TEPCat: AU Mic b


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2020Natur.582..497P  
Date of discovery paper 2020 / 6 / 25 y / m / d
Data/telescope used for discovery TESS  
Right ascension 20 45 09.53 h m s
Declination −31 20 27.2 d m s
Right ascension (decimal) 311.28971 degrees
Declination (decimal) -31.34089 degrees
V-band apparent magnitude 8.63 mag
K-band apparent magnitude 4.53 mag
Transit duration 0.1456
( 3.494 )
day
hour
Transit depth 0.3 %
Time of mid-transit   2458330.39017 ± 0.00072     HJD or BJD
Orbital period 8.46303507 ± 0.00000025 days
Reference for orbital ephemeris   2023AJ....166..232W  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3700 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   dex
Stellar mass 0.50 ± 0.03   Msun
Stellar radius 0.75 ± 0.03 Rsun
Stellar logarithmic surface gravity 4.39 ± 0.03 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.120 +0.089 −0.063  
Orbital semimajor axis   0.0831 +0.0009 −0.0016  AU
Planetary mass 0.12 +0.19 −0.05
( 38 +60 −15 )
Mjup
Mearth
Planetary radius 0.4571 +0.0055 −0.0090
( 5.124 +0.062 −0.101 )
Rjup
Rearth
Planetary surface gravity 13 +23 −6
3.1 +0.4 −0.3
m/s2
log(cgs)
Planetary mean density 1.1 +1.9 −0.5
( 1.46 +2.52 −0.66 )
ρjup
g cm-3
Planetary equilibrium temperature 570 ± 5 K
Reference of detailed study 2023AJ....166..232W  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Hirano et al. (2020)   −4.7   + 6.8   - 6.4  
Martioli et al. (2021)   −0.1   + 5.1   - 5.0  
Palle et al. (2020)   −3.0   + 10.4   - 10.3  
Addison et al. (2021)   5   + 16   - 15  

 

 


Page generated on 2024/04/19           John Southworth   (Keele University, UK)