TEPCat: HAT-P-55


 

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-55. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2015PASP..127..851J  
Date of discovery paper 2015 / 6 / 12 y / m / d
Data/telescope used for discovery HAT  
Right ascension 17 37 05.52 h m s
Declination +25 43 52.3 d m s
Right ascension (decimal) 264.27300 degrees
Declination (decimal) 25.73119 degrees
V-band apparent magnitude 13.21 mag
K-band apparent magnitude 11.63 mag
Transit duration 0.1223
( 2.935 )
day
hour
Transit depth 1.8 %
Time of mid-transit   2458311.92255 ± 0.00013     HJD or BJD
Orbital period 3.58523130 ± 0.00000051 days
Reference for orbital ephemeris   2024MNRAS.528.1930K  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5804 ± 37 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.003 +0.049 −0.032 dex
Stellar mass 1.028 +0.050 −0.048   Msun
Stellar radius 1.105 +0.018 −0.017 Rsun
Stellar logarithmic surface gravity 4.363 +0.014 −0.013 c.g.s.
Stellar mean density 0.760 +0.026 −0.025
( 1.072 +0.037 −0.035 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.139 −0.0  
Orbital semimajor axis   0.04628 +0.00074 −0.00072  AU
Planetary mass 0.596 +0.073 −0.072
( 189 +23 −22 )
Mjup
Mearth
Planetary radius 1.324 +0.023 −0.022
( 14.84 + 0.26 − 0.25 )
Rjup
Rearth
Planetary surface gravity 8.4 ± 1.0
2.92 ± 0.05
m/s2
log(cgs)
Planetary mean density 0.240 +0.030 −0.029
( 0.318 +0.040 −0.038 )
ρjup
g cm-3
Planetary equilibrium temperature 1367 ± 11 K
Reference of detailed study 2024MNRAS.528.1930K  

 

HAT-P-55 does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2024/03/28           John Southworth   (Keele University, UK)