New Online Database of Symbiotic Variables: StHA 169

Constellation
Cygnus

Equatorial coordinates
α = 19 49 57.588
δ = +46 15 20.505

Galactic coordinates
l = 80.1365°
b = 10.0195°

Suspected	1988^Ref
Confirmed	1988^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	Yes^Ref - SyN? + Z And^Ref

Identifiers

StHA 169	IRAS -	GSC2.4.2 N2JC030893	AAVSO 000-BDC-157
SIMBAD EM* StHA 169	Pan-STARRS 163502974899537505	SAO -	VSX 51090
GAIA DR3 2080256655222847744	SkyMapper -	WRAY -	GCVS V2873 Cyg
2MASS J19495759+4615205	HIP -	Hen -	BD -
WISE J194957.58+461520.5	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	StHA 169 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	StHA 169 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	297.4899^Ref	Parallax (mas)	0.049±0.020^Ref	Reddening E(B-V) (mag)	0.15±0.0^Ref ^{, Note}
Declination (°)	46.2557^Ref	Distance (kpc)	8.6^Ref 13.05^Ref ^{, Note}, 12.83^Ref ^{, Note}
Galactic longitude (°)	80.1365^Ref	Proper motion in α (mas/yr)	-2.62±0.03^Ref
Galactic latitude (°)	10.0195^Ref	Proper motion in δ (mas/yr)	-2.31±0.03^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	-
X-Ray type	-	J (mag)	10.10^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	9.17^Ref	Outbursts	Yes^Ref
GALEX NUV (mag)	-	K (mag)	8.93^Ref	Outburst type	SyN? + Z And^Ref
IUE	No^Ref	WISE W1 (mag)	8.83^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	8.90^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	8.59^Ref	IPmax (eV)	114^Ref
B (mag)	15.24^Ref	WISE W4 (mag)	8.47^Ref	[O III] lines	No^Ref
V (mag)	13.56^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	11.41^Ref	IRAS 60μm (Jy)	-	O VI lines	Yes^Ref
BP (mag)	13.45^Ref	IRAS 100μm (Jy)	-
G (mag)	12.49^Ref	AKARI S09 (Jy)	-
RP (mag)	11.45^Ref	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	M2-3^Ref	Mass (M_⊙)	3.4^Ref	Pulsation	Yes^Ref
Eff. temperature (K)	3700^Ref	Radius (R_⊙)	-	Type	SR^Ref
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	34^Ref
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 ARAS Database

Notes

This object experienced an outburst in 2016, as reported in Munari & Graziani (2016). Historical light curve data from Munari et al. (2016) indicates the presence of at least 2-3 other outbursts, maybe also of the symbiotic nova type. It's worth noting that the coordinates provided in Belczyński et al. (2000) for this source were incorrect.

References

Belczyński, K., Mikołajewska, J., Munari, U. et al., 2000, A&AS, 146, 407, 2000A&AS..146..407B
Downes, R. A., Keyes, C. D., 1988, AJ, 96, 777, 1988AJ.....96..777D
Merc, J., Beck, P. G., Mathur, S. et al., 2023, arXiv, arXiv:2312.16126, 2023arXiv231216126M
Munari, U., Graziani, M., Jurdana-Šepić, R., 2016, IBVS, 6176, 1, 2016IBVS.6176....1M
Munari, U., Graziani, M., 2016, ATel, 9036, 1, 2016ATel.9036....1M
Ramsay, G., Hakala, P., Howell, S. B., 2014, MNRAS, 442, 1, 489, 2014MNRAS.442..489R

StHA 169