New Online Database of Symbiotic Variables: IRAS 20011+3356

Constellation
Cygnus

Equatorial coordinates
α = 20 03 01.756
δ = +34 05 06.802

Galactic coordinates
l = 70.8904°
b = 1.6630°

Suspected	2016^Ref
Confirmed	-
Symbiotic IR type	S?^Ref
Hot component type	-
Outbursts	-

Identifiers

IRAS 20011+3356	IRAS 20011+3356	GSC2.4.2 N2FT099408	AAVSO -
SIMBAD IRAS 20011+3356	Pan-STARRS 148903007573542944	SAO -	VSX 140009
GAIA DR3 2058470592556925824	SkyMapper -	WRAY -	GCVS -
2MASS J20030175+3405069	HIP -	Hen -	BD -
WISE J200301.74+340506.8	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 (°)	300.7573^Ref	Parallax (mas)	0.378±0.046^Ref	Reddening E(B-V) (mag)	1.95±0.08^Ref ^{, Note}
Declination (°)	34.0852^Ref	Distance (kpc)	2.57^Ref ^{, Note}, 2.29^Ref ^{, Note}
Galactic longitude (°)	70.8904^Ref	Proper motion in α (mas/yr)	-2.76±0.05^Ref
Galactic latitude (°)	1.6630^Ref	Proper motion in δ (mas/yr)	-7.68±0.05^Ref

Observations

X-Ray	No^Ref	IR type	S?^Ref	Radio	-
X-Ray type	-	J (mag)	6.72^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	5.62^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	5.13^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	4.93^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	4.87^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	4.63^Ref	IPmax (eV)	-
B (mag)	-	WISE W4 (mag)	4.17^Ref	[O III] lines	-
V (mag)	-	IRAS 12μm (Jy)	0.49^Ref	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	0.27^Ref	[Fe VII] lines	-
I (mag)	9.71^Ref	IRAS 60μm (Jy)	5.67^Ref	O VI lines	-
BP (mag)	14.68^Ref	IRAS 100μm (Jy)	71.20^Ref
G (mag)	11.34^Ref	AKARI S09 (Jy)	0.73^Ref
RP (mag)	9.83^Ref	AKARI S18 (Jy)	0.25^Ref

Orbit

Orbital period (days)	-	γ velocity (km/h)	-0.50±0.41^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	-	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	SR^Ref
IR type	S?^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	65.9861292^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 symbiotic star candidate in the HASH Database of PNe (Parker et al., 2016), this star is also identified as a long-period variable (Hartman et al., 2004).

References

Hartman, J. D., Bakos, G., Stanek, K. Z. et al., 2004, AJ, 128, 4, 1761, 2004AJ....128.1761H
Parker, Q. A., Bojičić, I. S., Frew, D. J., 2016, JPhCS, 728, 3, 032008, 2016JPhCS.728c2008P

IRAS 20011+3356