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The findings of more than 350 extrasolar planets, most of them nontransitingHot Jupiters, have revealed correlations between the metallicity of themain-sequence (MS) host stars and planetary incidence. This connection can beused to calculate the planet formation probability around other stars, not yetknown to have planetary companions. We locate the promising spots for currenttransit surveys on the celestial plane and strive for absolute values of theexpected number of transits in general. We used data of the Tycho catalog forabout 1 million objects to locate all the stars with 0m < m_V < 11.5m on thecelestial plane. We took several empirical relations between the parameterslisted in the Tycho catalog, such as distance to Earth, m_V, and (B-V), andthose parameters needed to account for the probability of a star to host anobservable, transiting exoplanet. The empirical relations between stellarmetallicity and planet occurrence combined with geometrical considerations wereused to yield transit probabilities for the MS stars in the Tycho catalog.Magnitude variations in the FOV were simulated to test whether thisfluctuations would be detected by BEST, XO, SuperWASP and HATNet. We present asky map of the expected number of Hot Jupiter transit events on the basis ofthe Tycho catalog. The comparison between the considered transit surveys yieldssignificantly differing maps of the expected transit detections. Thesky-integrated magnitude distribution predicts 20 Hot Jupiter transits withorbital periods between 1.5 d and 50 d and m_V < 8m, of which two are currentlyknown. In total, we expect 3412 Hot Jupiter transits to occur in front of MSstars within the given magnitude range. The most promising observing site onEarth is at latitude = -1.

Transit detections of extrasolar planets around main-sequence stars - I. Sky maps for hot Jupiters