TEPCat: HD 31221


 

This page summarises the information held within TEPCat for the transiting planetary system HD 31221. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2023A+A...673L..14K  
Date of discovery paper 2023 / 5 / 9 y / m / d
Data/telescope used for discovery TESS  
Right ascension 04 54 49.39 h m s
Declination +22 08 47.4 d m s
Right ascension (decimal) 73.70579 degrees
Declination (decimal) 22.14650 degrees
V-band apparent magnitude 8.02 mag
K-band apparent magnitude 7.41 mag
Transit duration 0.17
( 4.1 )
day
hour
Transit depth 0.8 %
Time of mid-transit   2459476.5373 ± 0.0014     HJD or BJD
Orbital period 4.66632 ± 0.00010 days
Reference for orbital ephemeris   2023A+A...673L..14K  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 7712 ± 240 K
Stellar metal abundance ([Fe/H] or [M/H])   dex
Stellar mass 1.447 ± 0.028   Msun
Stellar radius 1.550 ± 0.060 Rsun
Stellar logarithmic surface gravity 4.31 ± 0.08 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis     AU
Planetary mass 11.5 ± 10.3
( 3655 ± 3274 )
Mjup
Mearth
Planetary radius 1.32 ± 0.14
( 14.8 ± 1.6 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2023A+A...673L..14K  

 

HD 31221 does not have an entry in the catalogue of orbital obliquity measurements.

 


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