TEPCat: LTT 9779


 

This page summarises the information held within TEPCat for the transiting planetary system LTT 9779. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2020NatAs...4.1148J  
Date of discovery paper 2020 / 9 / 29 y / m / d
Data/telescope used for discovery TESS  
Right ascension 23 54 40.60 h m s
Declination −37 37 42.2 d m s
Right ascension (decimal) 358.66917 degrees
Declination (decimal) -37.62839 degrees
V-band apparent magnitude 9.76 mag
K-band apparent magnitude 8.02 mag
Transit duration 0.035
( 0.84 )
day
hour
Transit depth 0.2 %
Time of mid-transit   2459043.310602 ± 0.000090     HJD or BJD
Orbital period 0.79206410 ± 0.00000014 days
Reference for orbital ephemeris   arXiv:2306.13645  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5445 ± 84 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.25 ± 0.08 dex
Stellar mass 1.03 +0.03 −0.04   Msun
Stellar radius 0.95 ± 0.01 Rsun
Stellar logarithmic surface gravity 4.43 ± 0.31 c.g.s.
Stellar mean density 1.28 +0.04 −0.05
( 1.806 +0.056 −0.071 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.01679 +0.00014 −0.00012  AU
Planetary mass 0.0922 ± 0.0025
( 29.31 ± 0.79 )
Mjup
Mearth
Planetary radius 0.421 ± 0.021
( 4.72 ± 0.24 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 1.158 ± 0.093
( 1.54 ± 0.12 )
ρjup
g cm-3
Planetary equilibrium temperature 1978 ± 19 K
Reference of detailed study 2020NatAs...4.1148J  

 

LTT 9779 does not have an entry in the catalogue of orbital obliquity measurements.

 


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