  The Transiting Exoplanet Survey Satellite (TESS) is a NASA-sponsored Explorer
mission that will perform a wide-field survey for planets that transit bright
host stars. Here, we predict the properties of the transiting planets that TESS
will detect along with the eclipsing binary stars that produce false-positive
photometric signals. The predictions are based on Monte Carlo simulations of
the nearby population of stars, occurrence rates of planets derived from
Kepler, and models for the photometric performance and sky coverage of the TESS
cameras. We expect that TESS will find approximately 1700 transiting planets
from 200,000 pre-selected target stars. This includes 556 planets smaller than
twice the size of Earth, of which 419 are hosted by M dwarf stars and 137 are
hosted by FGK dwarfs. Approximately 130 of the $R < 2~R_\oplus$ planets will
have host stars brighter than K = 9. Approximately 48 of the planets with $R <
2~R_\oplus$ lie within or near the habitable zone ($0.2 < S/S_\oplus < 2$), and
between 2-7 such planets have host stars brighter than K = 9. We also expect
approximately 1100 detections of planets with radii 2-4 R_Earth, and 67 planets
larger than $4~R_\oplus$. Additional planets larger than $2~R_\oplus$ can be
detected around stars that are not among the pre-selected target stars, because
TESS will also deliver full-frame images at a 30-minute cadence. The planet
detections are accompanied by over one thousand astrophysical false positives.
We discuss how TESS data and ground-based observations can be used to
distinguish the false positives from genuine planets. We also discuss the
prospects for follow-up observations to measure the masses and atmospheres of
the TESS planets.
