V716 Centaurus (HD124195)
Aim of the campaign
V716 Centaurus is an early-type semidetached binary system which has been very poorly observed. The initial aim is to determine accurate Time of Minimum for several primary and secondary eclipses. We will repeat TOM measurements each season in order to accurately determine the period.
{tab Data}
STAR | Max V Mag | RA 2000 | BRNO epoch (HJD) | BRNO period | Primary / secondary |
V716 Cen | 5.96 | 14h13m39.8s | 2438524.4069 | 1.490096 | p |
Min V Mag | DEC 2000 | Krakow epoch (HJD) | Krakow period | ||
6.52 | -54°37′ 32″ | 2452501.4920 | 1.4900943 | ||
Recent data: 2455746.91026 (0.00012) TOM for primary eclipse (M. Blackford)
{tab Light Curve}
From Bakis, H., Bakis, V., Demerican, O. And Eker, Z., Mon. Not. R. Astron. Soc. 385, 381-390 (2008).
{tab Observing}
No bright field stars close enough to interfere with measurements.
{tab Finder Chart}
The field of V716 Cen is shown in the plot below.
{tab Comparison Star Data}
Please use the four comparison stars labled on the chart and catalogue values listed below.
Comp Star | Name | RA J2000) | DEC (J2000) | V | B-V | V-Rc |
1 | HD121336 | 13 56 19.95 | -54 07 56.7 | 6.150 | 0.060 | -0.073 |
2 | HD124812 | 14 17 25.52 | -55 45 54.5 | 6.625 | 0.188 | 0.144 |
3 | HD125287 | 14 20 14.23 | -55 47 29.0 | 7.086 | 0.938 | 0.452 |
4 | HD125669 | 14 22 43.21 | -55 25 52.1 | 7.216 | 0.070 | -0.050 |
{tab Preliminary Results}
The plot below shows a primary minimum observed by Mark Blackford at HJD 2455746.91026 (0.00012) as determined using PERANSO which is roughly 38 minutes earlier than the BRNO prediction and 10 minutes earlier than the Krakow prediction.
{/tabs}