Hen 3-1674

CONFIRMED MILKY WAY

Constellation
Sagittarius

Equatorial coordinates
α = 18 20 19.045
δ = -26 22 46.313

Galactic coordinates
l = 6.0105°
b = -5.4321°

Suspected	1969^Ref
Confirmed	1978^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

Hen 3-1674	IRAS -	GSC2.4.2 S9TQ839110	AAVSO 000-BKR-731
SIMBAD WRAY 15-1864	Pan-STARRS 76342750792624957	SAO -	VSX 62832
GAIA DR3 4052967471085731584	SkyMapper -	WRAY 15-1864	GCVS -
2MASS J18201905-2622464	HIP -	Hen 3-1674	BD -
WISE J182019.05-262246.3	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	Hen 1674 (Conf.)	Belzcyński et al. (2001)	Hen 3-1674 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	Hen 1674 (Conf.)	Akras et al. (2019)	Hen 3-1674 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	T-21 (Conf.)

Position

Right ascension (°)	275.0794^Ref	Parallax (mas)	0.069±0.062^Ref	Reddening E(B-V) (mag)	0.51±0.03^Ref ^{, Note}
Declination (°)	-26.3795^Ref	Distance (kpc)	8^Ref 6.50^Ref ^{, Note}, 6.92^Ref ^{, Note}
Galactic longitude (°)	6.0105^Ref	Proper motion in α (mas/yr)	-2.44±0.07^Ref
Galactic latitude (°)	-5.4321^Ref	Proper motion in δ (mas/yr)	-5.53±0.05^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	Yes^Ref
X-Ray type	-	J (mag)	8.97^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	7.90^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	7.44^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	7.26^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	7.46^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	7.04^Ref	IPmax (eV)	114^Ref
B (mag)	12.50^Ref	WISE W4 (mag)	6.86^Ref	[O III] lines	Yes^Ref
V (mag)	14.50^Ref	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	Yes^Ref
BP (mag)	16.16^Ref	IRAS 100μm (Jy)	-
G (mag)	13.79^Ref	AKARI S09 (Jy)	-
RP (mag)	12.29^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	1004±20^Ref	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	Yes^Ref			Mass ratio	-
Orbital ephemeris	Min (BR) = 2449178 + 1004±20 x E^Ref

Cool component

Spectral type	M5 III^Ref, M5 III^Ref	Mass (M_⊙)	-	Pulsation	-
Eff. temperature (K)	3430^Ref	Radius (R_⊙)	-	Type	-
IR type	S^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

In Herbig (1969), a G or K-type continuum and emission lines of [O III], Hβ, and He II were reported.

References

Allen, D. A., 1978, MNRAS, 184, 601, 1978MNRAS.184..601A
Allen, D. A., 1980, MNRAS, 192, 521, 1980MNRAS.192..521A
Allen, D. A., 1984, PASA, 5, 3, 369, 1984PASA....5..369A
Gromadzki, M., Mikołajewska, J., Soszyński, I., 2013, AcA, 63, 4, 405, 2013AcA....63..405G
Herbig, G. H., 1969, PNAS, 63, 4, 1045, 1969PNAS...63.1045H
Medina Tanco, G. A., Steiner, J. E., 1995, AJ, 109, 1770, 1995AJ....109.1770M
Sanduleak, N., Stephenson, C. B., 1973, ApJ, 185, 899, 1973ApJ...185..899S

Last updated: April 18, 2022