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 arXiv:2003.01136  
Date of discovery paper 2020 / 3 / 3 y / m / d
Right ascension 10 18 34.78 h m s
Declination −11 43 04.1 d m s
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   2458543.91281 ± 0.00050     HJD or BJD
Orbital period 0.768377 ± 0.0000014 days
Reference for orbital ephemeris   arXiv:2003.01140  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3360 ± 51 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.19 ± 0.16 dex
Stellar mass 0.379 ± 0.016   Msun
Stellar radius 0.382 ± 0.012 Rsun
Stellar logarithmic surface gravity 4.81 ± 0.04 c.g.s.
Stellar mean density 6.8 ± 0.7
( 9.59 ± 0.99 )
ρsun
g cm-3
Orbital eccentricity 0.064 +0.075 −0.046  
Orbital semimajor axis   0.01203 +0.00054 −0.00053  AU
Planetary mass 0.0074 ± 0.0008
( 2.35 ± 0.25 )
Mjup
Mearth
Planetary radius 0.120 ± 0.005
( 1.345 ± 0.056 )
Rjup
Rearth
Planetary surface gravity 12.6 +1.8 −1.6
3.10 +0.06 −0.06
m/s2
log(cgs)
Planetary mean density 3.95 +0.71 −0.61
( 5.24 +0.94 −0.81 )
ρjup
g cm-3
Planetary equilibrium temperature 1000 +98 −100 K
Reference of detailed study arXiv:2003.01140  

 

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

 

LTT 3780b 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)