TEPCat: Kepler-492


 

This page summarises the information held within TEPCat for the transiting brown dwarf system Kepler-492. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2013A+A...551L...9D  
Date of discovery paper 2013 / 2 / 13 y / m / d
Data/telescope used for discovery Kepler  
Right ascension 19 41 59.20 h m s
Declination +42 32 16.4 d m s
Right ascension (decimal) 295.49667 degrees
Declination (decimal) 42.53789 degrees
V-band apparent magnitude 14.76 mag
K-band apparent magnitude 12.66 mag
Transit duration 0.1279
( 3.070 )
day
hour
Transit depth 1.0 %
Time of mid-transit   2455186.13609 ± 0.00016     HJD or BJD
Orbital period 11.720126 ± 0.000011 days
Reference for orbital ephemeris   2015A+A...575A..85B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5238 ± 87 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.15 ± 0.14 dex
Stellar mass 0.88 ± 0.05   Msun
Stellar radius 0.90 ± 0.03 Rsun
Stellar logarithmic surface gravity 4.558 ± 0.014 c.g.s.
Stellar mean density 1.53 ± 0.08
( 2.16 ± 0.11 )
ρsun
g cm-3
Orbital eccentricity 0.026 ± 0.018  
Orbital semimajor axis   0.1010 ± 0.0010  AU
Planetary mass 39.7 ± 2.1
( 126202 ± 6676 )
Mjup
Mearth
Planetary radius 0.87 ± 0.02
( 9.75 ± 0.22 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 68.5 +5.4 −5.1
( 90.9 + 7.2 − 6.8 )
ρjup
g cm-3
Planetary equilibrium temperature 737 ± 31 K
Reference of detailed study 2023MNRAS.519.5177C  

 

Kepler-492 does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2024/05/08           John Southworth   (Keele University, UK)