New Online Database of Symbiotic Variables: PPA J1818-2310

Constellation
Sagittarius

Equatorial coordinates
α = 18 18 30.706
δ = -23 10 34.536

Galactic coordinates
l = 8.6592°
b = -3.5729°

Suspected	2016^Ref
Confirmed	-
Symbiotic IR type	S?^Ref
Hot component type	-
Outbursts	-

Identifiers

PPA J1818-2310	IRAS -	GSC2.4.2 S9S9064393	AAVSO 000-BKQ-305
SIMBAD 2MASS J18183071-2310344	Pan-STARRS 80182746279828781	SAO -	VSX 285795
GAIA DR3 4089650030921012224	SkyMapper -	WRAY -	GCVS -
2MASS J18183071-2310344	HIP -	Hen -	BD -
WISE J181830.71-231034.4	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 (°)	274.6279^Ref	Parallax (mas)	0.132±0.056^Ref	Reddening E(B-V) (mag)	0.85±0.02^Ref ^{, Note}
Declination (°)	-23.1763^Ref	Distance (kpc)	5.28^Ref ^{, Note}, 5.99^Ref ^{, Note}
Galactic longitude (°)	8.6592^Ref	Proper motion in α (mas/yr)	-5.47±0.06^Ref
Galactic latitude (°)	-3.5729^Ref	Proper motion in δ (mas/yr)	-9.23±0.05^Ref

Observations

X-Ray	-	IR type	S?^Ref	Radio	-
X-Ray type	-	J (mag)	9.72^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	8.75^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	8.13^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	7.48^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	7.11^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	6.44^Ref	IPmax (eV)	14.5^Ref
B (mag)	-	WISE W4 (mag)	5.85^Ref	[O III] lines	No^Ref
V (mag)	-	IRAS 12μm (Jy)	-	He II lines	No^Ref
R (mag)	15.77^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	17.72^Ref	IRAS 100μm (Jy)	-
G (mag)	14.35^Ref	AKARI S09 (Jy)	-
RP (mag)	12.70^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	-	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	Mira^Ref
IR type	S?^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	253^Ref
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

Classified as a symbiotic star candidate in the HASH Database of PNe (Parker et al., 2016), the spectrum exhibits a red continuum, Balmer lines, [N II], and [S II]. Additionally, it is suggested to be a possible long-period variable (Mowlavi et al., 2018).

References

Mowlavi, N., Lecoeur-Taïbi, I., Lebzelter, T. et al., 2018, A&A, 618, A58, 2018A&A...618A..58M
Parker, Q. A., Bojičić, I. S., Frew, D. J., 2016, JPhCS, 728, 3, 032008, 2016JPhCS.728c2008P

PPA J1818-2310