TEPCat: HD 189733


 

This page summarises the information held within TEPCat for the transiting planetary system HD 189733. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2005A+A...444L..15B  
Date of discovery paper 2005 / 9 / 29 y / m / d
Data/telescope used for discovery other  
Right ascension 20 00 43.71 h m s
Declination +22 42 39.1 d m s
Right ascension (decimal) 300.18213 degrees
Declination (decimal) 22.71086 degrees
V-band apparent magnitude 7.68 mag
K-band apparent magnitude 5.54 mag
Transit duration 0.07529
( 1.8070 )
day
hour
Transit depth 2.6 %
Time of mid-transit   2459446.498519 ± 0.000013     HJD or BJD
Orbital period 2.218575198 ± 0.000000071 days
Reference for orbital ephemeris   2023A+A...672A..24K  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4969 ± 43 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.03 ± 0.05 dex
Stellar mass 0.783 ± 0.041   Msun
Stellar radius 0.784 ± 0.007 Rsun
Stellar logarithmic surface gravity 4.51 ± 0.03 c.g.s.
Stellar mean density 1.625 ± 0.094
( 2.29 ± 0.13 )
ρsun
g cm-3
Orbital eccentricity 0.0041 +0.0025 −0.0020  
Orbital semimajor axis   0.03142 ± 0.00052  AU
Planetary mass 1.150 ± 0.039
( 365 ± 12 )
Mjup
Mearth
Planetary radius 1.151 ± 0.038
( 12.90 ± 0.43 )
Rjup
Rearth
Planetary surface gravity 21.5 ± 1.2
3.33 ± 0.02
m/s2
log(cgs)
Planetary mean density 0.75 ± 0.07
( 0.995 ± 0.093 )
ρjup
g cm-3
Planetary equilibrium temperature 1191 ± 20 K
Reference of detailed study 2023A+A...672A..24K  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Winn et al. (2006)   −1.4   ±   1.1  
Triaud et al. (2009)   0.85   + 0.28   - 0.32  
Collier Cameron et al. (2010)   −0.50   ±   0.30  
Dumusque (2014)   −999   ±   -999  
Cegla et al. (2016)   −0.4   ±   0.2  
Casasayas-Barris et al. (2017)   −0.31   + 0.18   - 0.17  
Cristo et al. (2023)   −1.00   + 0.22   - 0.23  

 

 


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