[LDB2002] 769

POSSIBLE NGC 6822

Constellation
Sagittarius

Equatorial coordinates
α = 19 45 14.620
δ = -14 44 11.409

Galactic coordinates
l = 25.4332°
b = -18.4339°

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

Identifiers

[LDB2002] 769	IRAS -	GSC2.4.2 SA0E073388	AAVSO -
SIMBAD [LDB2002] 769	Pan-STARRS 90312963109466582	SAO -	VSX -
GAIA DR3 4182473035846233472	SkyMapper -	WRAY -	GCVS -
2MASS -	HIP -	Hen -	BD -
WISE J194514.66-144411.6	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 (°)	296.3109^Ref	Parallax (mas)	0.354±1.386^Ref	Reddening E(B-V) (mag)	0.18±0.01^Ref ^{, Note}
Declination (°)	-14.7365^Ref	Distance (kpc)	500±10^Ref 3.82^Ref ^{, Note}, 1.38^Ref ^{, Note}
Galactic longitude (°)	25.4332^Ref	Proper motion in α (mas/yr)	0.75±1.85^Ref
Galactic latitude (°)	-18.4339^Ref	Proper motion in δ (mas/yr)	-1.63±1.80^Ref

Observations

X-Ray	No^Ref	IR type	S?^Ref	Radio	-
X-Ray type	-	J (mag)	17.18^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	16.31^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	15.91^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	15.56^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	15.82^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	12.32^Ref	IPmax (eV)	35.1^Ref
B (mag)	-	WISE W4 (mag)	8.25^Ref	[O III] lines	Yes^Ref
V (mag)	-	IRAS 12μm (Jy)	-	He II lines	-
R (mag)	20.21^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	18.99^Ref	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	21.90^Ref	IRAS 100μm (Jy)	-
G (mag)	20.58^Ref	AKARI S09 (Jy)	-
RP (mag)	19.29^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