[vsnet-ecl 7413] V2612 Oph observations by K.Nagai (8/Apr/2020)

[K.Nagai]

object           YYMMDD(UT)        mag    code
OPHV2612        20200408.70567    9.948B  Nga.VSOLJ
OPHV2612        20200408.71203   10.011B  Nga.VSOLJ
OPHV2612        20200408.71837   10.044B  Nga.VSOLJ
OPHV2612        20200408.72155   10.064B  Nga.VSOLJ
OPHV2612        20200408.72472   10.089B  Nga.VSOLJ
OPHV2612        20200408.72791   10.124B  Nga.VSOLJ
OPHV2612        20200408.73108   10.151B  Nga.VSOLJ
OPHV2612        20200408.73426   10.164B  Nga.VSOLJ
OPHV2612        20200408.74060   10.164B  Nga.VSOLJ
OPHV2612        20200408.74696   10.137B  Nga.VSOLJ
OPHV2612        20200408.75331   10.118B  Nga.VSOLJ
OPHV2612        20200408.75649   10.106B  Nga.VSOLJ
OPHV2612        20200408.75966   10.073B  Nga.VSOLJ
OPHV2612        20200408.76602   10.013B  Nga.VSOLJ
OPHV2612        20200408.76919   10.000B  Nga.VSOLJ
OPHV2612        20200408.77237    9.967B  Nga.VSOLJ
OPHV2612        20200408.77554    9.956B  Nga.VSOLJ
OPHV2612        20200408.77873    9.922B  Nga.VSOLJ
OPHV2612        20200408.78190    9.904B  Nga.VSOLJ
OPHV2612        20200408.78825    9.867B  Nga.VSOLJ
OPHV2612        20200408.79778    9.822B  Nga.VSOLJ
OPHV2612        20200408.80413    9.779B  Nga.VSOLJ
OPHV2612        20200408.80730    9.774B  Nga.VSOLJ
OPHV2612        20200408.81049    9.749B  Nga.VSOLJ
OPHV2612        20200408.81366    9.724B  Nga.VSOLJ
OPHV2612        20200408.75208    9.384V  Nga.VSOLJ
OPHV2612        20200408.75525    9.340V  Nga.VSOLJ
OPHV2612        20200408.75843    9.354V  Nga.VSOLJ
OPHV2612        20200408.76161    9.304V  Nga.VSOLJ
OPHV2612        20200408.76478    9.316V  Nga.VSOLJ
OPHV2612        20200408.76796    9.279V  Nga.VSOLJ
OPHV2612        20200408.77113    9.307V  Nga.VSOLJ
OPHV2612        20200408.77432    9.266V  Nga.VSOLJ
OPHV2612        20200408.77749    9.271V  Nga.VSOLJ
OPHV2612        20200408.78066    9.252V  Nga.VSOLJ
OPHV2612        20200408.78384    9.219V  Nga.VSOLJ
OPHV2612        20200408.78701    9.242V  Nga.VSOLJ
OPHV2612        20200408.79020    9.212V  Nga.VSOLJ
OPHV2612        20200408.79337    9.202V  Nga.VSOLJ
OPHV2612        20200408.79654    9.195V  Nga.VSOLJ
OPHV2612        20200408.79972    9.178V  Nga.VSOLJ
OPHV2612        20200408.80289    9.177V  Nga.VSOLJ
OPHV2612        20200408.68767    8.787Ic  Nga.VSOLJ
OPHV2612        20200408.69084    8.797Ic  Nga.VSOLJ
OPHV2612        20200408.69403    8.822Ic  Nga.VSOLJ
OPHV2612        20200408.69720    8.833Ic  Nga.VSOLJ
OPHV2612        20200408.70037    8.857Ic  Nga.VSOLJ
OPHV2612        20200408.70355    8.864Ic  Nga.VSOLJ
OPHV2612        20200408.70672    8.876Ic  Nga.VSOLJ
OPHV2612        20200408.70991    8.890Ic  Nga.VSOLJ
OPHV2612        20200408.71308    8.921Ic  Nga.VSOLJ
OPHV2612        20200408.71626    8.955Ic  Nga.VSOLJ
OPHV2612        20200408.71943    8.957Ic  Nga.VSOLJ
OPHV2612        20200408.72579    8.980Ic  Nga.VSOLJ
OPHV2612        20200408.72896    9.016Ic  Nga.VSOLJ
OPHV2612        20200408.73214    9.004Ic  Nga.VSOLJ
