  We present the direct imaging discovery of an extrasolar planet, or possible
low-mass brown dwarf, at a projected separation of 55 +/- 2 AU (1.058 +/- 0.007
arcsec) from the B9-type star Kappa And. The planet was detected with
Subaru/HiCIAO during the SEEDS survey, and confirmed as a bound companion via
common proper motion measurements. Observed near-infrared magnitudes of J =
16.3 +/- 0.3, H = 15.2 +/- 0.2, Ks = 14.6 +/- 0.4, and L' = 13.12 +/- 0.09
indicate a temperature of ~1700 K. The galactic kinematics of the host star are
consistent with membership in the Columba association, implying a corresponding
age of 30 +20 -10 Myr. The system age, combined with the companion photometry,
points to a model-dependent companion mass ~12.8 MJup. The host star's
estimated mass of 2.4-2.5 Msun places it among the most massive stars ever
known to harbor an extrasolar planet or low-mass brown dwarf. While the mass of
the companion is close to the deuterium burning limit, its mass ratio, orbital
separation, and likely planet-like formation scenario imply that it may be best
defined as a `Super-Jupiter' with properties similar to other recently
discovered companions to massive stars.

Solar and Stellar Astrophysics;Earth and Planetary Astrophysics