StHA 176

CONFIRMED MILKY WAY
 
Constellation
Capricornus
Equatorial coordinates
α = 20 22 42.271
δ = -21 07 54.734
Galactic coordinates
l = 22.6528°
b = -29.0979°

Suspected 1988Ref
Confirmed 2002Ref
Symbiotic IR type SRef
Hot component type shell-burningRef
Outbursts -

Identifiers

StHA 176 IRAS - GSC2.4.2 SC5B000640 AAVSO 000-BDC-278
SIMBAD ATO J305.6761-21.1318 Pan-STARRS 82643056762622034 SAO - VSX 118839
GAIA DR3 6859282948915521664 SkyMapper 202242.27-210754.5 WRAY - GCVS -
2MASS J20224225-2107546 HIP - Hen - BD -
WISE J202242.26-210754.6 TYC - ESO - HD -

Symbiotic Catalogs

Bidelman (1954) - Allen (1984) - Belzcyński et al. (2001) -
Gaposchkin (1957) - Kenyon (1986) - Akras et al. (2019) StHA 176 (Conf.)
Boyarchuk (1969) - Vaidis (1988, 1991) -

Position

Right ascension (°) 305.6761Ref Parallax (mas) 0.072±0.015Ref Reddening E(B-V) (mag) 0.05±0.0Ref, Note
Declination (°) -21.1319Ref Distance (kpc) 10.38Ref, Note, 10.20Ref, Note    
Galactic longitude (°) 22.6528Ref Proper motion in α (mas/yr) 7.91±0.02Ref    
Galactic latitude (°) -29.0979Ref Proper motion in δ (mas/yr) -3.73±0.01Ref    

Observations

X-Ray - IR type SRef Radio -
X-Ray type - J (mag) 10.00Ref Flickering -
GALEX FUV (mag) 16.27Ref H (mag) 9.23Ref Outbursts -
GALEX NUV (mag) 16.16Ref K (mag) 9.05Ref Outburst type -
IUE NoRef WISE W1 (mag) 8.85Ref Jets -
FUSE NoRef WISE W2 (mag) 8.88Ref Resolved nebula -
U (mag) - WISE W3 (mag) 8.84Ref IPmax (eV) 54.4Ref
B (mag) 13.87Ref WISE W4 (mag) 8.45Ref [O III] lines NoRef
V (mag) 12.55Ref IRAS 12μm (Jy) - He II lines YesRef
R (mag) - IRAS 25μm (Jy) - [Fe VII] lines NoRef
I (mag) - IRAS 60μm (Jy) - O VI lines NoRef
BP (mag) 12.72Ref IRAS 100μm (Jy) -
G (mag) 11.97Ref AKARI S09 (Jy) -
RP (mag) 11.12Ref AKARI S18 (Jy) -

Orbit

Orbital period (days) 246.64±1.43Ref γ velocity (km/h) -22.32±2.36Ref Size of giant’s orbit (AU) -
Eccentricity 0.07±0.07Ref RV of giant (km/h) - Separation (AU) -
Inclination (°) - Inferior conj. of giant (JD) - Mass function -
Eclipses -     Mass ratio -
Orbital ephemeris -        

Cool component

Spectral type K3Ref Mass (M) - Pulsation YesRef
Eff. temperature (K) 4200Ref Radius (R) - Type SRRef
IR type SRef Luminosity (L) - Pulsation period (days) 120.9Ref
Metallicity [Fe/H] -1.29Ref     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) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

 


References


Last updated: January 13, 2024