K 3-12

CONFIRMED MILKY WAY
 
Constellation
Serpens
Equatorial coordinates
α = 18 44 46.079
δ = +06 07 03.500
Galactic coordinates
l = 37.6285°
b = 4.2636°

Suspected 1990Ref
Confirmed 2010Ref
Symbiotic IR type SRef
Hot component type shell-burningRef
Outbursts -

Identifiers

K 3-12 IRAS - GSC2.4.2 N1QG018934 AAVSO 000-BLH-237
SIMBAD IPHAS J184446.08+060703.5 Pan-STARRS 115342811919991678 SAO - VSX 238533
GAIA DR3 4285602484899363456 SkyMapper - WRAY - GCVS -
2MASS J18444608+0607035 HIP - Hen - BD -
WISE J184446.08+060703.5 TYC - ESO - HD -

Symbiotic Catalogs

Bidelman (1954) - Allen (1984) - Belzcyński et al. (2001) -
Gaposchkin (1957) - Kenyon (1986) - Akras et al. (2019) IPHASJ184446.08+060703.5 (Conf.)
Boyarchuk (1969) - Vaidis (1988, 1991) -

Position

Right ascension (°) 281.1920Ref Parallax (mas) 0.009±0.034Ref Reddening E(B-V) (mag) 1.0±0.03Ref, Note
Declination (°) 6.1176Ref Distance (kpc) 3.6Ref
10.32Ref, Note, 8.56Ref, Note
   
Galactic longitude (°) 37.6285Ref Proper motion in α (mas/yr) -1.87±0.03Ref    
Galactic latitude (°) 4.2636Ref Proper motion in δ (mas/yr) -3.83±0.03Ref    

Observations

X-Ray NoRef IR type SRef Radio -
X-Ray type - J (mag) 11.04Ref Flickering -
GALEX FUV (mag) - H (mag) 9.88Ref Outbursts -
GALEX NUV (mag) - K (mag) 9.41Ref Outburst type -
IUE NoRef WISE W1 (mag) 9.00Ref Jets -
FUSE NoRef WISE W2 (mag) 8.99Ref Resolved nebula -
U (mag) - WISE W3 (mag) 8.46Ref IPmax (eV) 114Ref
B (mag) - WISE W4 (mag) 7.88Ref [O III] lines NoRef
V (mag) - IRAS 12μm (Jy) - He II lines YesRef
R (mag) - IRAS 25μm (Jy) - [Fe VII] lines YesRef
I (mag) - IRAS 60μm (Jy) - O VI lines YesRef
BP (mag) 16.45Ref IRAS 100μm (Jy) -
G (mag) 14.72Ref AKARI S09 (Jy) -
RP (mag) 13.45Ref AKARI S18 (Jy) -

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 -
Eclipses -     Mass ratio -
Orbital ephemeris -        

Cool component

Spectral type M2.0Ref 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) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

Listed in the catalogue of planetary nebulae, it was suspected to be a symbiotic star according to Acker & Stenholm (1990). New observations confirmed its symbiotic nature, as revealed by the emission line spectrum combined with strong 6825 and 7082 Raman-scattered lines and, albeit shallow, TiO bands, as reported in Corradi et al. (2010).


References


Last updated: May 20, 2020