From the Extrasolar Planets Encyclopaedia : http://exoplanet.eu 
Planet : Kepler-4 b
THE PLANET
Basic data : 
 
Name Kepler-4 b
Discovered in2010   
M.sin i0.077 (± 0.012) MJ ref.
Semi major axis0.0456 (± 0.0009) AU ref.
Orbital period3.21346 (± 0.00022) days ref.
Eccentricity  ref.
Radius0.357 (± 0.019) RJ ref.
Ttransit2454956.6127 (± 0.0015)  ref.
Inclination89.76 (−2.05+0.24deg. ref.
Update06/01/10   
No molecule detected
 
 7 related publications :  (sort by author)  (sort by date)
 
 
BORUCKI W., KOCH D., BASRI G., BATALHA N., BROWN T., CALDWELL D., CALDWELL J., CHRISTENSEN-DALSGAARD J., COCHRAN W., DEVORE E., DUNHAM E., DUPREE A., GAUTIER III Th., GEARY J., GILLILAND R., GOULD A., HOWELL S., JENKINS J., KONDO Y., LATHAM D., MARCY G., MEIBOM S., KJELDSEN H., LISSAUER J., MONET D., MORRISON D., SASSELOV D., TARTER J., BOSS A., BROWNLEE D., OWEN T., BUZASI D., CHARBONNEAU D., DOYLE L., FORTNEY J., FORD E., HOLMAN M., SEAGER S., STEFFEN J., WELSH W., ROWE J., ANDERSON H., BUCHHAVE L., CIARDI D., WALKOWICZ L., SHERRY W., HORCH E., ISAACSON H., EVERETT M., FISCHER D., TORRES G., JOHNSON J., ENDL M., MACQUEEN Ph., BRYSON S., DOTSON J., HAAS M., KOLODZIEJCZAK J., VAN CLEVE J., CHANDRASEKARAN H., TWICKEN J., QUINTANA E., CLARKE B., ALLEN Ch., LI J. WU H., TENENBAUM P., VERNER E., BRUHWEILER F., BARNES J. & PRSA A. , 2010
Kepler Planet-Detection Mission: Introduction and First Results
Science , - , 7 Jan.
paper
 
 
BORUCKI W., KOCH D., BROWN T., BASRI G., BATALHA N., CALDWELL D., COCHRAN W., DUNHAM E., GAUTIER III Th., GEARY J., GILLILAND R., HOWELLS., JENKINS J., LATHAM D., LISSAUER J., MARCY G., MONET D., ROWE J. & SASSELOV D. , 2010
Kepler-4b: Hot Neptune-Like Planet of a G0 Star Near Main-Sequence Turnoff
ApJ. Letters , 713 , L126
paper
 
 
WRIGHT J., MARCY G. & the California Planet Survey consortium , 2010
Exoplanet Data Explorer
web page
 
 
KIPPING D. & BAKOS G. , 2010
An Independent Analysis of Kepler-4b through Kepler-8b
ApJ. , - , -
submitted
preprint
 
 
GHEZZI L., CUNHA K., SMITH V., de ARAUJO F., SCHULER S. & de la REZA R. , 2010
Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity
ApJ. , 720 , 1290
paper
 
 
WEIDNER C. & HORNE K. , 2010
Limits on the Orbits and Masses of Moons around Currently-Known Transiting Exoplanets
Astron. & Astrophys. , - , -
accepted
preprint
 
 
DONNISON J. , 2010
The Hill stability of the possible moons of extrasolar planets
MNRAS , 406 , 1918
paper
THE STAR
Basic data :   
More data : 
  - Basic data (from Simbad)
- Most recent ref (from ADS)
 
Name Kepler-4
Distance550 (± 80) pc ref.
Spectral TypeG0   
Apparent Magnitude V12.7   
Mass1.223 (−0.091+0.053Msun ref.
Age4.5 (± 1.5) Gyr ref.
Effective Temperature5857 (± 120) K ref.
Radius1.487 (−0.084+0.071Rsun ref.
Metallicity [Fe/H]0.17 (± 0.06)   ref.
Right Asc. Coord.19 02 28   
Decl. Coord.+50 08 09