V919 Sgr

CONFIRMED MILKY WAY

Constellation
Sagittarius

Equatorial coordinates
α = 19 03 45.113
δ = -16 59 55.487

Galactic coordinates
l = 19.0066°
b = -10.3124°

Suspected	1973^Ref
Confirmed	1978^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	Yes^Ref - Z And^Ref

Identifiers

V919 Sgr	IRAS -	GSC2.4.2 SA9P000321	AAVSO 000-BCX-030
SIMBAD EM* AS 337	Pan-STARRS 87602859379632089	SAO -	VSX 28619
GAIA DR3 4088367038239816704	SkyMapper 190345.11-165955.3	WRAY -	GCVS V0919 Sgr
2MASS J19034511-1659553	HIP -	Hen -	BD -
WISE J190345.11-165955.3	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	V919 Sgr (Conf.)	Belzcyński et al. (2001)	V919 Sgr (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	V919 Sgr (Conf.)	Akras et al. (2019)	V919 Sgr (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	V919 Sgr (Conf.)

Position

Right ascension (°)	285.9380^Ref	Parallax (mas)	0.215±0.033^Ref	Reddening E(B-V) (mag)	0.21±0.01^Ref ^{, Note}
Declination (°)	-16.9987^Ref	Distance (kpc)	2.1^Ref, 2.4±1.2^Ref 4.46^Ref ^{, Note}, 4.14^Ref ^{, Note}
Galactic longitude (°)	19.0066^Ref	Proper motion in α (mas/yr)	-3.54±0.03^Ref
Galactic latitude (°)	-10.3124^Ref	Proper motion in δ (mas/yr)	-6.97±0.03^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	No^Ref
X-Ray type	-	J (mag)	8.39^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	7.39^Ref	Outbursts	Yes^Ref
GALEX NUV (mag)	-	K (mag)	7.05^Ref	Outburst type	Z And^Ref
IUE	No^Ref	WISE W1 (mag)	6.85^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	6.81^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	6.42^Ref	IPmax (eV)	54.4^Ref
B (mag)	12.91^Ref	WISE W4 (mag)	5.80^Ref	[O III] lines	Yes^Ref
V (mag)	12.23^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	12.53^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	No^Ref
BP (mag)	12.98^Ref	IRAS 100μm (Jy)	-
G (mag)	11.56^Ref	AKARI S09 (Jy)	-
RP (mag)	10.34^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	-36.71±1.59^Ref	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	M1 III^Ref, M3 III^Ref, M4.5 III^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	3400^Ref	Radius (R_⊙)	-	Type	SR^Ref
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	125±2^Ref
Metallicity [Fe/H]	-0.37±0.07^Ref			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

SIMBAD CDS Portal ARAS Database

Notes

References

Allen, D. A., 1978, MNRAS, 184, 601, 1978MNRAS.184..601A
Allen, D. A., 1980, MNRAS, 192, 521, 1980MNRAS.192..521A
Gałan, C., Mikołajewska, J., Hinkle, K. H. et al., 2017, MNRAS, 466, 2, 2194, 2017MNRAS.466.2194G
Gromadzki, M., Mikołajewska, J., Soszyński, I., 2013, AcA, 63, 4, 405, 2013AcA....63..405G
Ivison, R. J., Bang, M. K., Comeron, F. et al., 1991, IAUC, 5317, 3, 1991IAUC.5317....3I
Ivison, R. J., Munari, U., Marang, F., 1993, A&A, 277, 510, 1993A&A...277..510I
Munari, U., Siviero, A., Navasardyan, H. et al., 2007, CBET, 999, 1, 2007CBET..999....1M
Mürset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M
Sanduleak, N., Stephenson, C. B., 1973, ApJ, 185, 899, 1973ApJ...185..899S

Last updated: April 18, 2022