SS73 123

Constellation
Sagittarius

Equatorial coordinates
α = 18 04 46.097
δ = -21 51 27.187

Galactic coordinates
l = 8.2911°
b = -0.1558°

Suspected	1988^Ref
Re-classified	1981^Ref
Type	Wolf-Rayet star^Ref

Identifiers

SS73 123	IRAS -	GSC2.4.2 SA68030519	AAVSO 000-BLQ-379
SIMBAD SS73 123	Pan-STARRS 81772711920411273	SAO -	VSX 48766
GAIA DR3 4069911426323829888	SkyMapper -	WRAY -	GCVS V5976 Sgr
2MASS J18044609-2151271	HIP -	Hen -	BD -
WISE J180446.09-215127.1	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	-
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	-
Boyarchuk (1969)	-	Vaidis (1988, 1991)	NSV 10142 (Susp.)

Position

Right ascension (°)	271.1921^Ref	Parallax (mas)	0.540±0.090^Ref	Reddening E(B-V) (mag)	21.23±2.44^Ref ^{, Note}
Declination (°)	-21.8576^Ref	Distance (kpc)	2.12^Ref ^{, Note}, 1.80^Ref ^{, Note}
Galactic longitude (°)	8.2911^Ref	Proper motion in α (mas/yr)	-0.91±0.09^Ref
Galactic latitude (°)	-0.1558^Ref	Proper motion in δ (mas/yr)	-0.72±0.07^Ref

Links

SIMBAD CDS Portal

Notes

Originally listed as a possible symbiotic star in Vaidis (1988). Its Be pec type spectrum with remarkably strong He I lines (5876 and 6678) compared to Hα was reported by Sanduleak & Stephenson (1973). It was also included in the catalogue of galactic Wolf-Rayet stars (van der Hucht et al., 1981) based on spectroscopic observations. The parameters of this system were further studied by Hamann et al. (2019).

References

Hamann, W.-R., Gräfener, G., Liermann, A. et al., 2019, A&A, 625, A57, 2019A&A...625A..57H
Sanduleak, N., Stephenson, C. B., 1973, ApJ, 185, 899, 1973ApJ...185..899S
Vaidis, J.-P., 1988, BAFOE, 45, 13, 1988BAFOE..45...13V
van der Hucht, K. A., Conti, P. S., Lundstrom, I. et al., 1981, SSRv, 28, 3, 227, 1981SSRv...28..227V