V 406 Cam (GSC 4098:1572) er snertitvístirni í Gíraffanum sem var fyrst skráð árið 2006. Birta hennar sveiflast milli birtustigs (bst.) 12,65 og 13,00 eða um 0,35 bst. Millimyrki er örlítið grynnri og af bst. 12,9. Birtulotan er 0,29048 d (6t58m17s). B.R.N.O. gagnagrunnurinn mat vægi 10/10 þegar mælingar fóru fram, veturinn 2017-18.
V 406 Cam (GSC 4098:1572), a contact binary located in the Camelopardalis, was first recorded in 2006. Its magnitude ranges from 12.65 to 13.00 or mag. 0.35. The secondary is slightly shallower or of magnitude 12.9. The period is 0.29048 d (6h58m17s). The B.R.N.O. database rated the need for observations of this star as 10/10 at the time of measurements, in the winter of 2017-18.
Staðsetningarkort fyrir V 406 Cam (Stellarium) – Location map of V 406 Cam (Stellarium).
Höfundur vefsvæðisins ljósmældi V 406 Cam dagana 28. desember 2017, 5. og 17. janúar og 3. febrúar 2018 . Niðurstöðurnar voru notaðar til þess til að meta viðmiðstíma og birtulotu myrkvastjörnunnar og draga upp birtustöðukort af umferðartíma hennar (mynd 2).
Ýtarlegri greinargerð um mælingarnar er að finna í samantekt umstjörnuathuganir frá Hornafirði árin 2018-2019.
A number of observations (obtained on December 20, 25, 28, 29, 2017, January 1, 5, 17, and February 3, 2018) of the neglected EW type binary V 406 Cam in B and V bandpass, were used to estimate timings and establish a phase diagram (Fig. 2). Photometrical data from January 17, 2018, is unusual; the timings of eclipses coincide, but the curve is oddly shaped. The total results nevertheless indicated the different depths of the primary and secondary eclipses.
More details of this observation are issued in a report of the author’s observations in 2018-2019. It is mainly written in Icelandic, with highlights in English.
Mynd/Fig. 2. Birtustöðurit V 406 Cam. Birtustaða (phase) á þverás og birtustig á lóðás. – A phase diagram of V 406 Cam. Phase on x-axis and flux on y-axis.