Target Description
    ==================
      XO-2 is a star with a detected substellar companion, XO-2 b, and
      is a target of the Extrasolar Planet Observation and CHaracterization
      (EPOCh) phase of the NASA EPOXI mission.  Other designations for this
      star are GSC 03413-00005 and 2MASS J07480647+5013328.  The star
      has the following astrometric and photometric properties:
 
        Spectral type        : K0V
        Apparent V Magnitude : 11.18
        Distance             : 149 (-/+4) pc
        Mass                 : 0.98 (-/+0.02) solar masses
        Radius               : 0.964 (-/+0.02) solar radii
        RA                   : 07 48 06.468 (FK5, epoch and equinox 2000)
        Dec                  : +50 13 32.96 (FK5, epoch and equinox 2000)
 
      The substellar companion XO-2 b was discovered in 2007 by the XO
      Project (XO).  The known properties of this extrasolar planet are:
 
        Mass               : 0.57 (-/+0.06) Jupiter masses
        Semi major axis    : 0.0369 (+/-0.002) AU
        Orbital period     : 2.615838 (-/+8e-6) days
        Eccentricity       : 0
        Radius             : 0.973 (-/+0.03) Jupiter radii
        Inclination        : > 88.58 deg
 
      The astrometric and photometric properties were taken from the
      17 March 2009 update for this planetary system in the Extrasolar
      Planets Encyclopedia.  The encyclopedia is maintained by the Paris
      Observatory and is available online at http://exoplanet.eu.  Please
      consult this web site for the most up-to-date properties.