TEPCat: HD 77946


 

This page summarises the information held within TEPCat for the transiting planetary system HD 77946. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2024MNRAS.529.3323P  
Date of discovery paper 2024 / 3 / 8 y / m / d
Data/telescope used for discovery TESS  
Right ascension 09 07 06.63 h m s
Declination +46 40 20.7 d m s
Right ascension (decimal) 136.77763 degrees
Declination (decimal) 46.67242 degrees
V-band apparent magnitude 9.00 mag
K-band apparent magnitude 7.62 mag
Transit duration 0.148
( 3.55 )
day
hour
Transit depth 0.04 %
Time of mid-transit   2459587.4740 ± 0.0011     HJD or BJD
Orbital period 6.527282 ± 0.000018 days
Reference for orbital ephemeris   2024MNRAS.529.3323P  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6046 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.18 ± 0.05 dex
Stellar mass 1.17 +0.06 −0.05   Msun
Stellar radius 1.31 ± 0.01 Rsun
Stellar logarithmic surface gravity 4.27 +0.03 −0.02 c.g.s.
Stellar mean density 0.395 +0.051 −0.050
( 0.557 +0.072 −0.071 )
ρsun
g cm-3
Orbital eccentricity 0.233 +0.064 −0.079  
Orbital semimajor axis   0.0720 ± 0.0012  AU
Planetary mass 0.0264 ± 0.0042
( 8.4 ± 1.3 )
Mjup
Mearth
Planetary radius 0.2413 +0.0077 −0.0072
( 2.705 +0.086 −0.081 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 1.86 +0.35 −0.34
( 2.47 +0.46 −0.45 )
ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2024MNRAS.529.3323P  

 

HD 77946 does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2025/02/12           John Southworth   (Keele University, UK)