Hen 2-127

CONFIRMED MILKY WAY

Constellation
Lupus

Equatorial coordinates
α = 15 24 49.775
δ = -51 49 52.648

Galactic coordinates
l = 325.5407°
b = 4.1774°

Suspected	1973^Ref
Confirmed	1973^Ref
Symbiotic IR type	D^Ref
Hot component type	shell-burning^Ref
Outbursts	-

Identifiers

Hen 2-127	IRAS 15210-5139	GSC2.4.2 S8SV038789	AAVSO -
SIMBAD WRAY 16-180	Pan-STARRS -	SAO -	VSX 58742
GAIA DR3 5889726659221998592	SkyMapper 152449.79-514952.6	WRAY 16-180	GCVS -
2MASS J15244978-5149526	HIP -	Hen 2-127	BD -
WISE J152449.78-514952.5	TYC -	ESO 224-2	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	He2-127 (Conf.)	Belzcyński et al. (2001)	Hen 2-127 (Conf.)
Gaposchkin (1957)	-	Kenyon (1986)	He2-127 (Conf.)	Akras et al. (2019)	Hen 2-127 (Conf.)
Boyarchuk (1969)	-	Vaidis (1988, 1991)	M-48 (Conf.)

Position

Right ascension (°)	231.2074^Ref	Parallax (mas)	0.100±0.098^Ref	Reddening E(B-V) (mag)	0.76±0.03^Ref ^{, Note}
Declination (°)	-51.8313^Ref	Distance (kpc)	5.80^Ref ^{, Note}, 5.63^Ref ^{, Note}
Galactic longitude (°)	325.5407^Ref	Proper motion in α (mas/yr)	-6.58±0.08^Ref
Galactic latitude (°)	4.1774^Ref	Proper motion in δ (mas/yr)	-3.74±0.09^Ref

Observations

X-Ray	No^Ref	IR type	D^Ref	Radio	Yes^Ref
X-Ray type	-	J (mag)	10.59^Ref	Flickering	-
GALEX FUV (mag)	-	H (mag)	9.43^Ref	Outbursts	-
GALEX NUV (mag)	-	K (mag)	8.53^Ref	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	6.92^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	6.44^Ref	Resolved nebula	No^Ref
U (mag)	-	WISE W3 (mag)	5.26^Ref	IPmax (eV)	114^Ref
B (mag)	-	WISE W4 (mag)	3.98^Ref	[O III] lines	Yes^Ref
V (mag)	15.00^Ref	IRAS 12μm (Jy)	0.49^Ref	He II lines	Yes^Ref
R (mag)	-	IRAS 25μm (Jy)	0.29^Ref	[Fe VII] lines	Yes^Ref
I (mag)	-	IRAS 60μm (Jy)	0.70^Ref	O VI lines	Yes^Ref
BP (mag)	15.65^Ref	IRAS 100μm (Jy)	9.19^Ref
G (mag)	14.50^Ref	AKARI S09 (Jy)	0.36^Ref
RP (mag)	13.25^Ref	AKARI S18 (Jy)	0.33^Ref

Orbit

Orbital period (days)	-	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	M5 III^Ref	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	Mira^Ref
IR type	D^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_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal

Notes

References

Allen, D. A., 1978, MNRAS, 184, 601, 1978MNRAS.184..601A
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
Whitelock, P. A., 1987, PASP, 99, 573, 1987PASP...99..573W

Last updated: April 15, 2022