OPHV2612        20200408.73531    9.015Ic  Nga.VSOLJ
OPHV2612        20200408.73850    9.030Ic  Nga.VSOLJ
OPHV2612        20200408.74484    9.030Ic  Nga.VSOLJ
OPHV2612        20200408.74802    9.003Ic  Nga.VSOLJ
OPHV2612        20200408.75119    8.996Ic  Nga.VSOLJ
OPHV2612        20200408.75437    8.991Ic  Nga.VSOLJ
OPHV2612        20200408.75755    8.976Ic  Nga.VSOLJ
OPHV2612        20200408.76073    8.946Ic  Nga.VSOLJ
OPHV2612        20200408.76390    8.938Ic  Nga.VSOLJ
OPHV2612        20200408.76707    8.917Ic  Nga.VSOLJ
OPHV2612        20200408.77343    8.889Ic  Nga.VSOLJ
OPHV2612        20200408.77661    8.872Ic  Nga.VSOLJ
OPHV2612        20200408.77978    8.854Ic  Nga.VSOLJ
OPHV2612        20200408.78296    8.829Ic  Nga.VSOLJ
OPHV2612        20200408.78613    8.820Ic  Nga.VSOLJ
OPHV2612        20200408.78931    8.810Ic  Nga.VSOLJ
OPHV2612        20200408.79566    8.754Ic  Nga.VSOLJ
OPHV2612        20200408.79884    8.718Ic  Nga.VSOLJ
OPHV2612        20200408.80201    8.716Ic  Nga.VSOLJ
OPHV2612        20200408.80520    8.693Ic  Nga.VSOLJ
OPHV2612        20200408.80837    8.679Ic  Nga.VSOLJ
OPHV2612        20200408.81154    8.658Ic  Nga.VSOLJ
OPHV2612        20200408.81472    8.635Ic  Nga.VSOLJ
---------------------------------------------------------------------
observer: K.Nagai (Kanagawa,Japan)
Instruments: 15L(F2) ST-402(KAF-402ME) , -5deg 2x2bin , B 120sec V 90sec I 60sec
comp. star TYC2-445.833.1 8.09B 7.64V 7.19I
check star TYC2-445.1293.1
AIP4Win v.2.4.0, Aperture 5radius
error 0.014(B) 0.014(V) 0.015(I)
------------------------------------------------------------

This is the primary minimum of an EW-type eclipsing binary.

minI OPHV2612 2458948.2412 0.0006 Hel Nga.VSOLJ n=25 B
minI OPHV2612 2458948.2411 0.0003 Hel Nga.VSOLJ n=37 Ic

V2612 Oph JD(hel)=2458948.2412 C=2458948.0821 E=17302 O-C=+0.1591 B
V2612 Oph JD(hel)=2458948.2411 C=2458948.0821 E=17302 O-C=+0.1590 Ic

min=2452454.7107+0.375296xE (GCVS5 08/Jul/2019)


              - 08/Apr/2020 V2612 Oph (By K.Nagai) -
08 +                                                         
   |                                                         
   +                                                         
   |       ******                        ***** **** ***      
09 +             *** ** ***** ***** *** *                    
   |                              ************* ***          
   +                             *                           
   |                                         *  * ****       
10 +             * * *** *       *** **** **                 
   |                     * * * *                             
   +                                                         
   |                                                         
11 +                                                         
    +-------------+-------------+-------------+-------------+
   16            17            18            19            20 (UT)

Kazuo Nagai / PXS10547 at nifty.ne.jp ( http://eclipsingbinary.web.fc2.com/ )