AS 327

CONFIRMED MILKY WAY

Constellation
Sagittarius

Equatorial coordinates
α = 18 53 16.658
δ = -24 22 58.845

Galactic coordinates
l = 11.1428°
b = -11.2303°

Suspected	1967^Ref
Confirmed	1969^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

AS 327	IRAS -	GSC2.4.2 S9QO000384	AAVSO 000-BDB-940
SIMBAD EM* AS 327	Pan-STARRS 78742833193640683	SAO -	VSX 239259
GAIA DR3 4074885853134071936	SkyMapper 185316.65-242258.7	WRAY 16-421	GCVS -
2MASS J18531666-2422588	HIP -	Hen 3-1730	BD -
WISE J185316.65-242258.7	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	AS 327 (Conf.)	Belzcyński et al. (2001)	AS 327 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	AS 327 (Conf.)	Akras et al. (2019)	AS 327 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	MHA 208-67 (Conf.)

Position

Right ascension (°)	283.3194^Ref	Parallax (mas)	0.149±0.023^Ref	Reddening E(B-V) (mag)	0.41±0.01^Ref ^{, Note}
Declination (°)	-24.3830^Ref	Distance (kpc)	3^Ref 5.88^Ref ^{, Note}, 5.47^Ref ^{, Note}
Galactic longitude (°)	11.1428^Ref	Proper motion in α (mas/yr)	-4.21±0.03^Ref
Galactic latitude (°)	-11.2303^Ref	Proper motion in δ (mas/yr)	-2.73±0.02^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	Yes^Ref
X-Ray type	-	J (mag)	8.83^Ref	Flickering	-
GALEX FUV (mag)	17.19^Ref	H (mag)	7.87^Ref	Outbursts	-
GALEX NUV (mag)	16.70^Ref	K (mag)	7.55^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	7.45^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	7.43^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	7.02^Ref	IPmax (eV)	114^Ref
B (mag)	14.74^Ref	WISE W4 (mag)	6.24^Ref	[O III] lines	No^Ref
V (mag)	13.09^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	Yes^Ref
BP (mag)	13.07^Ref	IRAS 100μm (Jy)	-
G (mag)	11.81^Ref	AKARI S09 (Jy)	-
RP (mag)	10.65^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	823±55^Ref	γ velocity (km/h)	8.81±2.70^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	Min (V) = 2451954 + 823±55 x E^Ref

Cool component

Spectral type	M4 III^Ref, M0 III^Ref, M2 III^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	3560^Ref	Radius (R_⊙)	-	Type	SR^Ref
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	83±1^Ref
Metallicity [Fe/H]	-			Pulsation ephemeris	-

Hot component

Type/Spectral type	WD^Ref	Mass (M_⊙)	-	Spin period (min)	-
Shell-burning/Accreting-only	shell-burning^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	2700^Ref
Lower limit (K)	114000^Ref
Upper limit (K)	-

Links

SIMBAD CDS Portal ARAS Database

Notes

Herbig (1969) reported that the object has an early M-type spectrum with bright H and He II lines.

References

Gromadzki, M., Mikołajewska, J., Soszyński, I., 2013, AcA, 63, 4, 405, 2013AcA....63..405G
Henize, K. G., 1967, ApJS, 14, 125, 1967ApJS...14..125H
Herbig, G. H., 1969, PNAS, 63, 4, 1045, 1969PNAS...63.1045H
Luna, G. J. M., Sokoloski, J. L., Mukai, K. et al., 2013, A&A, 559, A6, 2013A&A...559A...6L
Medina Tanco, G. A., Steiner, J. E., 1995, AJ, 109, 1770, 1995AJ....109.1770M
Mikołajewska, J., Acker, A., Stenholm, B., 1997, A&A, 327, 191, 1997A&A...327..191M
Mürset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M
Swings, J. P., Allen, D. A., 1972, PASP, 84, 500, 523, 1972PASP...84..523S

Last updated: April 18, 2022