New Online Database of Symbiotic Variables: LAMOST J185856.85+502448.6

Constellation
Draco

Equatorial coordinates
α = 18 58 56.862
δ = +50 24 47.943

Galactic coordinates
l = 80.4460°
b = 19.4405°

Suspected	2023^Ref
Confirmed	-
Symbiotic IR type	-
Hot component type	accreting-only^Ref
Outbursts	-

Identifiers

LAMOST J185856.85+502448.6	IRAS 18577+5020	GSC2.4.2 N2EM000080	AAVSO -
SIMBAD IRAS 18577+5020	Pan-STARRS 168492847369356733	SAO -	VSX 139565
GAIA DR3 2132367497717554944	SkyMapper -	WRAY -	GCVS -
2MASS J18585687+5024482	HIP -	Hen -	BD -
WISE J185856.85+502448.0	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 (°)	284.7369^Ref	Parallax (mas)	0.696±0.037^Ref	Reddening E(B-V) (mag)	0.05±0.0^Ref ^{, Note}
Declination (°)	50.4133^Ref	Distance (kpc)	1.39^Ref ^{, Note}, 1.36^Ref ^{, Note}
Galactic longitude (°)	80.4460^Ref	Proper motion in α (mas/yr)	-0.36±0.05^Ref
Galactic latitude (°)	19.4405^Ref	Proper motion in δ (mas/yr)	-13.76±0.05^Ref

Observations

X-Ray	-	IR type	-	Radio	-
X-Ray type	-	J (mag)	5.47^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	4.54^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	4.13^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	4.08^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	3.62^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	3.40^Ref	IPmax (eV)	-
B (mag)	14.42^Ref	WISE W4 (mag)	2.68^Ref	[O III] lines	-
V (mag)	12.77^Ref	IRAS 12μm (Jy)	1.81^Ref	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	0.82^Ref	[Fe VII] lines	-
I (mag)	-	IRAS 60μm (Jy)	0.40^Ref	O VI lines	-
BP (mag)	12.92^Ref	IRAS 100μm (Jy)	1.00^Ref
G (mag)	10.07^Ref	AKARI S09 (Jy)	1.87^Ref
RP (mag)	8.58^Ref	AKARI S18 (Jy)	0.93^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	-	Luminosity (L_⊙)	-	Pulsation period (days)	-
Metallicity [Fe/H]	-			Pulsation ephemeris	-

Hot component

Type/Spectral type	-	Mass (M_⊙)	-	Spin period (min)	-
Shell-burning/Accreting-only	accreting-only^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

Suspected of having a symbiotic nature by Jia et al. (2023) based on the machine-learning search. The spectra from the SDSS survey suggest an accreting-only nature.

References

Jia, Y., Guo, S., Zhu, C. et al., 2023, RAA, 23, 10, 105012, 2023RAA....23j5012J

LAMOST J185856.85+502448.6