New Online Database of Symbiotic Variables: VPHASDR2J180803.5-203454.0

Constellation
Sagittarius

Equatorial coordinates
α = 18 08 03.537
δ = -20 34 54.096

Galactic coordinates
l = 9.7789°
b = -0.2026°

Suspected	2019^Ref
Confirmed	-
Symbiotic IR type	D?^Ref
Hot component type	-
Outbursts	-

Identifiers

VPHASDR2J180803.5-203454.0	IRAS -	GSC2.4.2 S9J5006725	AAVSO -
SIMBAD ISOGAL-P J180803.6-203454	Pan-STARRS 83302720147642345	SAO -	VSX -
GAIA DR3 4094164763047519104	SkyMapper -	WRAY -	GCVS -
2MASS J18080353-2034540	HIP -	Hen -	BD -
WISE J180803.54-203454.0	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 (°)	272.0147^Ref	Parallax (mas)	0.285±0.027^Ref	Reddening E(B-V) (mag)	14.97±1.79^Ref ^{, Note}
Declination (°)	-20.5817^Ref	Distance (kpc)	2.96^Ref ^{, Note}, 2.89^Ref ^{, Note}
Galactic longitude (°)	9.7789^Ref	Proper motion in α (mas/yr)	0.19±0.03^Ref
Galactic latitude (°)	-0.2026^Ref	Proper motion in δ (mas/yr)	-1.10±0.03^Ref

Observations

X-Ray	No^Ref	IR type	D?^Ref	Radio	-
X-Ray type	-	J (mag)	11.50^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	10.03^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	8.80^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	6.94^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	5.95^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	3.89^Ref	IPmax (eV)	-
B (mag)	-	WISE W4 (mag)	2.43^Ref	[O III] lines	-
V (mag)	-	IRAS 12μm (Jy)	-	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	-
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	-
BP (mag)	16.22^Ref	IRAS 100μm (Jy)	-
G (mag)	14.94^Ref	AKARI S09 (Jy)	0.84^Ref
RP (mag)	13.80^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	-	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

Previously considered an YSO candidate by Felli et al. (2002). It was classified as a possible symbiotic star based on infrared data by Akras et al. (2019).

References

Akras, S., Leal-Ferreira, M. L., Guzman-Ramirez, L. et al., 2019, MNRAS, 483, 4, 5077, 2019MNRAS.483.5077A
Felli, M., Testi, L., Schuller, F. et al., 2002, A&A, 392, 971, 2002A&A...392..971F

VPHASDR2J180803.5-203454.0