VPHASDR2J183910.8-085644.4

SUSPECTED MILKY WAY

Constellation
Scutum

Equatorial coordinates
α = 18 39 10.760
δ = -08 56 44.360

Galactic coordinates
l = 23.5788°
b = -1.3696°

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

Identifiers

VPHASDR2J183910.8-085644.4	IRAS 18364-0859	GSC2.4.2 S9N3053631	AAVSO -
SIMBAD IRAS 18364-0859	Pan-STARRS 97262797947905581	SAO -	VSX -
GAIA DR3 4155662475643323776	SkyMapper 183910.75-085644.2	WRAY -	GCVS -
2MASS J18391074-0856446	HIP -	Hen -	BD -
WISE J183910.75-085644.2	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 (°)	279.7948^Ref	Parallax (mas)	0.398±0.152^Ref	Reddening E(B-V) (mag)	3.3±0.17^Ref ^{, Note}
Declination (°)	-8.9457^Ref	Distance (kpc)	3.83^Ref ^{, Note}, 2.82^Ref ^{, Note}
Galactic longitude (°)	23.5788^Ref	Proper motion in α (mas/yr)	-1.20±0.13^Ref
Galactic latitude (°)	-1.3696^Ref	Proper motion in δ (mas/yr)	-5.27±0.11^Ref

Observations

X-Ray	-	IR type	D?^Ref	Radio	-
X-Ray type	-	J (mag)	12.69^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	10.84^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	9.08^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	6.93^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	5.82^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	4.14^Ref	IPmax (eV)	-
B (mag)	-	WISE W4 (mag)	2.65^Ref	[O III] lines	-
V (mag)	-	IRAS 12μm (Jy)	0.78^Ref	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	0.80^Ref	[Fe VII] lines	-
I (mag)	-	IRAS 60μm (Jy)	21.00^Ref	O VI lines	-
BP (mag)	19.24^Ref	IRAS 100μm (Jy)	300.00^Ref
G (mag)	17.14^Ref	AKARI S09 (Jy)	0.84^Ref
RP (mag)	15.65^Ref	AKARI S18 (Jy)	0.69^Ref

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

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

Last updated: May 3, 2022