TEPCat: LTT 1445Ab


 

This page summarises the information held within TEPCat for the transiting planetary system LTT 1445Ab. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2019AJ....158..152W  
Date of discovery paper 2019 / 6 / 26 y / m / d
Data/telescope used for discovery TESS  
Right ascension 03 01 51.39 h m s
Declination −16 35 36.1 d m s
Right ascension (decimal) 45.46413 degrees
Declination (decimal) -16.59336 degrees
V-band apparent magnitude 11.22 mag
K-band apparent magnitude 6.50 mag
Transit duration 0.05694
( 1.3666 )
day
hour
Transit depth 0.2 %
Time of mid-transit   2458412.70899 ± 0.00040     HJD or BJD
Orbital period 5.3587643 ± 0.0000040 days
Reference for orbital ephemeris   arXiv:2307.02970  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3337 ± 150 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.34 ± 0.08 dex
Stellar mass 0.257 ± 0.014   Msun
Stellar radius 0.270 ± 0.010 Rsun
Stellar logarithmic surface gravity 4.983 +0.044 −0.045 c.g.s.
Stellar mean density 13.0 +2.0 −1.7
( 18.3 + 2.8 − 2.4 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.223 −0.0  
Orbital semimajor axis   0.03808 +0.00068 −0.00070  AU
Planetary mass 0.0086 ± 0.0008
( 2.73 ± 0.25 )
Mjup
Mearth
Planetary radius 0.1195 +0.0098 −0.0054
( 1.339 +0.110 −0.061 )
Rjup
Rearth
Planetary surface gravity 16.5 +2.0 −1.9
3.22 +0.05 −0.05
m/s2
log(cgs)
Planetary mean density 4.7 +0.9 −1.0
( 6.2 +1.2 −1.3 )
ρjup
g cm-3
Planetary equilibrium temperature 424 ± 21 K
Reference of detailed study arXiv:2307.02970  

 

LTT 1445Ab does not have an entry in the catalogue of orbital obliquity measurements.

 


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