SkySy 1-8

CONFIRMED MILKY WAY

Constellation
Corona Australis

Equatorial coordinates
α = 18 02 26.266
δ = -41 35 54.624

Galactic coordinates
l = 350.7069°
b = -9.2949°

Suspected	2021^Ref
Confirmed	2021^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

SkySy 1-8	IRAS -	GSC2.4.2 S9OP000718	AAVSO -
SIMBAD -	Pan-STARRS -	SAO -	VSX 108721
GAIA DR3 6725393223319286016	SkyMapper 180226.26-413554.5	WRAY -	GCVS -
2MASS J18022627-4135544	HIP -	Hen -	BD -
WISE J180226.27-413554.5	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 (°)	270.6094^Ref	Parallax (mas)	-0.080±0.058^Ref	Reddening E(B-V) (mag)	0.13±0.01^Ref ^{, Note}
Declination (°)	-41.5985^Ref	Distance (kpc)	10.69^Ref ^{, Note}, 8.50^Ref ^{, Note}
Galactic longitude (°)	350.7069^Ref	Proper motion in α (mas/yr)	-2.44±0.06^Ref
Galactic latitude (°)	-9.2949^Ref	Proper motion in δ (mas/yr)	-6.36±0.05^Ref

Observations

X-Ray	-	IR type	S^Ref	Radio	-
X-Ray type	-	J (mag)	9.49^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	8.52^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	8.05^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	7.79^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	7.64^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	5.28^Ref	IPmax (eV)	114^Ref
B (mag)	-	WISE W4 (mag)	4.63^Ref	[O III] lines	Yes^Ref
V (mag)	-	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	Yes^Ref
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	Yes^Ref
BP (mag)	13.86^Ref	IRAS 100μm (Jy)	-
G (mag)	13.09^Ref	AKARI S09 (Jy)	-
RP (mag)	11.97^Ref	AKARI S18 (Jy)	0.21^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	M6 III^Ref	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	shell-burning^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

Notes

A period of 349.1 days was reported for this source in VSX (Watson et al., 2006).

References

Lucy, A. B., 2021, PhDT, 1, 2021PhDT........17L
Merc, J., Beck, P. G., Mathur, S. et al., 2023, arXiv, arXiv:2312.16126, 2023arXiv231216126M
Watson, C. L., Henden, A. A., Price, A., 2006, SASS, 25, 47, 2006SASS...25...47W

Last updated: January 13, 2024