42133 11.483V Ioh.VSOLJ ANDV638 20250101.42287 11.491V Ioh.VSOLJ ANDV638 20250101.42440 11.504V Ioh.VSOLJ ANDV638 20250101.42591 11.506V Ioh.VSOLJ ANDV638 20250101.42899 11.505V Ioh.VSOLJ ANDV638 20250101.43204 11.513V Ioh.VSOLJ ANDV638 20250101.43358 11.528V Ioh.VSOLJ ANDV638 20250101.43510 11.538V Ioh.VSOLJ ANDV638 20250101.43663 11.551V Ioh.VSOLJ ANDV638 20250101.43815 11.556V Ioh.VSOLJ ANDV638 20250101.43968 11.556V Ioh.VSOLJ ANDV638 20250101.44122 11.573V Ioh.VSOLJ ANDV638 20250101.44274 11.567V Ioh.VSOLJ ANDV638 20250101.44426 11.582V Ioh.VSOLJ ANDV638 20250101.44579 11.593V Ioh.VSOLJ ANDV638 20250101.44734 11.607V Ioh.VSOLJ ANDV638 20250101.44887 11.622V Ioh.VSOLJ ANDV638 20250101.45191 11.643V Ioh.VSOLJ ANDV638 20250101.45345 11.656V Ioh.VSOLJ ANDV638 20250101.45936 11.687V Ioh.VSOLJ ANDV638 20250101.46090 11.709V Ioh.VSOLJ ANDV638 20250101.46243 11.715V Ioh.VSOLJ ANDV638 20250101.46395 11.747V Ioh.VSOLJ ANDV638 20250101.46547 11.752V Ioh.VSOLJ ANDV638 20250101.46701 11.769V Ioh.VSOLJ ANDV638 20250101.46854 11.772V Ioh.VSOLJ ANDV638 20250101.47007 11.781V Ioh.VSOLJ ANDV638 20250101.47159 11.783V Ioh.VSOLJ ANDV638 20250101.47311 11.785V Ioh.VSOLJ ANDV638 20250101.47466 11.797V Ioh.VSOLJ ANDV638 20250101.47618 11.809V Ioh.VSOLJ ANDV638 20250101.47771 11.806V Ioh.VSOLJ ANDV638 20250101.47925 11.818V Ioh.VSOLJ ANDV638 20250101.48078 11.820V Ioh.VSOLJ ANDV638 20250101.48230 11.813V Ioh.VSOLJ ANDV638 20250101.48383 11.810V Ioh.VSOLJ ANDV638 20250101.48537 11.808V Ioh.VSOLJ ANDV638 20250101.48690 11.795V Ioh.VSOLJ ANDV638 20250101.48841 11.798V Ioh.VSOLJ ANDV638 20250101.49148 11.784V Ioh.VSOLJ ANDV638 20250101.49301 11.788V Ioh.VSOLJ ANDV638 20250101.49454 11.758V Ioh.VSOLJ ANDV638 20250101.49608 11.743V Ioh.VSOLJ ANDV638 20250101.49760 11.726V Ioh.VSOLJ ANDV638 20250101.49913 11.725V Ioh.VSOLJ ANDV638 20250101.50065 11.719V Ioh.VSOLJ ANDV638 20250101.50218 11.694V Ioh.VSOLJ ANDV638 20250101.50372 11.688V Ioh.VSOLJ ANDV638 20250101.50524 11.680V Ioh.VSOLJ ANDV638 20250101.50676 11.674V Ioh.VSOLJ ANDV638 20250101.50831 11.660V Ioh.VSOLJ ANDV638 20250101.50984 11.636V Ioh.VSOLJ ANDV638 20250101.51137 11.629V Ioh.VSOLJ ANDV638 20250101.51288 11.633V Ioh.VSOLJ

Comparison: APASS 350.017706 43.988995 V=10.201 B=10.799 (B-V=0.598) Check: APASS 350.08113 44.090777 V=12.408 (B-V=0.537) Observer: H. Itoh (Tokyo, Japan) Instruments:20SC+ATIK383L+ (B,V filter) Temp -12 degree Celsius Exposure: B:75sec,V:45sec Imaging: MaxIm DL Ver.5 binning3*3 Photometry: Muniwin Ver.2.1.36, Standard system VBA Aperture radius B:5.3pixel, V:5.3pixel

minII ANDV638 2460676.9808 0.0006 Hel Ioh.VSOLJ n=83 B (calculated by Nagai) minII ANDV638 2460676.9810 0.0002 Hel Ioh.VSOLJ n=83 V (calculated by Nagai)

V638 And JD(hel)=2460676.9808 C=2460676.9344 E=27955.5 O-C=+0.0464 B V638 And JD(hel)=2460676.9810 C=2460676.9344 E=27955.5 O-C=+0.0466 V

min=2451375.86+0.33271xE (GCVS5.1 24-Nov-2024)

- 01/Jan/2025 V638 And (By H.Itoh) - 11 + | | + ********************* | ***** ***** | ********* 12 + | ***** ************ | ****** **** + ************ | | 13 + +----------+----------+----------+----------+----------+- 08 09 10 11 12 13 (UT)