TEPCat: HD 149026


 

This page summarises the information held within TEPCat for the transiting planetary system HD 149026. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2005ApJ...633..465S  
Date of discovery paper 2005 / 5 / 31 y / m / d
Data/telescope used for discovery other  
Right ascension 16 30 29.62 h m s
Declination +38 20 50.3 d m s
Right ascension (decimal) 247.62342 degrees
Declination (decimal) 38.34731 degrees
V-band apparent magnitude 8.16 mag
K-band apparent magnitude 6.82 mag
Transit duration 0.135
( 3.24 )
day
hour
Transit depth 0.3 %
Time of mid-transit   2454456.78760 ± 0.00016     HJD or BJD
Orbital period 2.87588874 ± 0.00000059 days
Reference for orbital ephemeris   2018AJ....155...83Z  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6147 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.36 ± 0.05 dex
Stellar mass 1.345 ± 0.020   Msun
Stellar radius 1.541 +0.046 −0.042 Rsun
Stellar logarithmic surface gravity 4.189 +0.020 −0.021 c.g.s.
Stellar mean density 0.353 +0.030 −0.040
( 0.498 +0.042 −0.056 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.04313 +0.00065 −0.00056  AU
Planetary mass 0.368 +0.013 −0.014
( 116.98 +4.13 −4.45 )
Mjup
Mearth
Planetary radius 0.813 +0.027 −0.025
( 9.11 +0.30 −0.28 )
Rjup
Rearth
Planetary surface gravity 13.55 +0.94 −1.05
3.13 +0.03 −0.04
m/s2
log(cgs)
Planetary mean density 0.68 +0.08 −0.07
( 0.902 +0.106 −0.093 )
ρjup
g cm-3
Planetary equilibrium temperature 1634 +90 −23 K
Reference of detailed study 2009ApJ...696..241C  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Wolf et al. (2007)   −12   ±   15  
Albrecht et al. (2012)   12   ±   7  

 

 


Page generated on 2024/04/19           John Southworth   (Keele University, UK)