Hen 2-179

Constellation
Ara

Equatorial coordinates
α = 16 43 16.364
δ = -46 00 42.473

Galactic coordinates
l = 338.9976°
b = -0.0085°

Suspected	1974^Ref
Re-classified	2003^Ref
Type	emission-line star^Ref

Identifiers

Hen 2-179	IRAS 16396-4555	GSC2.4.2 S8UV040544	AAVSO -
SIMBAD WRAY 16-232	Pan-STARRS -	SAO -	VSX 357403
GAIA DR3 5943135780115239680	SkyMapper 164316.36-460042.4	WRAY 16-232	GCVS -
2MASS J16431636-4600424	HIP -	Hen 2-179	BD -
WISE -	TYC -	ESO 277-7	HD -

Symbiotic Catalogs

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

Position

Right ascension (°)	250.8182^Ref	Parallax (mas)	0.476±0.096^Ref	Reddening E(B-V) (mag)	19.5±3.29^Ref ^{, Note}
Declination (°)	-46.0118^Ref	Distance (kpc)	2.44^Ref ^{, Note}, 2.02^Ref ^{, Note}
Galactic longitude (°)	338.9976^Ref	Proper motion in α (mas/yr)	-4.23±0.13^Ref
Galactic latitude (°)	-0.0085^Ref	Proper motion in δ (mas/yr)	-4.12±0.10^Ref

Links

SIMBAD CDS Portal

Notes

The object, previously considered as a southern planetary nebula, displays a continuum similar to symbiotic and VV Cep stars, as indicated by infrared photometry (Allen & Glass, 1974). Classified as an emission-line star by Stenholm & Acker (1987), the system's spectrum from Pereira et al. (2003) further confirms the presence of Hα emission line.

References

Allen, D. A., Glass, I. S., 1974, MNRAS, 167, 337, 1974MNRAS.167..337A
Pereira, C. B., Franco, C. S., de Araújo, F. X., 2003, A&A, 397, 927, 2003A&A...397..927P
Stenholm, B., Acker, A., 1987, A&AS, 68, 51, 1987A&AS...68...51S