TEPCat: K2-99


 

This page summarises the information held within TEPCat for the transiting planetary system K2-99. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2017MNRAS.464.2708S  
Date of discovery paper 2016 / 9 / 2 y / m / d
Data/telescope used for discovery K2  
Right ascension 13 55 05.70 h m s
Declination −05 26 32.9 d m s
Right ascension (decimal) 208.77375 degrees
Declination (decimal) -5.44247 degrees
V-band apparent magnitude 11.15 mag
K-band apparent magnitude 9.72 mag
Transit duration 0.462
( 11.09 )
day
hour
Transit depth 0.2 %
Time of mid-transit   2458182.7133 ± 0.0005     HJD or BJD
Orbital period 18.24783 ± 0.00003 days
Reference for orbital ephemeris   arXiv:2111.14660  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6069 ± 92 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.20 ± 0.07 dex
Stellar mass 1.44 ± 0.03   Msun
Stellar radius 2.55 ± 0.02 Rsun
Stellar logarithmic surface gravity 3.738 ± 0.004 c.g.s.
Stellar mean density 0.055 ± 0.002
( 0.0776 ± 0.0028 )
ρsun
g cm-3
Orbital eccentricity 0.22 ± 0.01  
Orbital semimajor axis   0.153 ± 0.001  AU
Planetary mass 0.87 ± 0.02
( 276.56 ± 6.36 )
Mjup
Mearth
Planetary radius 1.06 ± 0.01
( 11.88 ± 0.11 )
Rjup
Rearth
Planetary surface gravity 19.5 ± 0.9
3.29 ± 0.02
m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 1184 ± 19 K
Reference of detailed study arXiv:2111.14660  

 

K2-99 does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-99 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2022/12/01           John Southworth   (Keele University, UK)