M33SyS J013311.10+301528.2

CONFIRMED M33  

Equatorial coordinates
α =  23.295983 | 01 33 11.036000
δ =  30.257719 | +30 15 27.790000
 
Constellation Triangulum
Symbiotic IR Type  
Spectral Type M5
Magnitude range (V)  
Outbursts No

Identifiers

M33SyS J013311.10+301528.2 GSC TYC WRAY
SIMBAD M33SyS J013311.10+301528.2 HIP SAO Hen
BD – IRAS  GAIA DR2 – ESO
HD 2MASS  WISE  AAVSO

Position

Right ascension (°) 23.295983ref   Parallax (mas) Reddening E(B-V) (mag) 0.044 ± 0.002ref
Declination (°) 30.257719ref Distance (kpc) 847.00 ± 60.00ref    
Galactic longitude (°) 133.535316ref Proper motion in α (mas/yr)    
Galactic latitude (°) -31.753050ref Proper motion in δ (mas/yr)    

Observations

U (mag)   X-Ray   Flickering  
B (mag)   X-Ray type   Outbursts No
V (mag) 23.25ref IUE No Type  
R (mag) 21.53ref IRAS flux at 12 μm (Jy)   IPmax (eV) 114.0ref
I (mag) 20.32ref IRAS flux at 25 μm (Jy)   OVI lines Yesref
G (mag)   IRAS flux at 60 μm (Jy)      
J (mag) 18.73ref IRAS flux at 100 μm (Jy)      
H (mag) 17.79ref WISE W1 (mag)      
K (mag) 17.48ref WISE W2 (mag)      
L (mag)   WISE W3 (mag)      
    WISE W4 (mag)      
    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 M5ref Mass (M)   Pulsation Yesref
Eff. temperature (K)   Radius (R)   Type  
IR type   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) 114000ref Luminosity (L)      
Upper limit (K) 159000ref        

Links

SIMBAD     CDS Portal


Notes

Its light curve seem to be dominated by the red giant pulsations (Mikołajewska et al., 2017).


References

  • Mikołajewska, J., Shara, M. M., Caldwell, N., et al., 2017, MNRAS, 465, 699, 2017MNRAS.465.1699M

Last updated: Jan 13, 2019 @ 12:51 pm