Qatar-1b is a hot Jupiter orbiting a metal-rich K dwarf star, the first planet discovered by the Alsubai Project exoplanet transit method. The strategy used to select candidates for transiting planets from the photometry generated by the Alsubai Project instrument is described. We examined the rate of astrophysical and other false positives found during spectroscopic exploration of the initial batch of candidates. A simultaneous form to the radial velocities of tracking and photometry of Qatar-1b gave a planetary mass of 1.09 +/- 0.08 Mjup and a radius of 1.16 +/- 0.05 Rjup.

The orbital period and separation are 1.420033 days and 0.0234 AU for a circular orbit. Stellar density, effective temperature and rotation rate indicate an age greater than 4 Gyr for the system.

Observations of Qatar-1b

Collaborative projects