M31SyS J004216.70+404415.7

CONFIRMED M31  

Equatorial coordinates
α =  10.570000 | 00 42 16.800000
δ =  40.737810 | +40 44 16.100000
 
Constellation Andromeda
Symbiotic IR Type S
Spectral Type M
Magnitude range (V)  
Outbursts No

Identifiers

M31SyS J004216.70+404415.7 GSC TYC WRAY
SIMBAD LGGS J004216.72+404415.8 HIP SAO Hen
BD – IRAS  GAIA DR2 ESO
HD 2MASS J00421671+4044158 WISE  AAVSO

Position

Right ascension (°) 10.570000ref Parallax (mas) Reddening E(B-V) (mag) 0.117 ± 0.027ref
Declination (°) 40.737810ref Distance (kpc) 785.00 ± 25.00ref    
Galactic longitude (°) 121.059770ref Proper motion in α (mas/yr)    
Galactic latitude (°) -22.100650ref Proper motion in δ (mas/yr)    

Observations

U (mag) 20.98ref X-Ray   Flickering  
B (mag) 21.30ref X-Ray type   Outbursts No
V (mag) 24.96ref IUE No Type  
R (mag)   IRAS flux at 12 μm (Jy)   IPmax (eV) 54.4ref
I (mag) 19.39ref IRAS flux at 25 μm (Jy)   OVI lines Noref
G (mag)   IRAS flux at 60 μm (Jy)      
J (mag) 18.05ref IRAS flux at 100 μm (Jy)      
H (mag) 17.90ref WISE W1 (mag)      
K (mag) 16.80ref WISE W2 (mag)      
L (mag)   WISE W3 (mag)      
    WISE W4 (mag)      
    Radio      
    Radio flux (mJy)      

Orbit

Orbital period (days) ∼720?ref 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 Mref 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) 54000ref Luminosity (L)      
Upper limit (K) 90000ref        

Links

SIMBAD     CDS Portal


Notes

There is a red variable, [PAC] 57435, very close, with P∼720 d, which seems to be the same object (Mikołajewska et al., 2014).


References

Last updated: Jan 14, 2019 @ 9:53 am