TEPCat: HD 21749


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1901.00051  
Date of discovery paper 2019 / 1 / 1 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 0.14 %
Time of mid-transit   2458350.31233 ± 0.00061     HJD or BJD
Orbital period 35.6077 ± 0.0014 days
Reference for orbital ephemeris   arXiv:1901.00051  

 

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 2.15 +0.35 −0.33
( 3.03 +0.49 −0.47 )
ρsun
g cm-3
Orbital eccentricity 0.198 +0.073 −0.077  
Orbital semimajor axis   0.1914 +0.0056 −0.0061  AU
Planetary mass 0.0730 +0.0067 −0.0060
( 23.2 +2.1 −1.9 )
Mjup
Mearth
Planetary radius 0.253 +0.023 −0.020
( 2.84 +0.26 −0.22 )
Rjup
Rearth
Planetary surface gravity 28.6 +5.8 −5.0
3.46 +0.08 −0.08
m/s2
log(cgs)
Planetary mean density 4.3 +1.3 −1.1
( 5.7 +1.7 −1.5 )
ρjup
g cm-3
Planetary equilibrium temperature 423 +14 −13 K
Reference of detailed study arXiv:1901.00051  

 

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

 

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

 


Page generated on 2019/07/16           John Southworth   (Keele University, UK)