From the Extrasolar Planets Encyclopaedia : http://exoplanet.eu 
Planet : BD+20 1790 b
THE PLANET
Basic data : 
 
Name BD+20 1790 b
Discovered in2009   
M.sin i6.54 (± 0.57) MJ ref.
Semi major axis0.066 (± 0.001) AU ref.
Orbital period7.7834 (± 0.0004) days ref.
Eccentricity0.05 (± 0.02)   ref.
ω200.4 (± 21.8) deg. ref.
Tperi3085.8 (± 0.5) JD 2.450.000 ref.
Update17/12/09   
No molecule detected
 
Remarks : 
 17 Dec. 2009: Herman Obispo et al (2010) give also a slightly different oribit with Mpl = 6.15 ± 0.6 MJup and e = 0.14 ± 0.4
 4 related publications :  (sort by author)  (sort by date)
THE STAR
Basic data :   
More data : 
  - Basic data (from Simbad)
- Most recent ref (from ADS)
 
Name BD+20 1790
Distance25.4 (± 4) pc ref.
Spectral TypeK5V   
Apparent Magnitude V9.93   
Mass0.63 (± 0.09) Msun ref.
Age0.057 (± 0.023) Gyr ref.
Effective Temperature4410 K ref.
Radius0.71 (± 0.03) Rsun ref.
Metallicity [Fe/H]0.3 (± 0.2)   ref.
Right Asc. Coord.07 23 44   
Decl. Coord.+20 24 51