M31SyS J004323.68+413733.6
        
      
        
  
    
    
    CONFIRMED
    M31  
    
Constellation 
Andromeda | 
Equatorial coordinates 
α = 00 43 23.682 
δ =  +41 37 33.557 | 
Galactic coordinates 
l = 121.3196°  
b = -21.2206°  | 
 
  
| Suspected | 
2014Ref | 
 
| Confirmed | 
2014Ref | 
 
| Symbiotic IR type | 
SRef | 
 
| Hot component type | 
shell-burningRef | 
 
| Outbursts | 
- | 
 
 
   | 
    
      
      
      
     | 
  
     
    
    
      
      
  Symbiotic Catalogs
  
| Bidelman (1954) | 
- | 
Allen (1984) | 
- | 
Belzcyński et al. (2001) | 
- | 
| Gaposchkin (1957) | 
- | 
Kenyon (1986) | 
- | 
Akras et al. (2019) | 
M31 SySt-20 (Conf.) | 
| Boyarchuk (1969) | 
- | 
Vaidis (1988, 1991) | 
- | 
   
  
  
Position
| Right ascension (°) | 
10.8487Ref | 
Parallax (mas) | 
- | 
Reddening E(B-V) (mag) | 
0.26±0.03Ref, Note | 
| Declination (°) | 
41.6260Ref | 
Distance (kpc) | 
785±25Ref -, Note | 
  | 
  | 
| Galactic longitude (°) | 
121.3196Ref | 
Proper motion in α (mas/yr) | 
- | 
  | 
  | 
| Galactic latitude (°) | 
-21.2206Ref | 
Proper motion in δ (mas/yr) | 
- | 
  | 
  | 
 
  
  
Observations
  
     | X-Ray | 
     NoRef | 
     IR type | 
     SRef | 
     Radio | 
     - | 
   
   
     | X-Ray type | 
     - | 
     J (mag) | 
     - | 
     Flickering | 
     - | 
   
   
     | GALEX FUV (mag) | 
     - | 
     H (mag) | 
     - | 
     Outbursts | 
     - | 
   
   
     | GALEX NUV (mag) | 
     - | 
     K (mag) | 
     - | 
     Outburst type | 
     - | 
   
   
     | IUE | 
     NoRef | 
     WISE W1 (mag) | 
     15.52Ref | 
     Jets | 
     - | 
   
   
     | FUSE | 
     NoRef | 
     WISE W2 (mag) | 
     14.93Ref | 
     Resolved nebula | 
     - | 
   
   
     | U (mag) | 
     - | 
     WISE W3 (mag) | 
     12.57Ref | 
     IPmax (eV) | 
     114Ref | 
   
   
     | B (mag) | 
     23.10Ref | 
     WISE W4 (mag) | 
     9.21Ref | 
     [O III] lines | 
     YesRef | 
   
   
     | V (mag) | 
     22.50Ref | 
     IRAS 12μm (Jy) | 
     - | 
     He II lines | 
     YesRef | 
   
   
     | R (mag) | 
     - | 
     IRAS 25μm (Jy) | 
     - | 
     [Fe VII] lines | 
     YesRef | 
   
   
     | I (mag) | 
     20.91Ref | 
     IRAS 60μm (Jy) | 
     - | 
     O VI lines | 
     YesRef | 
   
   
     | BP (mag) | 
     - | 
     IRAS 100μm (Jy) | 
     - | 
      | 
      | 
   
   
     | G (mag) | 
     - | 
     AKARI S09 (Jy) | 
     - | 
      | 
      | 
   
   
     | RP (mag) | 
     - | 
     AKARI S18 (Jy) | 
     - | 
      | 
      | 
   
 
Orbit
| Orbital period (days) | 
~1000?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 | 
- | 
| Eclipses | 
- | 
  | 
  | 
Mass ratio | 
- | 
| Orbital ephemeris | 
- | 
  | 
  | 
  | 
  | 
 
Cool component
| Spectral type | 
- | 
Mass (M⊙) | 
- | 
Pulsation | 
- | 
| Eff. temperature (K) | 
- | 
Radius (R⊙) | 
- | 
Type | 
- | 
| IR type | 
SRef | 
Luminosity (L⊙) | 
- | 
Pulsation period (days) | 
- | 
| Metallicity [Fe/H] | 
- | 
  | 
  | 
Pulsation ephemeris | 
- | 
 
Hot component
| Type/Spectral type | 
- | 
Mass (M⊙) | 
- | 
Spin period (min) | 
- | 
  | Shell-burning/Accreting-only | 
  shell-burningRef | 
Radius (R⊙) | 
- | 
Accretion disk | 
- | 
  | Eff. temperature (K) | 
  - | 
Luminosity (L⊙) | 
- | 
  | 
  | 
  | Lower limit (K) | 
  114000Ref | 
  | 
  | 
  | 
  | 
| Upper limit (K) | 
170000Ref | 
  | 
  | 
  | 
  | 
 
References
- Mikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 1, 586, 2014MNRAS.444..586M
 
- Vilardell, F., Ribas, I., Jordi, C., 2006, A&A, 459, 1, 321, 2006A&A...459..321V
 
 
Last updated: January 12, 2019