New Online Database of Symbiotic Variables: IRAS 19558+3333

Constellation
Cygnus

Equatorial coordinates
α = 19 57 48.449
δ = +33 41 21.250

Galactic coordinates
l = 69.9830°
b = 2.3764°

Suspected	1994^Ref
Confirmed	-
Symbiotic IR type	D?^Ref
Hot component type	shell-burning?^Ref
Outbursts	-

Identifiers

IRAS 19558+3333	IRAS 19558+3333	GSC2.4.2 N2FV307661	AAVSO 000-BJT-868
SIMBAD IRAS 19558+3333	Pan-STARRS -	SAO -	VSX 241109
GAIA DR3 -	SkyMapper -	WRAY -	GCVS -
2MASS J19574844+3341212	HIP -	Hen -	BD -
WISE J195748.44+334121.3	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	IRAS 19558+3333 (Susp.)
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	IRAS 19558+3333 (Susp.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	299.4519^Ref	Parallax (mas)	-	Reddening E(B-V) (mag)	0.69±0.01^Ref ^{, Note}
Declination (°)	33.6892^Ref	Distance (kpc)	-^{, Note}
Galactic longitude (°)	69.9830^Ref	Proper motion in α (mas/yr)	-
Galactic latitude (°)	2.3764^Ref	Proper motion in δ (mas/yr)	-

Observations

X-Ray	-	IR type	D?^Ref	Radio	Yes^Ref
X-Ray type	-	J (mag)	17.90^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	15.51^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	11.62^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	6.50^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	3.41^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	0.06^Ref	IPmax (eV)	-
B (mag)	-	WISE W4 (mag)	-1.32^Ref	[O III] lines	-
V (mag)	-	IRAS 12μm (Jy)	42.90^Ref	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	46.00^Ref	[Fe VII] lines	-
I (mag)	-	IRAS 60μm (Jy)	12.50^Ref	O VI lines	-
BP (mag)	-	IRAS 100μm (Jy)	38.40^Ref
G (mag)	-	AKARI S09 (Jy)	31.09^Ref
RP (mag)	-	AKARI S18 (Jy)	26.87^Ref

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	-	Mass (M_⊙)	-	Pulsation	-
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	-
IR type	D?^Ref	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-burning?^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

First identified as a potential symbiotic star in Seaquist & Ivison (1994). Later classified as an extreme D-type symbiotic system, with the presence of radio continuum emission suggesting the existence of a hot companion (Belczyński et al., 2000).

References

Belczyński, K., Mikołajewska, J., Munari, U. et al., 2000, A&AS, 146, 407, 2000A&AS..146..407B
Seaquist, E. R., Ivison, R. J., 1994, MNRAS, 269, 512, 1994MNRAS.269..512S

IRAS 19558+3333