2MASS J05421820-6952493

SUSPECTED LMC  

Equatorial coordinates
α = 85.575836 ± 0.023800 | 05 42 18.200566
δ = -69.880388 ± 0.026800 | -69 52 49.396903
 
Constellation Dorado
Symbiotic IR Type S+IR🡕
Spectral Type  
Magnitude range (V)  
Outbursts No

Identifiers

2MASS J05421820-6952493 GSC TYC WRAY
SIMBAD 2MASS J05421820-6952493 HIP SAO Hen
BD – IRAS  GAIA DR2 4657585547980250496 ESO
HD 2MASS J05421820-6952493 WISE J054218.20-695249.4 AAVSO

Position

Right ascension (°) 85.575836 ± 0.023800ref Parallax (mas) Reddening E(B-V) (mag) 0.933 ± 0.263ref
Declination (°) -69.880388 ± 0.026800ref Distance (kpc) 49.97 ± 0.19ref    
Galactic longitude (°) 280.332687 ± 0.026800ref Proper motion in α (mas/yr) 1.683 ± 0.042ref    
Galactic latitude (°) -31.272753 ± 0.023800ref Proper motion in δ (mas/yr) 0.646 ± 0.054ref    

Observations

U (mag) 18.71ref X-Ray   Flickering  
B (mag) 17.19ref X-Ray type   Outbursts No
V (mag) 15.64ref IUE No Type  
R (mag) 14.67ref IRAS flux at 12 μm (Jy)   IPmax (eV)  
I (mag) 14.03ref IRAS flux at 25 μm (Jy)   OVI lines  
G (mag) 15.14ref IRAS flux at 60 μm (Jy)      
J (mag) 12.95ref IRAS flux at 100 μm (Jy)      
H (mag) 12.17ref WISE W1 (mag) 11.12ref    
K (mag) 11.93ref WISE W2 (mag) 10.24ref    
L (mag)   WISE W3 (mag) 7.53ref    
    WISE W4 (mag) 6.21ref    
    Radio      
    Radio flux (mJy)      

Orbit

Orbital period (days)   γ velocity (km/h)   Size of giant’s orbit (AU)  
Eccentricity   RV of giant (km/h)   Separation (AU)  
Inclination (°)   Inferior conj. of giant (JD)   Mass function  
Ephemeris type       Mass ratio  
Ephemeris T(JD)          

Cool component

Spectral type   Mass (M) 0.60ref Pulsation  
Eff. temperature (K) 5060 ± 250ref
3544ref
Radius (R)   Type  
IR type S+IR🡕, ref Luminosity (L) 4625ref Pulsation period (days)  
Metallicity [Fe/H] -0.5ref     Ephemeris type  
        Ephemeris T(JD)  

Hot component

Type/Spectra   Mass (M)   Spin period (min)  
Eff. temperature (K)   Radius (R)   Accretion disk  
Lower limit (K)   Luminosity (L)      
Upper limit (K)          

Links

SIMBAD     CDS Portal


Notes

Suspected in Kamath et al. (2015) based on its spectra.


References

  • Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A
  • Kamath, D., Wood, P. R., Van Winckel, H., 2015, MNRAS, 454, 1468, 2015MNRAS.454.1468K

Last updated: May 2, 2019 @ 10:57 am