NGC 55 SySt-1

SUSPECTED NGC55  

Equatorial coordinates
α =  4.030208 | 00 16 07.250000
δ =  -39.275531 | -39 16 31.910000
 
Constellation Sculptor
Symbiotic IR Type  
Spectral Type  
Magnitude range (V)  
Outbursts No

Identifiers

NGC 55 SySt-1 GSC TYC WRAY
SIMBAD  HIP SAO Hen
BD – IRAS  GAIA DR2  ESO
HD 2MASS  WISE  AAVSO

Position

Right ascension (°) 4.030208ref  Parallax (mas) Reddening E(B-V) (mag) 0.013 ± 0.001ref
Declination (°) -39.275531ref  Distance (kpc) 2340 ± 200ref    
Galactic longitude (°) 331.903228ref  Proper motion in α (mas/yr)    
Galactic latitude (°) -75.800139ref  Proper motion in δ (mas/yr)    

Observations

U (mag)   X-Ray   Flickering  
B (mag)   X-Ray type   Outbursts No
V (mag)   IUE No Type  
R (mag)   IRAS flux at 12 μm (Jy)   IPmax (eV)  
I (mag)   IRAS flux at 25 μm (Jy)   OVI lines  
G (mag)   IRAS flux at 60 μm (Jy)      
J (mag)   IRAS flux at 100 μm (Jy)      
H (mag)   WISE W1 (mag)      
K (mag)   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   Mass (M)   Pulsation  
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)   Luminosity (L)      
Upper limit (K)          

Links

 


Notes

Suspected to be a symbiotic binary in Magrini et al. (2017).


References

Last updated: May 12, 2019 @ 9:21 pm