Orbital Data and Parent Star Data for: Gl581____ d

quantity unit value 1-sigma uncertainty
Period days 83.4000000 0.4000000
Time of periastron HJD 2452954.1000000 3.7000000
Orbital eccentricity none 0.000 0.000
Argument of perihelion deg 0.000 0.000
Velocity half-amplitude m s^-1 2.700 0.200
M*sin(i) M_Earth 8.485 ---
Stellar mass M_Sun 0.31 ---
Stellar T_eff Kelvin 3200 ---
Planetary T_eff Kelvin 153 ---
Stellar Radius R_Sun 0.290 ---
Predicted Planetary Radius (w/o core) R_Jupiter 0.204 ---
T_circ (w/o core) Gyr ****** ---
T_damp (w/o core) Gyr inf ---


Planet radii from theoretical models of:
Bodenheimer, Laughlin, and Lin 2003, Astrophysical Journal, v. 592, 555-563.

Damping timescales from:
Adams and Laughlin 2006, ApJ : link