TEPCat: HD 22946b


 

This page summarises the information held within TEPCat for the transiting planetary system HD 22946b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2022A+A...668A..85C  
Date of discovery paper 2022 / 9 / 21 y / m / d
Data/telescope used for discovery TESS  
Right ascension 03 39 16.76 h m s
Declination −42 45 45.2 d m s
Right ascension (decimal) 54.81983 degrees
Declination (decimal) -42.76256 degrees
V-band apparent magnitude 8.27 mag
K-band apparent magnitude 6.98 mag
Transit duration 0.1281
( 3.074 )
day
hour
Transit depth 0.02 %
Time of mid-transit   2458385.7321 ± 0.0027     HJD or BJD
Orbital period 4.040205 ± 0.000015 days
Reference for orbital ephemeris   2023A+A...674A..44G  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6169 ± 64 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.08 ± 0.04 dex
Stellar mass 1.098 +0.040 −0.039   Msun
Stellar radius 1.117 ± 0.009 Rsun
Stellar logarithmic surface gravity 4.47 ± 0.11 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.05727 +0.00085 −0.00082  AU
Planetary mass 0.0 +0.043 −0.0
( 0 +13 −0 )
Mjup
Mearth
Planetary radius 0.153 ± 0.009
( 1.71 ± 0.10 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 1241 ± 14 K
Reference of detailed study 2023A+A...674A..44G  

 

HD 22946b does not have an entry in the catalogue of orbital obliquity measurements.

 


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