ASAS J182647-2415.8

POSSIBLE MILKY WAY

Constellation
Sagittarius

Equatorial coordinates
α = 18 26 46.857
δ = -24 15 47.235

Galactic coordinates
l = 8.5739°
b = -5.7537°

Suspected	2020^Ref
Confirmed	-
Symbiotic IR type	S?^Ref
Hot component type	accreting-only?^Ref
Outbursts	-

Identifiers

ASAS J182647-2415.8	IRAS 18237-2417	GSC2.4.2 S9T0000679	AAVSO 000-BNN-736
SIMBAD IRAS 18237-2417	Pan-STARRS 78882766953464669	SAO -	VSX 414101
GAIA DR3 4077376285676058496	SkyMapper 182646.86-241547.1	WRAY -	GCVS -
2MASS J18264686-2415473	HIP -	Hen -	BD -
WISE J182646.85-241547.0	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 (°)	276.6952^Ref	Parallax (mas)	0.012±0.086^Ref	Reddening E(B-V) (mag)	0.43±0.01^Ref ^{, Note}
Declination (°)	-24.2631^Ref	Distance (kpc)	6.79^Ref ^{, Note}, 7.47^Ref ^{, Note}
Galactic longitude (°)	8.5739^Ref	Proper motion in α (mas/yr)	-0.26±0.08^Ref
Galactic latitude (°)	-5.7537^Ref	Proper motion in δ (mas/yr)	1.67±0.07^Ref

Observations

X-Ray	-	IR type	S?^Ref	Radio	-
X-Ray type	-	J (mag)	5.94^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	4.94^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	4.40^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	4.22^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	3.88^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	3.42^Ref	IPmax (eV)	13.6^Ref
B (mag)	-	WISE W4 (mag)	2.87^Ref	[O III] lines	No^Ref
V (mag)	12.90^Ref	IRAS 12μm (Jy)	1.48^Ref	He II lines	No^Ref
R (mag)	-	IRAS 25μm (Jy)	0.55^Ref	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	0.45^Ref	O VI lines	No^Ref
BP (mag)	13.74^Ref	IRAS 100μm (Jy)	21.20^Ref
G (mag)	10.56^Ref	AKARI S09 (Jy)	2.01^Ref
RP (mag)	9.06^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	64.92±0.84^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	M6.5 III^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	SR^Ref
IR type	S?^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	105.2^Ref
Metallicity [Fe/H]	-			Pulsation ephemeris	-

Hot component

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

Links

SIMBAD CDS Portal

Notes

Symbiotic candidate selected for AAVSO observing campaing (Waagen, 2020) by Adrian B. Lucy (Columbia University).

References

Waagen, E. O., 2020, AAVSO Alert Notice, 708, 1, 2020AAN...708....1W

Last updated: May 3, 2022