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 arXiv:1906.10147  
Date of discovery paper 2019 / 6 / 26 y / m / d
Right ascension 03 01 51.39 h m s
Declination −16 35 36.1 d m s
V-band apparent magnitude 11.22 mag
K-band apparent magnitude 6.50 mag
Transit duration 0.058
( 1.39 )
day
hour
Transit depth 0.2 %
Time of mid-transit   2458412.70851 ± 0.00040     HJD or BJD
Orbital period 5.3587657 ± 0.0000043 days
Reference for orbital ephemeris   arXiv:2107.14737  

 

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 0.268 ± 0.027 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 +0.110 −0.0  
Orbital semimajor axis   0.02661 +0.00047 −0.00049  AU
Planetary mass 0.0090 ± 0.0008
( 2.86 ± 0.25 )
Mjup
Mearth
Planetary radius 0.1164 +0.0059 −0.0054
( 1.305 +0.066 −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 5.35 +0.90 −0.83
( 7.1 +1.2 −1.1 )
ρjup
g cm-3
Planetary equilibrium temperature 424 ± 21 K
Reference of detailed study arXiv:2107.14737  

 

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

 

LTT 1445Ab 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)