TEPCat: GJ 3470


 

This page summarises the information held within TEPCat for the transiting planetary system GJ 3470. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2012A+A...546A..27B  
Date of discovery paper 2012 / 6 / 26 y / m / d
Right ascension 07 59 05.87 h m s
Declination +15 23 29.4 d m s
V-band apparent magnitude 12.27 mag
K-band apparent magnitude 7.99 mag
Transit duration 0.07992
( 1.9181 )
day
hour
Transit depth 0.7 %
Time of mid-transit   2455983.70417 ± 0.00011     HJD or BJD
Orbital period 3.33665173 ± 0.00000059 days
Reference for orbital ephemeris   2017A+A...600A.138C  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3652 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.17 ± 0.06 dex
Stellar mass 0.51 ± 0.06   Msun
Stellar radius 0.48 ± 0.04 Rsun
Stellar logarithmic surface gravity 4.78 ± 0.12 c.g.s.
Stellar mean density 3.39 +0.30 −0.32
( 4.78 +0.42 −0.45 )
ρsun
g cm-3
Orbital eccentricity 0.017 +0.016 −0.012  
Orbital semimajor axis   0.03557 +0.00096 −0.00100  AU
Planetary mass 0.0432 ± 0.0051
( 13.7 ± 1.6 )
Mjup
Mearth
Planetary radius 0.346 ± 0.029
( 3.88 ± 0.33 )
Rjup
Rearth
Planetary surface gravity 6.8 ± 1.7
2.83 ± 0.10
m/s2
log(cgs)
Planetary mean density 0.89 ± 0.25
( 1.18 ± 0.33 )
ρjup
g cm-3
Planetary equilibrium temperature 604 ± 98 K
Reference of detailed study 2014MNRAS.443.1810B  

 

GJ 3470 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

GJ 3470 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/11           John Southworth   (Keele University, UK)