XMMU J172013.3+575051

POSSIBLE DRACO DWARF

Constellation
Draco

Equatorial coordinates
α = 17 20 13.387
δ = +57 50 51.679

Galactic coordinates
l = 86.2856°
b = 34.7236°

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

Identifiers

XMMU J172013.3+575051	IRAS -	GSC2.4.2 N4IT002983	AAVSO -
SIMBAD [BS61] 522	Pan-STARRS 177412600557047938	SAO -	VSX -
GAIA DR3 1433154621589898880	SkyMapper -	WRAY -	GCVS -
2MASS J17201332+5750514	HIP -	Hen -	BD -
WISE J172013.37+575051.6	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 (°)	260.0558^Ref	Parallax (mas)	0.023±0.079^Ref	Reddening E(B-V) (mag)	0.02±0.0^Ref ^{, Note}
Declination (°)	57.8477^Ref	Distance (kpc)	80±10^Ref 6.04^Ref ^{, Note}, 8.97^Ref ^{, Note}
Galactic longitude (°)	86.2856^Ref	Proper motion in α (mas/yr)	0.08±0.10^Ref
Galactic latitude (°)	34.7236^Ref	Proper motion in δ (mas/yr)	0.03±0.11^Ref

Observations

X-Ray	Yes^Ref	IR type	S?^Ref	Radio	-
X-Ray type	β^Ref	J (mag)	16.31^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	15.68^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	15.42^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	15.33^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	15.47^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	12.50^Ref	IPmax (eV)	-
B (mag)	19.13^Ref	WISE W4 (mag)	9.09^Ref	[O III] lines	-
V (mag)	18.18^Ref	IRAS 12μm (Jy)	-	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	-
I (mag)	16.94^Ref	IRAS 60μm (Jy)	-	O VI lines	-
BP (mag)	18.37^Ref	IRAS 100μm (Jy)	-
G (mag)	17.77^Ref	AKARI S09 (Jy)	-
RP (mag)	17.03^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	-283.24^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	-
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	-
IR type	S?^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

This X-ray source was identified as a symbiotic binary by Saeedi et al. (2019).

References

Saeedi, S., Sasaki, M., Stelzer, B. et al., 2019, A&A, 627, A128, 2019A&A...627A.128S

Last updated: June 11, 2019