TEPCat: K2-9b


 

This page summarises the information held within TEPCat for the transiting system K2-9b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2015ApJ...809...25M  
Date of discovery paper 2015 / 8 / 13 y / m / d
Right ascension 11 45 03.47 h m s
Declination +00 00 19.1 d m s
V-band apparent magnitude 14.54 mag
K-band apparent magnitude 11.49 mag
Transit duration 0.12
( 2.9 )
day
hour
Transit depth 0.04 %
Time of mid-transit   2456822.6723 ± 0.0030     HJD or BJD
Orbital period 18.44883 ± 0.00137 days
Reference for orbital ephemeris   2015ApJ...809...25M  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3468 +20 −19 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.46 +0.12 −0.10 dex
Stellar mass 0.24 +0.05 −0.03   Msun
Stellar radius 0.25 +0.04 −0.03 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0848 ± 0.0050  AU
Planetary mass Mjup
Mearth
Planetary radius 0.143 ± 0.037
( 1.60 ± 0.41 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 284 ± 14 K
Reference of detailed study 2015ApJ...809...25M  

 

K2-9b does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-9b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/13           John Southworth   (Keele University, UK)