Hen 2-275

CONFIRMED MILKY WAY

Constellation
Scorpius

Equatorial coordinates
α = 17 45 30.732
δ = -38 39 45.934

Galactic coordinates
l = 351.6655°
b = -5.0320°

Suspected	1987^Ref
Confirmed	1987^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

Hen 2-275	IRAS -	GSC2.4.2 S8CB055090	AAVSO 000-BJT-839
SIMBAD WRAY 16-304	Pan-STARRS -	SAO -	VSX 241051
GAIA DR3 5961300498162820352	SkyMapper 174530.71-383946.0	WRAY 16-304	GCVS -
2MASS J17453074-3839456	HIP -	Hen 2-275	BD -
WISE J174530.73-383945.8	TYC -	ESO 334-8	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	Hen 2-275 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	Hen 2-275 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	VDS 96 (Susp.)

Position

Right ascension (°)	266.3781^Ref	Parallax (mas)	0.046±0.026^Ref	Reddening E(B-V) (mag)	0.61±0.03^Ref ^{, Note}
Declination (°)	-38.6628^Ref	Distance (kpc)	8.5^Ref 9.23^Ref ^{, Note}, 7.54^Ref ^{, Note}
Galactic longitude (°)	351.6655^Ref	Proper motion in α (mas/yr)	-2.00±0.02^Ref
Galactic latitude (°)	-5.0320^Ref	Proper motion in δ (mas/yr)	-8.01±0.02^Ref

Observations

X-Ray	-	IR type	S^Ref	Radio	-
X-Ray type	-	J (mag)	10.18^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	9.16^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	8.77^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	8.64^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	8.68^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	8.40^Ref	IPmax (eV)	114^Ref
B (mag)	-	WISE W4 (mag)	7.95^Ref	[O III] lines	No?^Ref
V (mag)	15.00^Ref	IRAS 12μm (Jy)	-	He II lines	Yes^Ref
R (mag)	14.67^Ref	IRAS 25μm (Jy)	-	[Fe VII] lines	No?^Ref
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	Yes^Ref
BP (mag)	15.37^Ref	IRAS 100μm (Jy)	-
G (mag)	13.66^Ref	AKARI S09 (Jy)	-
RP (mag)	12.39^Ref	AKARI S18 (Jy)	-

Orbit

Orbital period (days)	-	γ velocity (km/h)	70.59±6.70^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	M3^Ref	Mass (M_⊙)	-	Pulsation	-
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	-
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	-
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_⊙)	960^Ref
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

References

Mikołajewska, J., Acker, A., Stenholm, B., 1997, A&A, 327, 191, 1997A&A...327..191M
Stenholm, B., Acker, A., 1987, A&AS, 68, 51, 1987A&AS...68...51S

Last updated: November 5, 2019