TEPCat: HD 21749c


 

This page summarises the information held within TEPCat for the transiting planetary system HD 21749c. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:2012.04873  
Date of discovery paper 2020 / 12 / 10 y / m / d
Right ascension 03 27 00.05 h m s
Declination −63 30 00.6 d m s
V-band apparent magnitude 8.14 mag
K-band apparent magnitude 5.38 mag
Transit duration 0.1380
( 3.312 )
day
hour
Transit depth 0.04 %
Time of mid-transit   2458332.2783 ± 0.0034     HJD or BJD
Orbital period 7.7902 ± 0.0005 days
Reference for orbital ephemeris   arXiv:2012.04873  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4640 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.003 ± 0.060 dex
Stellar mass 0.73 ± 0.07   Msun
Stellar radius 0.695 ± 0.030 Rsun
Stellar logarithmic surface gravity 4.613 +0.052 −0.061 c.g.s.
Stellar mean density 2.88 +0.53 −0.40
( 4.06 +0.75 −0.56 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.076 ± 0.008  AU
Planetary mass 0.0 +0.011 −0.0
( 0.0 +3.5 −0.0 )
Mjup
Mearth
Planetary radius 0.101 ± 0.010
( 1.13 ± 0.11 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.0 +10.0 −0.0
( 0 +13 − 0 )
ρjup
g cm-3
Planetary equilibrium temperature 676 +11 −10 K
Reference of detailed study arXiv:2012.04873  

 

HD 21749c does not have an entry in the catalogue of orbital obliquity measurements.

 

HD 21749c has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2021/12/02           John Southworth   (Keele University, UK)