Bl L

CONFIRMED MILKY WAY

Constellation
Scorpius

Equatorial coordinates
α = 17 53 13.774
δ = -30 18 05.852

Galactic coordinates
l = 359.6788°
b = -2.1204°

Suspected	1979^Ref
Confirmed	1984^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	Yes^Ref - Z And^Ref

Identifiers

Bl L	IRAS -	GSC2.4.2 S8DQ048095	AAVSO 000-BJT-843
SIMBAD PN Bl L	Pan-STARRS 71632683074058378	SAO -	VSX 241059
GAIA DR3 4056183954951010816	SkyMapper 175313.77-301805.7	WRAY -	GCVS -
2MASS J17531378-3018056	HIP -	Hen -	BD -
WISE J175313.75-301805.7	TYC -	ESO 456-6	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	Bl L (Conf.)	Belzcyński et al. (2001)	Bl L (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	Bl L (Conf.)	Akras et al. (2019)	PN Bl L (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	Sa-3-86 (Conf.)

Position

Right ascension (°)	268.3074^Ref	Parallax (mas)	-0.045±0.056^Ref	Reddening E(B-V) (mag)	0.97±0.05^Ref ^{, Note}
Declination (°)	-30.3016^Ref	Distance (kpc)	16^Ref 9.87^Ref ^{, Note}, 8.55^Ref ^{, Note}
Galactic longitude (°)	359.6788^Ref	Proper motion in α (mas/yr)	-3.89±0.06^Ref
Galactic latitude (°)	-2.1204^Ref	Proper motion in δ (mas/yr)	-7.61±0.04^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	No^Ref
X-Ray type	-	J (mag)	9.84^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	8.65^Ref	Outbursts	Yes^Ref
GALEX NUV (mag)	-	K (mag)	8.12^Ref	Outburst type	Z And^Ref
IUE	No^Ref	WISE W1 (mag)	7.60^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	7.67^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	7.04^Ref	IPmax (eV)	114^Ref
B (mag)	-	WISE W4 (mag)	5.94^Ref	[O III] lines	Yes^Ref
V (mag)	17.20^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	Yes^Ref
I (mag)	13.12^Ref	IRAS 60μm (Jy)	-	O VI lines	Yes^Ref
BP (mag)	16.63^Ref	IRAS 100μm (Jy)	-
G (mag)	14.82^Ref	AKARI S09 (Jy)	-
RP (mag)	13.37^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	720.6^Ref	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	M6.5 III^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	SR^Ref
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	86±1^Ref
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

SIMBAD CDS Portal

Notes

References

Allen, D. A., 1979, Obs, 99, 83, 1979Obs....99...83A
Allen, D. A., 1980, MNRAS, 192, 521, 1980MNRAS.192..521A
Gromadzki, M., Mikołajewska, J., Soszyński, I., 2013, AcA, 63, 4, 405, 2013AcA....63..405G
Soszyński, I., Udalski, A., Szymański, M. K. et al., 2013, AcA, 63, 1, 21, 2013AcA....63...21S
Stenholm, B., Acker, A., 1987, A&AS, 68, 51, 1987A&AS...68...51S

Last updated: April 18, 2022