by Anthony Ayiomamitis
The light curve for exoplanet WASP-24b in Virgo depicted above is the latest exoplanet discovered, having being announced on April 14/2010 along with another six new discoveries, and represents the twenty-fourth discovery by the WASP (Wide Angle Search for Planets) team. WASP-24b is characterized with a mass 1.032 times that of Jupiter while its radius is equivalent to 1.104 Jupiter radii, thus making this exoplanet a very typical "hot Jupiter". WASP-24b requires 155.5 minutes to transit its parent star at a depth of 12 mmag (1.2%). The parent star, GSC 339:329-1, is an F8-9 star estimated to have a mass of 1.129 solar masses, a radius equivalent to 1.147 solar radii, a temperature of 6,075° K and to lie at a distance of 1080 light-years away with a visual magnitude of 11.3. Further details regarding WASP-24 and WASP-24b are available in the paper published by the discovery team led by Rachel Street et al here.
Technical Details:
Date: Apr 22, 2010 @ 00:00:01 - 04:30:58 UT+3
Location: Athens, Greece (38.2997° N, 23.7430° E)
Equipment: AP 160 f/7.5 Starfire EDF, AP 1200GTO GEM, SBIG ST-10XME, SBIG CFW-10, SBIG Lum filter
Integrations: Lum: 129 x 120 sec, Dark: 15 x 120 sec, Flat: ~19,900 ADU, Binning: 2x2
Temperatures: Ambient: +15.0 ° C, CCD Chip: -20.0° C
The C- and K-stars used for the purposes of the differential photometry measurements depicted below were GSC 339:432 (mag 10.47) and GSC 339:520 (mag 10.65) respectively. The light curve below is the first amateur result of this newly discovered exoplanet in the constellation of Virgo.
Further details here.