TEPCat: Kepler-448


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-448. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2015A+A...579A..55B  
Date of discovery paper 2015 / 4 / 17 y / m / d
Right ascension 19 49 48.90 h m s
Declination +41 00 39.6 d m s
V-band apparent magnitude 11.38 mag
K-band apparent magnitude 10.23 mag
Transit duration 0.2826
( 6.782 )
day
hour
Transit depth 0.9 %
Time of mid-transit   2454979.59599 ± 0.00027     HJD or BJD
Orbital period 17.8552333 ± 0.0000009 days
Reference for orbital ephemeris   2015A+A...579A..55B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6820 ± 120 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.09 ± 0.15 dex
Stellar mass 1.452 ± 0.093   Msun
Stellar radius 1.63 ± 0.15 Rsun
Stellar logarithmic surface gravity 4.34 ± 0.15 c.g.s.
Stellar mean density 0.335 ± 0.080
( 0.47 ± 0.11 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.72 −0.0  
Orbital semimajor axis   0.151 ± 0.003  AU
Planetary mass 1.1 +3.5 −0.8
( 3497 +11126 −2543 )
Mjup
Mearth
Planetary radius 1.44 ± 0.13
( 16.1 ± 1.5 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2017AJ....154...64M  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Bourrier et al. (2015)   12.6   + 3.0   - 2.9  
Johnson et al. (2017)   −7.1   + 4.2   - 2.8  

 

 

Kepler-448 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/11           John Southworth   (Keele University, UK)