XMMU J172013.3+575051

CONFIRMED Draco Dwarf  

Equatorial coordinates
α =  260.055778 ± 0.084400 | 17 20 13.386819
δ =  57.847688 ± 0.080900 | +57 50 51.676814
 
Constellation Draco
Symbiotic IR Type S
Spectral Type  
Magnitude range (V)  
Outbursts No

Identifiers

XMMU J172013.3+575051 GSC TYC WRAY
SIMBAD [BS61] 522 HIP SAO Hen
BD – IRAS GAIA DR2 1433154621589898880 ESO
HD 2MASS J17201332+5750514 WISE J172013.37+575051.6 AAVSO

Position

Right ascension (°) 260.055778 ± 0.084400ref  Parallax (mas) Reddening E(B-V) (mag) 0.023 ± 0.001ref
Declination (°) 57.847688 ± 0.080900ref Distance (kpc) 80 ± 10ref     
Galactic longitude (°) 86.285585 ± 0.080900ref Proper motion in α (mas/yr)    
Galactic latitude (°) 34.723616 ± 0.084400ref   Proper motion in δ (mas/yr)    

Observations

U (mag)   X-Ray Yesref Flickering  
B (mag) 19.13 X-Ray type βref Outbursts No
V (mag) 18.18ref IUE No Type  
R (mag)   IRAS flux at 12 μm (Jy)   IPmax (eV)  
I (mag) 16.94ref IRAS flux at 25 μm (Jy)   OVI lines  
G (mag) 17.79ref IRAS flux at 60 μm (Jy)      
J (mag) 16.31ref IRAS flux at 100 μm (Jy)      
H (mag) 15.68ref WISE W1 (mag) 15.33ref    
K (mag) 15.42ref WISE W2 (mag) 15.47ref    
L (mag)   WISE W3 (mag) 12.50ref    
    WISE W4 (mag) 9.09ref    
    Radio      
    Radio flux (mJy)      

Orbit

Orbital period (days)   γ velocity (km/h) -283.24ref 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)   Pulsation  
Eff. temperature (K)   Radius (R)   Type  
IR type Sref Luminosity (L)   Pulsation period (days)  
Metallicity [Fe/H]       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

This X-ray source was identified as a symbiotic binary by Saeedi et al. (2019).


References

Last updated: Jun 11, 2019 @ 9:18 am