We report a photometric observation of a XO-2b exoplanet transit in constellation Lynx. The data was collected by using the automated 25-cm f/4.2 Schmidt-Cassegrain with a CCD camera cooled to -22 °C and single Johnson V band filter. Exposure time was 80 seconds. All images were bias, dark and flat subtracted. Calculated transit starts on 24. Jan. at 20 h 47 min UT (HJD 2454490.37) and ends at 23 h 33 min UT (HJD 2454490.48 2008). Predicted central transit was at 22 h 10 min UT (HJD 2454490.42).

The XO-2b (GSC 03413-00005) exoplanet is located at R.A. = 07h 48m 06.468s, Decl. = +50° 13' 32.96" (equinox 2000.0).

XO-2b Exoplanet Transit Light Curve
214 photometric observations were collected on night of 2008 Jan. 24-25 (start time JD 2454490.2978, end time JD 2454490.5634). Magnitude depth is 0.0164 mag. Comparison star (C) was GSC-3413-0210 (V 11.02 mag) and check star (C1) was GSC-3413-0050 (V 12.38 mag). Copyright © 2008 by T. Fabjan and M. Mihelčič, Kobdilj Observatory.

Delta-Scuti type variable VSX J074805.5+501556 (GSC 03413-00339) Light Curve
233 photometric observations were collected on night of 2008 Jan. 24-25 (start time JD 2454490.2875, end time JD 2454490.5634). Comparison star (C) was GSC-3413-01870 (V 11.57 mag) and check star (C1) was GSC-3413-0050 (V 12.38 mag). Data analysis
give the period of P = 0.039863 d (+/- 0.000725). Copyright © 2008 by T. Fabjan and M. Mihelčič, Kobdilj Observatory.

Photometric Detection of a XO-2b Exoplanet Transit at Kobdilj Observatory (Feb.14-15, 2008) NEW

The data was collected by using the automated 25-cm f/4.2 Schmidt-Cassegrain with a CCD camera cooled to -22 °C and single Johnson V band filter. Exposure time was120 seconds. All images were bias, dark and flat subtracted. Calculated transit starts on 14. Feb. at 19 h 01 min UT (HJD 2454511.29) and ends at 21 h 47 min UT (HJD 2454511.41). Predicted central transit was at 20 h 24 min UT (HJD 2454511.35).

XO-2b Exoplanet Transit Light Curve
149 photometric observations were collected on night of 2008 Feb. 14-15 (start time JD 2454511.2516, end time JD 2454511.5087). Magnitude depth is 0.017 mag. Comparison star (C) was GSC-3413-0210 (V 11.02 mag) and check star (C1) was GSC-3413-0050 (V 12.38 mag). Copyright © 2008 by T. Fabjan and M. Mihelčič, Kobdilj Observatory.

Delta-Scuti type variable VSX J074805.5+501556 (GSC 03413-00339) Light Curve
114 photometric observations were collected on night of 2008 Jan. 24-25 (start time JD 2454511.3264, end time JD 2454511.5104). Comparison star (C) was GSC-3413-01870 (V 11.57 mag) and check star (C1) was GSC-3413-0050 (V 12.38 mag). Data analysis of 347 measurements (Jan 24-25 and Feb 14-15) give the period P = 0.039316 d (+/- 0.000379). Copyright © 2008 by T. Fabjan and M. Mihelčič, Kobdilj Observatory.

Relevant links:
The Extrasolar Planets Encyclopedia
The XO-2b Basic Parameters
XO Project HomePage
Volunteer Observatory XO-2b Discovery Light Curves
VSX J074805.5+501556 Details