TEPCat: AU Mic


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:2006.13248  
Date of discovery paper 2020 / 6 / 25 y / m / d
Right ascension 20 45 09.53 h m s
Declination −31 20 27.2 d m s
V-band apparent magnitude 8.63 mag
K-band apparent magnitude 4.53 mag
Transit duration 0.146
( 3.50 )
day
hour
Transit depth 0.3 %
Time of mid-transit   2458330.39153 ± 0.00069     HJD or BJD
Orbital period 8.46321 ± 0.000004 days
Reference for orbital ephemeris   arXiv:2006.13248  

 

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 0.10 +0.17 −0.09  
Orbital semimajor axis   0.066 +0.007 −0.008  AU
Planetary mass 0.054 ± 0.014
( 17.2 ± 4.5 )
Mjup
Mearth
Planetary radius 0.375 ± 0.018
( 4.20 ± 0.20 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study arXiv:2011.13357  

 

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

 

 

AU Mic has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2021/01/04           John Southworth   (Keele University, UK)