TEPCat: K2-291


 

This page summarises the information held within TEPCat for the transiting planetary system K2-291. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1901.04558  
Date of discovery paper 2019 / 1 / 16 y / m / d
Right ascension 05 05 46.99 h m s
Declination +21 32 55.0 d m s
V-band apparent magnitude 10.01 mag
K-band apparent magnitude 8.35 mag
Transit duration 0.0716
( 1.718 )
day
hour
Transit depth 0.03 %
Time of mid-transit   2457830.0616 ± 0.0010     HJD or BJD
Orbital period 2.225177 ± 0.000067 days
Reference for orbital ephemeris   arXiv:1901.04558  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5520 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.08 ± 0.04 dex
Stellar mass 0.926 +0.046 −0.048   Msun
Stellar radius 0.904 ± 0.012 Rsun
Stellar logarithmic surface gravity 4.50 ± 0.05 c.g.s.
Stellar mean density 1.26 +0.09 −0.10
( 1.78 +0.13 −0.14 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.03261 ± 0.00044  AU
Planetary mass 0.0201 ± 0.0035
( 6.4 ± 1.1 )
Mjup
Mearth
Planetary radius 0.1411 +0.0033 −0.0037
( 1.582 +0.037 −0.041 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 6.7 ± 1.7
( 8.9 ± 2.3 )
ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study arXiv:1908.06299  

 

K2-291 does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-291 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)