Th 4-1

POSSIBLE MILKY WAY

Constellation
Sagittarius

Equatorial coordinates
α = 17 46 20.816
δ = -20 13 48.328

Galactic coordinates
l = 7.5348°
b = 4.3773°

Suspected	2014^Ref
Confirmed	-
Symbiotic IR type	D'?^Ref
Hot component type	shell-burning?^Ref
Outbursts	-

Identifiers

Th 4-1	IRAS -	GSC2.4.2 S8JY045327	AAVSO -
SIMBAD PN Th 4-1	Pan-STARRS 83722665867544237	SAO -	VSX -
GAIA DR3 4118959334445003520	SkyMapper 174620.81-201348.3	WRAY -	GCVS -
2MASS J17462082-2013482	HIP -	Hen 2-282	BD -
WISE J174620.81-201348.4	TYC -	ESO 589-4	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 (°)	266.5867^Ref	Parallax (mas)	0.096±0.047^Ref	Reddening E(B-V) (mag)	0.93±0.04^Ref ^{, Note}
Declination (°)	-20.2301^Ref	Distance (kpc)	6.55^Ref ^{, Note}, 5.82^Ref ^{, Note}
Galactic longitude (°)	7.5348^Ref	Proper motion in α (mas/yr)	-1.86±0.06^Ref
Galactic latitude (°)	4.3773^Ref	Proper motion in δ (mas/yr)	-3.26±0.04^Ref

Observations

X-Ray	-	IR type	D'?^Ref	Radio	No^Ref
X-Ray type	-	J (mag)	14.08^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	12.88^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	11.48^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	8.96^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	7.87^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	5.72^Ref	IPmax (eV)	99^Ref
B (mag)	-	WISE W4 (mag)	3.95^Ref	[O III] lines	Yes^Ref
V (mag)	-	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	Yes?^Ref
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	16.24^Ref	IRAS 100μm (Jy)	-
G (mag)	15.89^Ref	AKARI S09 (Jy)	0.23^Ref
RP (mag)	15.15^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	-	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

A potential symbiotic classification for this star was proposed by García-Hernández & Górny (2014).

References

García-Hernández, D. A., Górny, S. K., 2014, A&A, 567, A12, 2014A&A...567A..12G

Last updated: August 20, 2021