SY Mus

Constellation
Musca

Equatorial coordinates
α = 11 32 10.002
δ = -65 25 11.425

Galactic coordinates
l = 294.8067°
b = -3.8063°

Suspected	1952^Ref
Confirmed	1952^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

SY Mus	IRAS 11299-6508	GSC2.4.2 S49B000160	AAVSO 000-BCW-457
SIMBAD V* SY Mus	Pan-STARRS -	SAO -	VSX 19701
GAIA DR3 5237239075896985728	SkyMapper 113210.02-652511.4	WRAY 15-824	GCVS SY Mus
2MASS J11320998-6525114	HIP -	Hen 3-667	BD -
WISE J113210.00-652511.3	TYC 8980-154-1	ESO -	HD 100336

Symbiotic Catalogs

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

Position

Right ascension (°)	173.0417^Ref	Parallax (mas)	0.558±0.025^Ref	Reddening E(B-V) (mag)	0.96±0.08^Ref ^{, Note}
Declination (°)	-65.4198^Ref	Distance (kpc)	1.3^Ref, 0.85±0.13^Ref, 1±0.15^Ref, 1.5±0.3^Ref 1.72^Ref ^{, Note}, 1.67^Ref ^{, Note}
Galactic longitude (°)	294.8067^Ref	Proper motion in α (mas/yr)	2.59±0.03^Ref
Galactic latitude (°)	-3.8063^Ref	Proper motion in δ (mas/yr)	2.08±0.03^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	Yes^Ref
X-Ray type	-	J (mag)	5.92^Ref	Flickering	No^Ref
GALEX FUV (mag)	-	H (mag)	4.99^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	4.59^Ref	Outburst type	-
IUE	Yes^Ref	WISE W1 (mag)	4.48^Ref	Jets	-
FUSE	Yes^Ref	WISE W2 (mag)	4.26^Ref	Resolved nebula	No^Ref
U (mag)	-	WISE W3 (mag)	4.27^Ref	IPmax (eV)	114^Ref
B (mag)	12.03^Ref	WISE W4 (mag)	3.80^Ref	[O III] lines	No^Ref
V (mag)	10.80^Ref	IRAS 12μm (Jy)	0.94^Ref	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	0.43^Ref	[Fe VII] lines	Yes^Ref
I (mag)	-	IRAS 60μm (Jy)	0.93^Ref	O VI lines	Yes^Ref
BP (mag)	11.11^Ref	IRAS 100μm (Jy)	10.40^Ref
G (mag)	9.37^Ref	AKARI S09 (Jy)	1.06^Ref
RP (mag)	8.10^Ref	AKARI S18 (Jy)	0.32^Ref

Orbit

Orbital period (days)	627±1.2^Ref, 624.5^Ref, 624.5±0.3^Ref, 625.0^Ref, 624.36±0.8^Ref	γ velocity (km/h)	12.9±0.1^Ref, 13.706±0.092^Ref, 15.87±10.1^Ref	Size of giant’s orbit (AU)	0.45^Ref
Eccentricity	0±nan^Ref	RV of giant (km/h)	7.7±0.2^Ref, 7.76±0.14^Ref	Separation (AU)	1.72^Ref
Inclination (°)	95.8±1.7^Ref, 84^Ref	Inferior conj. of giant (JD)	2451580.5	Mass function	0.026^Ref, 0.0302^Ref
Eclipses	Yes^Ref			Mass ratio	3.0^Ref, 2.4^Ref
Orbital ephemeris	Min (V) = 2435175.7±15.7 + 627±1.2 x E^Ref, Min (V) = 2448922.9±2.5 + 624.5±0.3 x E^Ref

Cool component

Spectral type	M4.5 III^Ref, M4.5 III^Ref	Mass (M_⊙)	1.3±0.25^Ref, 1.11^Ref	Pulsation	Yes^Ref
Eff. temperature (K)	3490±70^Ref, 3355±75^Ref, 3400^Ref	Radius (R_⊙)	60^Ref, 86±13^Ref, 131.22^Ref	Type	-
IR type	S^Ref	Luminosity (L_⊙)	600^Ref, 990±400^Ref, 850±250^Ref, 1556±760^Ref	Pulsation period (days)	56±1^Ref
Metallicity [Fe/H]	-0.08±0.06^Ref, -0.15±0.08^Ref			Pulsation ephemeris	-

Hot component

Type/Spectral type	-	Mass (M_⊙)	0.43±0.05^Ref, 0.46^Ref	Spin period (min)	-
Shell-burning/Accreting-only	shell-burning^Ref	Radius (R_⊙)	0.08^Ref, 0.12^Ref, 0.10^Ref	Accretion disk	-
Eff. temperature (K)	100000^Ref, 120000±10000^Ref, 110000^Ref, 105000^Ref	Luminosity (L_⊙)	530^Ref, 700^Ref, 1600^Ref
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., 1984, PASA, 5, 3, 369, 1984PASA....5..369A
Dumm, T., Schmutz, W., Schild, H. et al., 1999, A&A, 349, 169, 1999A&A...349..169D
Fekel, F. C., Hinkle, K. H., Joyce, R. R. et al., 2017, AJ, 153, 1, 35, 2017AJ....153...35F
Gromadzki, M., Mikołajewska, J., Soszyński, I., 2013, AcA, 63, 4, 405, 2013AcA....63..405G
Harries, T. J., Howarth, I. D., 1996, A&A, 310, 235, 1996A&A...310..235H
Henize, K. G., 1952, ApJ, 115, 133, 1952ApJ...115..133H
Kenyon, S. J., Bateson, F. M., 1984, PASP, 96, 321, 1984PASP...96..321K
Kenyon, S. J., Michalitsianos, A. G., Lutz, J. H. et al., 1985, PASP, 97, 268, 1985PASP...97..268K
Leśniewska, A., Otulakowska-Hypka, M., Mikołajewska, J. et al., 2018, XXXVIII Polish Astronomical Society Meeting, 7, 207, 2018pas7.conf..207L
Luna, G. J. M., Sokoloski, J. L., Mukai, K. et al., 2013, A&A, 559, A6, 2013A&A...559A...6L
Michalitsianos, A. G., Kafatos, M., Feibelman, W. A. et al., 1982, A&A, 109, 136, 1982A&A...109..136M
Mikołajewska, J., Gałan, C., Hinkle, K. H. et al., 2014, MNRAS, 440, 4, 3016, 2014MNRAS.440.3016M
Mürset, U., Nussbaumer, H., Schmid, H. M. et al., 1991, A&A, 248, 458, 1991A&A...248..458M
Mürset, U., Schmid, H. M., 1999, A&AS, 137, 473, 1999A&AS..137..473M
Pereira, C. B., Vogel, M., Nussbaumer, H., 1995, A&A, 293, 783, 1995A&A...293..783P
Schmutz, W., Schild, H., Mürset, U. et al., 1994, A&A, 288, 819, 1994A&A...288..819S
Shagatova, N., Skopal, A., 2017, A&A, 602, A71, 2017A&A...602A..71S
Skopal, A., 2005, A&A, 440, 3, 995, 2005A&A...440..995S
Walker, A. R., 1977, MNRAS, 179, 587, 1977MNRAS.179..587W

SY Mus

Identifiers

Symbiotic Catalogs

Position

Observations

Orbit

Cool component

Hot component

Links

Notes

References

Last updated: April 30, 2022