TEPCat: K2-89


 

This page summarises the information held within TEPCat for the transiting system K2-89. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016ApJS..226....7C  
Date of discovery paper 2016 / 7 / 19 y / m / d
Right ascension 03 48 16.01 h m s
Declination +20 27 34.7 d m s
V-band apparent magnitude 14.16 mag
K-band apparent magnitude 10.10 mag
Transit duration 0.037
( 0.89 )
day
hour
Transit depth 0.03 %
Time of mid-transit   2457066.00660 ± 0.00230     HJD or BJD
Orbital period 1.096026 ± 0.000065 days
Reference for orbital ephemeris   2016ApJS..226....7C  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3691 ± 51 K
Stellar metal abundance ([Fe/H] or [M/H])   dex
Stellar mass 0.347 ± 0.036   Msun
Stellar radius 0.318 ± 0.033 Rsun
Stellar logarithmic surface gravity 4.965 ± 0.050 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity  
Orbital semimajor axis   0.015 ± 0.001  AU
Planetary mass Mjup
Mearth
Planetary radius 0.055 ± 0.007
( 0.616 ± 0.078 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2016ApJS..226....7C  

 

K2-89 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-89 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)