K 4-40

SUSPECTED MILKY WAY
 
Constellation
Vulpecula
Equatorial coordinates
α = 19 54 15.097
δ = +24 57 51.648
Galactic coordinates
l = 62.1196°
b = -1.4857°

Suspected 1974Ref
Confirmed -
Symbiotic IR type -
Hot component type -
Outbursts -

Identifiers

K 4-40 IRAS 19521+2449 GSC2.4.2 N32B304827 AAVSO -
SIMBAD IRAS 19521+2449 Pan-STARRS 137952985630248188 SAO - VSX 70927
GAIA DR3 1834501620153695616 SkyMapper - WRAY - GCVS -
2MASS J19541509+2457517 HIP - Hen - BD -
WISE - TYC - ESO - HD -

Symbiotic Catalogs

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

Position

Right ascension (°) 298.5629Ref Parallax (mas) 0.208±0.105Ref Reddening E(B-V) (mag) 2.11±0.12Ref, Note
Declination (°) 24.9643Ref Distance (kpc) 4.55Ref, Note, 2.84Ref, Note    
Galactic longitude (°) 62.1196Ref Proper motion in α (mas/yr) 1.86±0.07Ref    
Galactic latitude (°) -1.4857Ref Proper motion in δ (mas/yr) 1.61±0.10Ref    

Observations

X-Ray - IR type - Radio -
X-Ray type - J (mag) 6.56Ref Flickering -
GALEX FUV (mag) - H (mag) 5.34Ref Outbursts -
GALEX NUV (mag) - K (mag) 4.57Ref Outburst type -
IUE NoRef WISE W1 (mag) - Jets -
FUSE NoRef WISE W2 (mag) - Resolved nebula -
U (mag) - WISE W3 (mag) - IPmax (eV) -
B (mag) - WISE W4 (mag) - [O III] lines -
V (mag) - IRAS 12μm (Jy) 2.86Ref He II lines -
R (mag) - IRAS 25μm (Jy) 1.42Ref [Fe VII] lines -
I (mag) - IRAS 60μm (Jy) 0.73Ref O VI lines -
BP (mag) 16.80Ref IRAS 100μm (Jy) 37.10Ref
G (mag) 12.75Ref AKARI S09 (Jy) 3.40Ref
RP (mag) 10.99Ref AKARI S18 (Jy) 1.69Ref

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 M5-7Ref Mass (M) - Pulsation YesRef
Eff. temperature (K) - Radius (R) - Type MiraRef
IR type - Luminosity (L) - Pulsation period (days) 293.6266601Ref
Metallicity [Fe/H] -     Pulsation ephemeris -

Hot component

Type/Spectral type - Mass (M) - Spin period (min) -
Shell-burning/Accreting-only - Radius (R) - Accretion disk -
Eff. temperature (K) - Luminosity (L) -    
Lower limit (K) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

Classified as a symbiotic star candidate in the HASH Database of PNe (Parker et al., 2016), likely based on the study of Allen (1974). Additionally, it has been identified as a Mira variable (Woźniak et al., 2004).


References


Last updated: March 25, 2022