TEPCat: LTT 3780b


 

This page summarises the information held within TEPCat for the transiting planetary system LTT 3780b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2020AJ....160....3C  
Date of discovery paper 2020 / 3 / 3 y / m / d
Data/telescope used for discovery TESS  
Right ascension 10 18 34.78 h m s
Declination −11 43 04.1 d m s
Right ascension (decimal) 154.64492 degrees
Declination (decimal) -11.71781 degrees
V-band apparent magnitude 13.07 mag
K-band apparent magnitude 8.20 mag
Transit duration 0.0341
( 0.818 )
day
hour
Transit depth 0.11 %
Time of mid-transit   2459606.58098 ± 0.00036     HJD or BJD
Orbital period 0.76837931 ± 0.00000041 days
Reference for orbital ephemeris   2024A+A...682A..66B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3358 ± 92 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.06 ± 0.11 dex
Stellar mass 0.381 +0.024 −0.034   Msun
Stellar radius 0.380 ± 0.012 Rsun
Stellar logarithmic surface gravity 4.85 ± 0.11 c.g.s.
Stellar mean density 6.94 ± 0.84
( 9.8 ± 1.2 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.01195 +0.00028 −0.00029  AU
Planetary mass 0.0077 ± 0.0006
( 2.45 ± 0.19 )
Mjup
Mearth
Planetary radius 0.1182 ± 0.0051
( 1.325 ± 0.057 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 4.4 +0.8 −0.6
( 5.84 +1.06 −0.80 )
ρjup
g cm-3
Planetary equilibrium temperature 903 ± 26 K
Reference of detailed study 2024A+A...682A..66B  

 

LTT 3780b does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2024/05/08           John Southworth   (Keele University, UK)