Calculating the Solar Day of an Exoplanet? I am currently in the process of compiling a list of stars and their planets, given the information in the European Star Catalogue found here, but I'm struggling to find out how to calculate a planets solar day. To be exact; How long, in earth hours, is the solar day of a planet found in this catalogue?
I know the catalogue is incomplete and that it's likely impossible to calculate the solar day for some of these planets due to this, but that's okay. I could also accept the sidereal day rather than the solar day.
I tried to use the formulas found here but I have a hard time finding out what numbers to plot into the equations, given the information available in the exoplanet catalogue. I've been doing a lot of googling and I'm not an astronomer, so it has been a bit of challenge!
I hope some of you can help me here.
This source doesn't give sufficient information to get the length of either a stellar or sidereal day.  The rotation rate of a body is not governed by the orbital parameters.  The Earth, for example, has a slowing spin rate as the Moon retreats due to tidal interactions.  This doesn't affect the Earth's orbital parameters.
The fields given are:
Name        
Planet Status           
Discovered in       
Mass    
Mass*sin(i) 
Semi-Major Axis
Orbital Period
Eccentricity        
ω       
Tperi       
Radius
Inclination
Update  
Detection Method
Mass Detection Method       
Radius Detection Method     
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0       
Velocity Semiamplitude K
Calculated temperature
Measured temperature    
Hottest point longitude         
Geometric albedo        
Surface gravity log(g/gH)       
Alternate Names