[LDB2002] 228

POSSIBLE NGC 6822

Constellation
Sagittarius

Equatorial coordinates
α = 19 44 44.665
δ = -14 46 43.414

Galactic coordinates
l = 25.3406°
b = -18.3411°

Suspected	2015^Ref
Confirmed	-
Symbiotic IR type	S?^Ref
Hot component type	-
Outbursts	-

Identifiers

[LDB2002] 228	IRAS -	GSC2.4.2 SA0E057937	AAVSO -
SIMBAD [LDB2002] 228	Pan-STARRS 90262961861365859	SAO -	VSX -
GAIA DR3 4182452076402356096	SkyMapper -	WRAY -	GCVS -
2MASS -	HIP -	Hen -	BD -
WISE J194444.64-144644.1	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 (°)	296.1861^Ref	Parallax (mas)	-0.307±0.665^Ref	Reddening E(B-V) (mag)	0.2±0.01^Ref ^{, Note}
Declination (°)	-14.7787^Ref	Distance (kpc)	500±10^Ref 4.61^Ref ^{, Note}, 1.74^Ref ^{, Note}
Galactic longitude (°)	25.3406^Ref	Proper motion in α (mas/yr)	-1.14±0.90^Ref
Galactic latitude (°)	-18.3411^Ref	Proper motion in δ (mas/yr)	-0.44±0.78^Ref

Observations

X-Ray	No^Ref	IR type	S?^Ref	Radio	-
X-Ray type	-	J (mag)	16.72^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	15.90^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	15.54^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	14.90^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	15.04^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	12.20^Ref	IPmax (eV)	35.1^Ref
B (mag)	-	WISE W4 (mag)	8.34^Ref	[O III] lines	Yes^Ref
V (mag)	-	IRAS 12μm (Jy)	-	He II lines	-
R (mag)	20.07^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	18.74^Ref	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	21.35^Ref	IRAS 100μm (Jy)	-
G (mag)	20.13^Ref	AKARI S09 (Jy)	-
RP (mag)	19.05^Ref	AKARI S18 (Jy)	-

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	C^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	-	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

Suggested as a potential symbiotic star due to its spectra by Sibbons et al. (2015).

References

Sibbons, L. F., Ryan, S. G., Napiwotzki, R. et al., 2015, A&A, 574, A102, 2015A&A...574A.102S

Last updated: May 13, 2019