New Online Database of Symbiotic Variables: V1261 Ori

Constellation
Orion

Equatorial coordinates
α = 05 22 18.696
δ = -08 39 58.099

Galactic coordinates
l = 210.6272°
b = -23.7221°

Suspected	1991^Ref
Confirmed	1996^Ref
Symbiotic IR type	S^Ref
Hot component type	accreting-only^Ref
Outbursts	-

Identifiers

V1261 Ori	IRAS 05199-0842	GSC2.4.2 S1QK037702	AAVSO 000-BCW-618
SIMBAD V* V1261 Ori	Pan-STARRS 97600805776980691	SAO 32035	VSX 24324
GAIA DR3 3014902188065355264	SkyMapper 052218.68-083957.7	WRAY -	GCVS V1261 Ori
2MASS J05221863-0839581	HIP 25092	Hen -	BD -08 1099
WISE J052218.67-083958.0	TYC 5332-1598-1	ESO -	HD 35155

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	V1261 Ori (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	V1261 Ori (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	80.5779^Ref	Parallax (mas)	2.617±0.125^Ref	Reddening E(B-V) (mag)	0.17±0.0^Ref ^{, Note}
Declination (°)	-8.6661^Ref	Distance (kpc)	0.38^Ref ^{, Note}, 0.38^Ref ^{, Note}
Galactic longitude (°)	210.6272^Ref	Proper motion in α (mas/yr)	47.14±0.12^Ref
Galactic latitude (°)	-23.7221^Ref	Proper motion in δ (mas/yr)	-4.17±0.10^Ref

Observations

X-Ray	Yes^Ref	IR type	S^Ref	Radio	No^Ref
X-Ray type	δ^Ref	J (mag)	3.34^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	2.42^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	2.14^Ref	Outburst type	-
IUE	Yes^Ref	WISE W1 (mag)	-0.09^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	0.52^Ref	Resolved nebula	-
U (mag)	10.28^Ref	WISE W3 (mag)	1.85^Ref	IPmax (eV)	77.5 (UV)^Ref
B (mag)	8.43^Ref	WISE W4 (mag)	1.72^Ref	[O III] lines	No^Ref
V (mag)	6.91^Ref	IRAS 12μm (Jy)	7.98^Ref	He II lines	No^Ref
R (mag)	-	IRAS 25μm (Jy)	2.01^Ref	[Fe VII] lines	No^Ref
I (mag)	-	IRAS 60μm (Jy)	0.41^Ref	O VI lines	No^Ref
BP (mag)	7.16^Ref	IRAS 100μm (Jy)	3.83^Ref
G (mag)	5.82^Ref	AKARI S09 (Jy)	10.45^Ref
RP (mag)	4.66^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	642^Ref, 638.24±0.28^Ref	γ velocity (km/h)	79.77±0.09^Ref, 76.25±1.74^Ref	Size of giant’s orbit (AU)	0.441794^Ref
Eccentricity	0.07±0.01^Ref	RV of giant (km/h)	7.91±0.12^Ref	Separation (AU)	-
Inclination (°)	-	Inferior conj. of giant (JD)	2453215	Mass function	0.032^Ref
Eclipses	Yes^Ref			Mass ratio	3^Ref
Orbital ephemeris	Min (V) = 2450176 + 642 x E^Ref

Cool component

Spectral type	S4.1^Ref	Mass (M_⊙)	1.65^Ref	Pulsation	-
Eff. temperature (K)	3470±60^Ref, 3637^Ref	Radius (R_⊙)	123^Ref	Type	-
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	-
Metallicity [Fe/H]	-0.53±0.35^Ref			Pulsation ephemeris	-

Hot component

Type/Spectral type	WD^Ref	Mass (M_⊙)	0.55^Ref	Spin period (min)	-
Shell-burning/Accreting-only	accreting-only^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal ARAS Database

Notes

The cool component is identified as an S4.1 giant (Keenan, 1954; Jorissen et al., 1996). The UV spectrum reveals emission lines with ionization potential up to 77.5 eV (Ake et al., 1991) who noted the system to be interacting. It is classified as an eclipsing symbiotic star (Jorissen et al., 1992). Additionally, X-ray emission from the system was detected by Jorissen et al. (1996).

References

Ake, T. B., Johnson, H. R., Ameen, M. M., 1991, ApJ, 383, 842, 1991ApJ...383..842A
Boffin, H. M. J., Hillen, M., Berger, J. P. et al., 2014, A&A, 564, A1, 2014A&A...564A...1B
Jorissen, A., Mayor, M., Manfroid, J. et al., 1992, IBVS, 3730, 1, 1992IBVS.3730....1J
Jorissen, A., Schmitt, J. H. M. M., Carquillat, J. M. et al., 1996, A&A, 306, 467, 1996A&A...306..467J
Keenan, P. C., 1954, ApJ, 120, 484, 1954ApJ...120..484K
Merc, J., Gális, R., Wolf, M., 2019, AN, 340, 7, 598, 2019AN....340..598M
Sharma, K., Prugniel, P., Singh, H. P., 2016, A&A, 585, A64, 2016A&A...585A..64S
Vanture, A. D., Wallerstein, G., Gallino, R. et al., 2003, ApJ, 587, 1, 384, 2003ApJ...587..384V

V1261 Ori