V1016 Cyg

Constellation
Cygnus

Equatorial coordinates
α = 19 57 05.013
δ = +39 49 35.993

Galactic coordinates
l = 75.1726°
b = 5.6777°

Suspected	1966^Ref
Confirmed	1975^Ref
Symbiotic IR type	D^Ref
Hot component type	shell-burning^Ref
Outbursts	Yes^Ref - SyN^Ref

Identifiers

V1016 Cyg	IRAS 19553+3941	GSC2.4.2 N2IQ000810	AAVSO 000-BCJ-813
SIMBAD EM* AS 373	Pan-STARRS 155792992712182552	SAO -	VSX 11936
GAIA DR3 2072769054079863040	SkyMapper -	WRAY -	GCVS V1016 Cyg
2MASS J19570502+3949363	HIP -	Hen -	BD -
WISE J195705.01+394936.0	TYC 3141-533-1	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	V1016 Cyg (Conf.)	Belzcyński et al. (2001)	V1016 Cyg (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	V1016 Cyg (Conf.)	Akras et al. (2019)	V1016 Cyg (Conf.)
Boyarchuk (1969)	MHa 328-116 (Conf.)	Vaidis (1988, 1991)	V1016 Cyg (Conf.)

Position

Right ascension (°)	299.2709^Ref	Parallax (mas)	-0.020±0.159^Ref	Reddening E(B-V) (mag)	0.21±0.0^Ref ^{, Note}
Declination (°)	39.8267^Ref	Distance (kpc)	3.6^Ref, 4.6^Ref, 2^Ref, 2.93±0.75^Ref 8.29^Ref ^{, Note}, 4.48^Ref ^{, Note}
Galactic longitude (°)	75.1726^Ref	Proper motion in α (mas/yr)	-2.36±0.17^Ref
Galactic latitude (°)	5.6777^Ref	Proper motion in δ (mas/yr)	-5.22±0.20^Ref

Observations

X-Ray	Yes^Ref	IR type	D^Ref	Radio	Yes^Ref
X-Ray type	β^Ref	J (mag)	7.03^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	5.80^Ref	Outbursts	Yes^Ref
GALEX NUV (mag)	-	K (mag)	4.76^Ref	Outburst type	SyN^Ref
IUE	Yes^Ref	WISE W1 (mag)	3.28^Ref	Jets	Yes?^Ref
FUSE	Yes^Ref	WISE W2 (mag)	0.33^Ref	Resolved nebula	Yes^Ref
U (mag)	-	WISE W3 (mag)	-0.29^Ref	IPmax (eV)	114^Ref, 141.3^Ref
B (mag)	12.21^Ref	WISE W4 (mag)	-1.35^Ref	[O III] lines	Yes^Ref
V (mag)	11.55^Ref	IRAS 12μm (Jy)	42.90^Ref	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	34.20^Ref	[Fe VII] lines	Yes^Ref
I (mag)	10.59^Ref	IRAS 60μm (Jy)	4.03^Ref	O VI lines	Yes^Ref
BP (mag)	11.53^Ref	IRAS 100μm (Jy)	5.78^Ref
G (mag)	11.63^Ref	AKARI S09 (Jy)	34.18^Ref
RP (mag)	11.00^Ref	AKARI S18 (Jy)	28.58^Ref

Orbit

Orbital period (days)	29220±9130^Ref, 198696^Ref	γ velocity (km/h)	-	Size of giant’s orbit (AU)	-
Eccentricity	-	RV of giant (km/h)	-	Separation (AU)	84±2^Ref
Inclination (°)	60±20^Ref	Inferior conj. of giant (JD)	-	Mass function	-
Eclipses	-			Mass ratio	-
Orbital ephemeris	-

Cool component

Spectral type	M6-M8 III^Ref, M6-6.5 III^Ref, M7 III^Ref, M7 III^Ref	Mass (M_⊙)	0.81±0.2^Ref	Pulsation	Yes^Ref
Eff. temperature (K)	2200^Ref	Radius (R_⊙)	485±40^Ref	Type	Mira^Ref
IR type	D^Ref	Luminosity (L_⊙)	7600±100^Ref	Pulsation period (days)	478^Ref, 474±2^Ref
Metallicity [Fe/H]	-			Pulsation ephemeris	Min (K)= 2445038 + 478 x E^Ref, Max (J) = 2444357±10 + 474±2 x E^Ref

Hot component

Type/Spectral type	WD^Ref	Mass (M_⊙)	-	Spin period (min)	-
Shell-burning/Accreting-only	shell-burning^Ref	Radius (R_⊙)	0.06^Ref, 0.28-0.41^Ref	Accretion disk	-
Eff. temperature (K)	160000^Ref, 125000-15000^Ref	Luminosity (L_⊙)	2000^Ref, 33000-37000^Ref
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal ARAS Database

Notes

Nussbaumer & Schmid (1988) and Munari (1988) initially proposed potential orbital periods of 9.5 and 6 years. However, this estimation was later challenged by Schild & Schmid (1996), who suggested a longer orbital period in the range of 80 ± 25 years. Brocksopp et al. (2002), considering the projected separation of the components, proposed an even more extended orbital period, possibly around 544 years. Additionally, Parimucha et al. (2002) contributed to the complexity by reporting the presence of a 15-year periodicity in the light curves.

References

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