IPHASJ204713.69+463517.5

SUSPECTED MILKY WAY

Constellation
Cygnus

Equatorial coordinates
α = 20 47 13.682
δ = +46 35 17.462

Galactic coordinates
l = 85.9366°
b = 2.0176°

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

Identifiers

IPHASJ204713.69+463517.5	IRAS 20455+4624	GSC2.4.2 N323086718	AAVSO -
SIMBAD EM* UHA 23	Pan-STARRS 163903118070046505	SAO -	VSX 51925
GAIA DR3 2166560763171926656	SkyMapper -	WRAY -	GCVS V3067 Cyg
2MASS J20471368+4635174	HIP -	Hen -	BD -
WISE J204713.68+463517.5	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 (°)	311.8070^Ref	Parallax (mas)	0.081±0.041^Ref	Reddening E(B-V) (mag)	2.03±0.01^Ref ^{, Note}
Declination (°)	46.5882^Ref	Distance (kpc)	6.82^Ref ^{, Note}, 6.38^Ref ^{, Note}
Galactic longitude (°)	85.9366^Ref	Proper motion in α (mas/yr)	-2.29±0.05^Ref
Galactic latitude (°)	2.0176^Ref	Proper motion in δ (mas/yr)	-2.66±0.05^Ref

Observations

X-Ray	-	IR type	D?^Ref	Radio	-
X-Ray type	-	J (mag)	10.05^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	8.93^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	7.48^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	5.57^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	4.16^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	2.11^Ref	IPmax (eV)	-
B (mag)	15.00^Ref	WISE W4 (mag)	0.93^Ref	[O III] lines	-
V (mag)	15.00^Ref	IRAS 12μm (Jy)	5.65^Ref	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	3.98^Ref	[Fe VII] lines	-
I (mag)	-	IRAS 60μm (Jy)	1.32^Ref	O VI lines	-
BP (mag)	16.30^Ref	IRAS 100μm (Jy)	41.90^Ref
G (mag)	14.47^Ref	AKARI S09 (Jy)	4.83^Ref
RP (mag)	13.15^Ref	AKARI S18 (Jy)	3.71^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	K-M^Ref	Mass (M_⊙)	-	Pulsation	Yes?^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	SR?^Ref
IR type	D?^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	259.2658534^Ref
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), this object has also been classified as an emission-line star (Kohoutek & Wehmeyer, 1997), a possible planetary nebula (Viironen et al., 2009), and a long-period variable (Heinze et al., 2018).

References

Akras, S., Leal-Ferreira, M. L., Guzman-Ramirez, L. et al., 2019, MNRAS, 483, 4, 5077, 2019MNRAS.483.5077A
Heinze, A. N., Tonry, J. L., Denneau, L. et al., 2018, AJ, 156, 5, 241, 2018AJ....156..241H
Kohoutek, L., Wehmeyer, R., 1997, Astronomische Abhandlungen der Hamburger Sternwarte, 11, 1, 1997AAHam..11.....K
Viironen, K., Mampaso, A., Corradi, R. L. M. et al., 2009, A&A, 502, 1, 113, 2009A&A...502..113V

Last updated: May 3, 2022