New Online Database of Symbiotic Variables: KW Sco

Constellation
Scorpius

Equatorial coordinates
α = 17 17 28.074
δ = -40 22 56.459

Galactic coordinates
l = 347.2644°
b = -1.4428°

Suspected	1969^Ref
Confirmed	-
Symbiotic IR type	S?^Ref
Hot component type	-
Outbursts	-

Identifiers

KW Sco	IRAS 17139-4019	GSC2.4.2 S8PN010802	AAVSO 000-BFK-551
SIMBAD V* KW Sco	Pan-STARRS -	SAO -	VSX 33072
GAIA DR3 5971946386389919744	SkyMapper 171728.07-402256.3	WRAY -	GCVS KW Sco
2MASS J17172808-4022562	HIP -	Hen -	BD -
WISE J171728.09-402256.6	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 (°)	259.3670^Ref	Parallax (mas)	0.997±0.084^Ref	Reddening E(B-V) (mag)	2.21±0.3^Ref ^{, Note}
Declination (°)	-40.3824^Ref	Distance (kpc)	0.97^Ref ^{, Note}, 0.93^Ref ^{, Note}
Galactic longitude (°)	347.2644^Ref	Proper motion in α (mas/yr)	-3.32±0.11^Ref
Galactic latitude (°)	-1.4428^Ref	Proper motion in δ (mas/yr)	-6.08±0.08^Ref

Observations

X-Ray	No^Ref	IR type	S?^Ref	Radio	-
X-Ray type	-	J (mag)	4.22^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	3.05^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	2.43^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	0.73^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	0.21^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	0.78^Ref	IPmax (eV)	-
B (mag)	-	WISE W4 (mag)	0.25^Ref	[O III] lines	-
V (mag)	-	IRAS 12μm (Jy)	18.90^Ref	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	7.56^Ref	[Fe VII] lines	-
I (mag)	-	IRAS 60μm (Jy)	63.50^Ref	O VI lines	-
BP (mag)	15.71^Ref	IRAS 100μm (Jy)	307.00^Ref
G (mag)	10.71^Ref	AKARI S09 (Jy)	-
RP (mag)	8.96^Ref	AKARI S18 (Jy)	9.88^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	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	Mira^Ref
IR type	S?^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	442.5^Ref
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

Included in the list of suspected symbiotic stars in Boyarchuk (1969). It is also identified as a Mira variable with a period of 442.5 days in the GCVS (Samus´ et al., 2017).

References

Boyarchuk, A. A., 1969, CoKon, 65, 395, 1969CoKon..65..395B
Samus´, N. N., Kazarovets, E. V., Durlevich, O. V. et al., 2017, ARep, 61, 1, 80, 2017ARep...61...80S

KW Sco