StHA 149

CONFIRMED MILKY WAY

Constellation
Hercules

Equatorial coordinates
α = 18 18 55.871
δ = +27 26 27.678

Galactic coordinates
l = 54.8177°
b = 18.7711°

Suspected	1988^Ref
Confirmed	1988^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

StHA 149	IRAS F18168+2725	GSC2.4.2 N22M000722	AAVSO 000-BJT-870
SIMBAD EM* StHA 149	Pan-STARRS 140922747329139985	SAO -	VSX 138994
GAIA DR3 4586030739960276608	SkyMapper -	WRAY -	GCVS V1528 Her
2MASS J18185587+2726276	HIP -	Hen -	BD -
WISE J181855.87+272627.6	TYC 2101-2277-1	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	StHA 149 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	StHA 149 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	274.7328^Ref	Parallax (mas)	0.200±0.016^Ref	Reddening E(B-V) (mag)	0.1±0.0^Ref ^{, Note}
Declination (°)	27.4410^Ref	Distance (kpc)	4.11^Ref ^{, Note}, 4.04^Ref ^{, Note}
Galactic longitude (°)	54.8177^Ref	Proper motion in α (mas/yr)	-0.34±0.02^Ref
Galactic latitude (°)	18.7711^Ref	Proper motion in δ (mas/yr)	-3.38±0.02^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	-
X-Ray type	-	J (mag)	8.00^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	7.07^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	6.82^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	6.67^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	6.65^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	6.28^Ref	IPmax (eV)	54.4^Ref
B (mag)	13.50^Ref	WISE W4 (mag)	5.60^Ref	[O III] lines	No^Ref
V (mag)	11.94^Ref	IRAS 12μm (Jy)	0.11^Ref	He II lines	Yes^Ref
R (mag)	11.44^Ref	IRAS 25μm (Jy)	0.09^Ref	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	0.21^Ref	O VI lines	No^Ref
BP (mag)	12.19^Ref	IRAS 100μm (Jy)	1.40^Ref
G (mag)	10.86^Ref	AKARI S09 (Jy)	0.13^Ref
RP (mag)	9.71^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	-13.38±0.87^Ref	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	M3.6 II^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	SR^Ref
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	64±2^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

References

Downes, R. A., Keyes, C. D., 1988, AJ, 96, 777, 1988AJ.....96..777D
Keyes, C. D., Preblich, B., 2004, AJ, 128, 6, 2981, 2004AJ....128.2981K
Merc, J., Beck, P. G., Mathur, S. et al., 2023, arXiv, arXiv:2312.16126, 2023arXiv231216126M

Last updated: January 13, 2024